Kale is a vegetable, a type of cabbage Brassica oleracea. The Brassica's are know for their odoriferous sulfur compounds and kale, being closer to the wild type has more than other cabbages.
The humorous post above, indicating the person does not like kale, has nothing to do with Cannabis.
I am very very likely completely wrong, but I would speculate birds - flying birds - survived, and rapidly lost their power of flight, because it was no longer needed, because their predators were all dead.
That is very likely to have happened in any area that really lost all or most ground predators. It is the reason that flightless birds evolved in New Zealand and islands around the world. Although flightless birds have evolved on continents as well, their distribution on islands is notable, a large fraction of all flightless species hale from predator-free islands.
My new Prius nags me if it thinks my hands aren't on the wheel - I discovered while creeping along in a straight line in nearly stopped traffic with my hands resting lightly on the wheel. Apparently it senses torque inputs (even very slight ones) from the driver to determine whether someone is holding it, and in the very slow traffic the fact that I hadn't needed to apply a steering input for awhile was flagged as "not holding the wheel" by the software.
Why didn't the Uber car have some similar sort of mechanism to detect a non-responsive "driver"? You know, checking to see if he was doing the job he was paid to do? Businesses are usually on that like Trump on a second scoop.
I think this is not true. My reason for thinking so is that I don't see any on sale on eBay. If these coins were for sale at the WH gift shop, someone would be buying a bunch and putting them up on eBay, striking while the iron is hot.
If it led to people actually dying in real life you bet they would.
Cryptocurrency frauds and thefts have actually taken billions of dollars from people's pockets.
A valid comparison to Grand Theft Auto would be the schemes for accumulating and manipulating currencies that only exist in videogames and are not convertible at all the real money.
A good comparison is the Linden Dollar in Second Life. No one regulates the Linden Dollar - but the Linden Dollar does not leave the game, and is not convertible to hard currency. There is a limited Linden Exchange in which players can buy and sell Linden Dollars from each other, exactly like trading cards.
But you will notice that "loot boxes" purchased with real world money are now being treated as regular gambling in many places.
Does this mean the US government is officially recognizing Bitcoin as a currency? A stock?
Or would is anything where there is "flooding the market with fake orders to trick other traders into buying/selling" a crime?
If someone did this with kids trading cards, or something like Pokeman, or Magic the Gathering cards- would that also incite an investigation with the government? Or- is it significant that they are investigating this as it means they now "Recognise" bitcoin?
If someone sought to use them as the basis of a form of currency, using the mere fact that they are limited in number to "collateralize" accounts worth hundreds of billions of dollars, and were used to as a tool to transfer large sums of money internationally, and also led to numerous fraud schemes stealing billions in aggregate - then you bet they would. It is simply recognizing what is actually being done.
Unregulated market trading has always attracted inventive new schemes to make money out of nothing. The difference is only that the Pokemon card scheme would never have gotten off the ground, it would not be esoteric enough to enlist devotees, and failed to have the novelty of the "mining" component wherein people could hope to profitably implement a limited production of said artifact themselves.
The only recognition here is that bitcoin is being used as an unregulated financial vehicle subject to fraud, abuse, and to facilitate crimes. The idea about bitcoin enthusiasts that "the Fed can't do anything about bitcoin, unless they recognized it as a valid currency" is pure self-delusion.
According to TFA, there are some FB employees who will be looking at a lot of naked pictures. A lot of naked pictures!
Speaking to the BBC, Antigone Davis, Facebook's Global Head of Safety, said that nudes would be reviewed by human employees, but that this was "a very small group of about five specially trained reviewers". Images would then be hashed, and originals would not be stored.
So I guess Zuckerberg is one of those "reviewers"? Probably he is not a "first reviewer", he only reviews the really good ones, "just to be sure".
And then FB will have hashes of all the really good naked bodies. I am sure some useful data mining can be done with that.
Whatever we find out about BZ509 tells us absolutely nothing about how the sun and planets formed.
We have lots of material to study that was formed in this solar system, and have obtained virgin, uncontaminated material from both asteroids and comets, with more samples and sample missions in the pipeline.
But aside from seven interstellar dust particles recovered in the Wild II mission we don't have anything from outside the solar system to compare our solar system samples with.
Being able to study material formed in other star systems is absolutely going to help us understand how our sun and planets formed.
Helluva a lot easier than trying to catch another Oumuamua which we will only detect near the Sun (i.e. shortly before exiting), and has a solar velocity excess of 26 km/s, or 2.6 times more kinetic energy than any rocket boosted object in human history (which was the New Horizons probe).
This one is staying here on a known orbit, gravitationally bound to the Sun. An ion drive or Hall Effect thruster is a good candidate for this mission as it can reach much high velocities than chemical rockets, and the long boost time is no handicap. These can achieve the necessary velocities with these to rendezvous with any object the is gravitationally bound to the Sun regardless of orbital inclination.
If we start considering dwarf planets as full planets, we'll have dozens to hundreds or maybe thousands in time -- never 13.
Not necessarily. Size matters. We don't call every island a continent.
But really, now that we know of 4500 planets and planet candidates, using ancient five plus three (Earth, Uranus and Neptune) as the guide for defining planets is ridiculous. We need a system of categorization that covers all planets everywhere.
Rotation is an accurate description of the motion when the wings tips fold. They rotate on a powered axis. Aircraft design terminology is not bound by the expectations of laymen.
0.01% of life by weight is currently humans, but we've killed 83% of mammal species... by species count? individuals?
Individuals. RTFA.
Says a guy who didn't read the actual paper and is guessing?
That percentage was calculated from this line in the actual (not made-up) report:
The Report: "Human activity contributed to the Quaternary Megafauna Extinction between 50,000 and
3,000 y ago, which claimed around half of the large (>40 kg)
land mammal species (30). The biomass of wild land mammals
before this period of extinction was estimated by Barnosky (30)
at 0.02 Gt C. The present-day biomass of wild land mammals is
approximately sevenfold lower, at 0.003 Gt C."
100*(1 - 0.003/0.02) = 85%, not exactly the 83% quoted but within the accuracy of the estimate.
what percentage of mammal species does humanity account for? by weight or by head count?
36%, by head count. RTFA.
The paper is entirely done with biomass estimates. Why are you BSing everyone?
Dark" side of the moon... actually gets slightly MORE light
Dark isn't always a synonym for "dim". On of the definitions of dark (and the version being used) not known or explored because of remoteness. For instance, did you think that the "deep, dark heart of the jungle" referred to an area we knew was in the shade?
Are you absolutely sure that references to the jungles of sub-Saharan Africa being "dark" were not references to the skin color of its inhabitants?
Explorer Henry Morton Stanley coined the phrase "Dark Continent" for Africa in his 1878 book Through the Dark Continent which is a chronicle of his journeys through a central Africa, which was already densely populated by Africans and well known to Arab traders. It was not well known to Europeans, but hardly unknown or unexplored generally.
But no one uses that phrase anymore. You can fly to the capital of any African nation, and arbitrarily detailed maps and travel guides are available to anyone, anywhere.
The far side of the Moon was unknown (and thus "dark" in Stanley's phrase, if he was in fact referring to Africa being unknown and not to its inhabitants) but after the Soviet Academy of Sciences published the first atlas of the far side in 1960 it can hardly be said to be unknown anymore.
Look Windy, renewables are becoming less and less of your new electricity...
2015 66%
2016 62%
2017 55%
2018 36%
No wonder your CO2 will rise this year.
Only because coal is steep decline, with natural gas picking up the slack (it produces about half the CO2 of coal, and much less of other pollutants). Actual renewable deployment is holding steady. It is fine if natural gas steps in to kill coal, the faster we get to coal zero the better.
That first link has this comment about that 1.5 trillion barrel projection: "However, the estimates of recoverable oil has been questioned by geophysicist Raymond T. Pierrehumbert, who argues that the technology for recovering oil from the Green River oil shale deposit has not been developed and has not been profitably implemented at any significant scale." So maybe not really available in such quantity?
And about that second link (which depends on speculative projections on price declines, reinforcing Pierrehumbert's point), we also see: "The water needed in the oil shale retorting process offers an additional economic consideration: this may pose a problem in areas with water scarcity."
I believe there is a significant amount of evidence that synaptic connections do store memories. This work shows evidence that RNA can also be involved in storing memories. It is not like it has to be one of the other. We know of a number of memory mechanisms (short term, long term, explicit, implicit, sensory, muscle, procedural, declarative, etc., etc.) it would not be at all surprising for there to be more than one way memory is stored for different purposes.
What Wickramasinghe et al has done with the octopus is a slightly more sophisticated version of a game that creationists play.
All this stuff about "camera-like eyes", advanced nervous systems, color-changing etc. being so, so different from the nautilus that it is probably "aliens", is similar to the incredulity creationists express to show that evolution is impossible. The key difference (and the one they emphasize heavily) is the evolution by RNA editing that cephaloids developed. That is unusual, and seems to have developed once and only in the lineage (as far as we know at present).
But they octopuses did not get "camera-like eyes", advanced nervous systems, color-changing from "aliens" -otherwise the cuttlefish would have them too. If anything they just got that RNA mechanism. All that other stuff they evolved on their own. The octopus had at least 130 million years to evolve those advanced traits after splitting off from nautiloids, and perhaps as much as 360 million!
Other researchers were not quick to embrace this theory. "There's no question, early biology is fascinating — but I think this, if anything, is counterproductive," Ken Stedman, a virologist and professor of biology at Portland State University, told Live Science. "Many of the claims in this paper are beyond speculative, and not even really looking at the literature."
For example, Stedman said, the octopus genome was mapped in 2015. While it indeed contained many surprises, one relevant finding was that octopus nervous system genes split from the squid's only around 135 million years ago — long after the Cambrian explosion.
Well, this is looks to be a problem for this hypothesis.
So I decided to look into this a bit more so I downloaded the paper (which was in "accepted manuscript form" not as published paper) and look up some of its references. A key one is cited in the paper as (Liscovitch-Brauer et al 2017), for which the actual citation reference does not exist in the manuscript. I did find the paper though: Cell. 2017 Apr 6;169(2):191-202.e11. doi: 10.1016/j.cell.2017.03.025, "Trade-off between Transcriptome Plasticity and Genome Evolution in Cephalopods"
It includes this helpful paragraph (without the Wickramasinghe mumbo-jumbo inserted in the discussion):
Cephalopods are diverse and can be divided into the behaviorally complex coleoids, consisting of squid, cuttlefish, and octopus, and the more primitive nautiloids. In this paper we show that in neural transcriptomes extensive A-to-I RNA editing is observed in the behaviorally complex coleoid cephalopods but not in nautilus. The edited transcripts are translated into protein isoforms with modified functional properties. By comparing
editing across coleoid taxa, we found that, unlike the case for mammals, many sites are highly conserved across the lineage and undergo positive selection, resulting in a sizable slow-down of coleoid genome evolution.
So the cephalopods are quite unusual, with a different approach to evolution starting with the cuttlefish (long before the octopus) with RNA editing taking precedence over DNA modification for evolution. This is very interesting.
The Liscovitch-Brauer paper also helpfully explains:
Cephalopods emerged in the late Cambrian period, roughly at 530 million years ago (mya), and the divergence of nautiloids from coleoides is estimated to have occurred at 350–480 mya. The coleoides diverged to Vampyropoda (octopus lineage) and the Decabrachia (squid and cuttlefish lineage) at 200–350 mya. Divergence of squid from Sepiida is estimated to have occurred at 120–220 mya.
So, a different approach to adapting to evolutionary pressure developed in the coleoides 350–480 mya (i.e. after splitting off from the nautoloids), which is 50-100 million years after the end of the Cambrian, and 60-110 million years after the Cambrian explosion (541 mya), and was in existence by the time that squid and octopus line separated (200-350 mya after the Cambrian explosion).
This is an enormous span of time, and no reason to suppose that alien genes imported at the Cambrian explosion started showing up in coleoides well over 100 million years later. Where were they hiding all that time?
The Wickramasinghe paper cites this anomalous biology of cephaloides, and then jumps to the conclusion "therefore aliens (maybe)".
They got their paper published, but I don't buy it.
Slashdot Mirror
Kale is a vegetable, a type of cabbage Brassica oleracea. The Brassica's are know for their odoriferous sulfur compounds and kale, being closer to the wild type has more than other cabbages.
The humorous post above, indicating the person does not like kale, has nothing to do with Cannabis.
I am very very likely completely wrong, but I would speculate birds - flying birds - survived, and rapidly lost their power of flight, because it was no longer needed, because their predators were all dead.
That is very likely to have happened in any area that really lost all or most ground predators. It is the reason that flightless birds evolved in New Zealand and islands around the world. Although flightless birds have evolved on continents as well, their distribution on islands is notable, a large fraction of all flightless species hale from predator-free islands.
My new Prius nags me if it thinks my hands aren't on the wheel - I discovered while creeping along in a straight line in nearly stopped traffic with my hands resting lightly on the wheel. Apparently it senses torque inputs (even very slight ones) from the driver to determine whether someone is holding it, and in the very slow traffic the fact that I hadn't needed to apply a steering input for awhile was flagged as "not holding the wheel" by the software.
Why didn't the Uber car have some similar sort of mechanism to detect a non-responsive "driver"? You know, checking to see if he was doing the job he was paid to do? Businesses are usually on that like Trump on a second scoop.
According to The Verge, Mix.com is "a curation platform that incorporates your social media presence".
I'm pretty sure I want nothing to do with that!
I read that StumbleUpon is shutting down! That's the first I've hear of them. Why isn't there a service to help discover useful new sites? Oh, wait...
I think this is not true. My reason for thinking so is that I don't see any on sale on eBay. If these coins were for sale at the WH gift shop, someone would be buying a bunch and putting them up on eBay, striking while the iron is hot.
If it led to people actually dying in real life you bet they would.
Cryptocurrency frauds and thefts have actually taken billions of dollars from people's pockets.
A valid comparison to Grand Theft Auto would be the schemes for accumulating and manipulating currencies that only exist in videogames and are not convertible at all the real money.
A good comparison is the Linden Dollar in Second Life. No one regulates the Linden Dollar - but the Linden Dollar does not leave the game, and is not convertible to hard currency. There is a limited Linden Exchange in which players can buy and sell Linden Dollars from each other, exactly like trading cards.
But you will notice that "loot boxes" purchased with real world money are now being treated as regular gambling in many places.
Does this mean the US government is officially recognizing Bitcoin as a currency? A stock?
Or would is anything where there is "flooding the market with fake orders to trick other traders into buying/selling" a crime?
If someone did this with kids trading cards, or something like Pokeman, or Magic the Gathering cards- would that also incite an investigation with the government? Or- is it significant that they are investigating this as it means they now "Recognise" bitcoin?
If someone sought to use them as the basis of a form of currency, using the mere fact that they are limited in number to "collateralize" accounts worth hundreds of billions of dollars, and were used to as a tool to transfer large sums of money internationally, and also led to numerous fraud schemes stealing billions in aggregate - then you bet they would. It is simply recognizing what is actually being done.
Unregulated market trading has always attracted inventive new schemes to make money out of nothing. The difference is only that the Pokemon card scheme would never have gotten off the ground, it would not be esoteric enough to enlist devotees, and failed to have the novelty of the "mining" component wherein people could hope to profitably implement a limited production of said artifact themselves.
The only recognition here is that bitcoin is being used as an unregulated financial vehicle subject to fraud, abuse, and to facilitate crimes. The idea about bitcoin enthusiasts that "the Fed can't do anything about bitcoin, unless they recognized it as a valid currency" is pure self-delusion.
According to TFA, there are some FB employees who will be looking at a lot of naked pictures. A lot of naked pictures!
Speaking to the BBC, Antigone Davis, Facebook's Global Head of Safety, said that nudes would be reviewed by human employees, but that this was "a very small group of about five specially trained reviewers". Images would then be hashed, and originals would not be stored.
So I guess Zuckerberg is one of those "reviewers"? Probably he is not a "first reviewer", he only reviews the really good ones, "just to be sure".
And then FB will have hashes of all the really good naked bodies. I am sure some useful data mining can be done with that.
Yep. We know.
He hates who you hate. That's the way to make America great.
Whatever we find out about BZ509 tells us absolutely nothing about how the sun and planets formed.
We have lots of material to study that was formed in this solar system, and have obtained virgin, uncontaminated material from both asteroids and comets, with more samples and sample missions in the pipeline.
But aside from seven interstellar dust particles recovered in the Wild II mission we don't have anything from outside the solar system to compare our solar system samples with.
Being able to study material formed in other star systems is absolutely going to help us understand how our sun and planets formed.
Helluva a lot easier than trying to catch another Oumuamua which we will only detect near the Sun (i.e. shortly before exiting), and has a solar velocity excess of 26 km/s, or 2.6 times more kinetic energy than any rocket boosted object in human history (which was the New Horizons probe).
This one is staying here on a known orbit, gravitationally bound to the Sun. An ion drive or Hall Effect thruster is a good candidate for this mission as it can reach much high velocities than chemical rockets, and the long boost time is no handicap. These can achieve the necessary velocities with these to rendezvous with any object the is gravitationally bound to the Sun regardless of orbital inclination.
Correct... but I wonder if they may be useful for in-orbit maneuvering...
It wasn't the drive unit producing the thrust. It was the cable along the torsion arm carrying current. The EmDrive had nothing to do with it.
Yes, it is possible to use current loops with satellites to interact with Earth's magnetic field, but ordinary electrical engineering is what you need to call upon. Not a Quantum Vacuum Plasma Thruster (QVPT) as this paper chooses to call it (with zero evidence that the effect, if real, is "quantum" or "quantum vacuum" or "plasma" related).
It was presented at the Space Propulsion 2018 conference.
If we start considering dwarf planets as full planets, we'll have dozens to hundreds or maybe thousands in time -- never 13.
Not necessarily. Size matters. We don't call every island a continent.
But really, now that we know of 4500 planets and planet candidates, using ancient five plus three (Earth, Uranus and Neptune) as the guide for defining planets is ridiculous. We need a system of categorization that covers all planets everywhere.
Let's not get too carried away, it's not something to get upset about, unlike say Vi vs Emacs.
Let's get to the really tough, divisive issue: spaces or tabs?
History is made in the dark.
Rotation is an accurate description of the motion when the wings tips fold. They rotate on a powered axis. Aircraft design terminology is not bound by the expectations of laymen.
0.01% of life by weight is currently humans, but we've killed 83% of mammal species... by species count? individuals?
Individuals. RTFA.
Says a guy who didn't read the actual paper and is guessing?
That percentage was calculated from this line in the actual (not made-up) report:
The Report:
"Human activity contributed to the Quaternary Megafauna Extinction between 50,000 and 3,000 y ago, which claimed around half of the large (>40 kg) land mammal species (30). The biomass of wild land mammals before this period of extinction was estimated by Barnosky (30) at 0.02 Gt C. The present-day biomass of wild land mammals is approximately sevenfold lower, at 0.003 Gt C."
100*(1 - 0.003/0.02) = 85%, not exactly the 83% quoted but within the accuracy of the estimate.
what percentage of mammal species does humanity account for? by weight or by head count?
36%, by head count. RTFA.
The paper is entirely done with biomass estimates. Why are you BSing everyone?
Dark isn't always a synonym for "dim". On of the definitions of dark (and the version being used) not known or explored because of remoteness. For instance, did you think that the "deep, dark heart of the jungle" referred to an area we knew was in the shade?
Are you absolutely sure that references to the jungles of sub-Saharan Africa being "dark" were not references to the skin color of its inhabitants?
Explorer Henry Morton Stanley coined the phrase "Dark Continent" for Africa in his 1878 book Through the Dark Continent which is a chronicle of his journeys through a central Africa, which was already densely populated by Africans and well known to Arab traders. It was not well known to Europeans, but hardly unknown or unexplored generally.
But no one uses that phrase anymore. You can fly to the capital of any African nation, and arbitrarily detailed maps and travel guides are available to anyone, anywhere.
The far side of the Moon was unknown (and thus "dark" in Stanley's phrase, if he was in fact referring to Africa being unknown and not to its inhabitants) but after the Soviet Academy of Sciences published the first atlas of the far side in 1960 it can hardly be said to be unknown anymore.
Look Windy, renewables are becoming less and less of your new electricity... 2015 66% 2016 62% 2017 55% 2018 36% No wonder your CO2 will rise this year.
Only because coal is steep decline, with natural gas picking up the slack (it produces about half the CO2 of coal, and much less of other pollutants). Actual renewable deployment is holding steady. It is fine if natural gas steps in to kill coal, the faster we get to coal zero the better.
Well, I do know that we have 1.5 trillion barrels of oil in the lower 48, and it is economically viable at today's oil prices.
That first link has this comment about that 1.5 trillion barrel projection: "However, the estimates of recoverable oil has been questioned by geophysicist Raymond T. Pierrehumbert, who argues that the technology for recovering oil from the Green River oil shale deposit has not been developed and has not been profitably implemented at any significant scale." So maybe not really available in such quantity?
And about that second link (which depends on speculative projections on price declines, reinforcing Pierrehumbert's point), we also see: "The water needed in the oil shale retorting process offers an additional economic consideration: this may pose a problem in areas with water scarcity."
Tell us where all that U.S. shale is again?
I believe there is a significant amount of evidence that synaptic connections do store memories. This work shows evidence that RNA can also be involved in storing memories. It is not like it has to be one of the other. We know of a number of memory mechanisms (short term, long term, explicit, implicit, sensory, muscle, procedural, declarative, etc., etc.) it would not be at all surprising for there to be more than one way memory is stored for different purposes.
Too bad I can't edit to add an addendum.
What Wickramasinghe et al has done with the octopus is a slightly more sophisticated version of a game that creationists play.
All this stuff about "camera-like eyes", advanced nervous systems, color-changing etc. being so, so different from the nautilus that it is probably "aliens", is similar to the incredulity creationists express to show that evolution is impossible. The key difference (and the one they emphasize heavily) is the evolution by RNA editing that cephaloids developed. That is unusual, and seems to have developed once and only in the lineage (as far as we know at present).
But they octopuses did not get "camera-like eyes", advanced nervous systems, color-changing from "aliens" -otherwise the cuttlefish would have them too. If anything they just got that RNA mechanism. All that other stuff they evolved on their own. The octopus had at least 130 million years to evolve those advanced traits after splitting off from nautiloids, and perhaps as much as 360 million!
From the linked LiveScience commentary:
Other researchers were not quick to embrace this theory. "There's no question, early biology is fascinating — but I think this, if anything, is counterproductive," Ken Stedman, a virologist and professor of biology at Portland State University, told Live Science. "Many of the claims in this paper are beyond speculative, and not even really looking at the literature."
For example, Stedman said, the octopus genome was mapped in 2015. While it indeed contained many surprises, one relevant finding was that octopus nervous system genes split from the squid's only around 135 million years ago — long after the Cambrian explosion.
Well, this is looks to be a problem for this hypothesis.
So I decided to look into this a bit more so I downloaded the paper (which was in "accepted manuscript form" not as published paper) and look up some of its references. A key one is cited in the paper as (Liscovitch-Brauer et al 2017), for which the actual citation reference does not exist in the manuscript. I did find the paper though: Cell. 2017 Apr 6;169(2):191-202.e11. doi: 10.1016/j.cell.2017.03.025, "Trade-off between Transcriptome Plasticity and Genome Evolution in Cephalopods"
It includes this helpful paragraph (without the Wickramasinghe mumbo-jumbo inserted in the discussion):
Cephalopods are diverse and can be divided into the behaviorally complex coleoids, consisting of squid, cuttlefish, and octopus, and the more primitive nautiloids. In this paper we show that in neural transcriptomes extensive A-to-I RNA editing is observed in the behaviorally complex coleoid cephalopods but not in nautilus. The edited transcripts are translated into protein isoforms with modified functional properties. By comparing editing across coleoid taxa, we found that, unlike the case for mammals, many sites are highly conserved across the lineage and undergo positive selection, resulting in a sizable slow-down of coleoid genome evolution.
So the cephalopods are quite unusual, with a different approach to evolution starting with the cuttlefish (long before the octopus) with RNA editing taking precedence over DNA modification for evolution. This is very interesting.
The Liscovitch-Brauer paper also helpfully explains:
Cephalopods emerged in the late Cambrian period, roughly at 530 million years ago (mya), and the divergence of nautiloids from coleoides is estimated to have occurred at 350–480 mya. The coleoides diverged to Vampyropoda (octopus lineage) and the Decabrachia (squid and cuttlefish lineage) at 200–350 mya. Divergence of squid from Sepiida is estimated to have occurred at 120–220 mya.
So, a different approach to adapting to evolutionary pressure developed in the coleoides 350–480 mya (i.e. after splitting off from the nautoloids), which is 50-100 million years after the end of the Cambrian, and 60-110 million years after the Cambrian explosion (541 mya), and was in existence by the time that squid and octopus line separated (200-350 mya after the Cambrian explosion).
This is an enormous span of time, and no reason to suppose that alien genes imported at the Cambrian explosion started showing up in coleoides well over 100 million years later. Where were they hiding all that time?
The Wickramasinghe paper cites this anomalous biology of cephaloides, and then jumps to the conclusion "therefore aliens (maybe)".
They got their paper published, but I don't buy it.