#paleogenetics — Public Fediverse posts

I would prefer you are interested in the topic, and that you show interest in it before asking. But I am passionate, so why not.

I put the #paleogenetics tag just so as an expert in the field corrects me in case my memory is wrong. I study paleology as an amateur.

I used LLMs for some of my notes, and some deepening
LLMs are not so bad are indicating a few stuffs in paleology. In general I keep on the standard student level kind of things: less chance of hallucinations. But knowledge has to be fed with other source of knowledge, like in any learning technique. (Human learning)

1. I would say at the time of Ediacaran ("just" before Cambrian complex-life explosion) First animals with a mouth & an anus: worms. Maybe even a predecessor based on bi-lateral symmetry. From memory there are two types of worms. The differenciation happens at foetus stage. IIRC one sort has the mouth appearing first, the other has the anus appearing first. The distinction is super deep as one of those kinds becomes arthropods and other became reptiles and mamals, and much probably also fish and amphibians (they came before). So probably my memory is wrong and it is the difference between vertebrate and invertebrate

Do you really need 5 paragraphs?
I think you dont care
Just like you dont care about serious subjects

But for my personnal knowledge strengthening, correction is super welcome
#paleology #edacarian

Because, I dont know if I can count protists into the realm of animals

Personnaly I think so

In which case it will be super difficult for me to tell you about how those tiny animals throw away waste after digestion

I would bet in the protist/protozoa realm, that they have tried everything

#paleogenetics #edacarian #paleology

Steph. Luis Rolland-Brabant ⁂ @[email protected] · 2026-08-19 · 23:59 UTC

I would prefer you are interested in the topic, and that you show interest in it before asking. But I am passionate, so why not.

I put the #paleogenetics tag just so as an expert in the field corrects me in case my memory is wrong. I study paleology as an amateur.

I used LLMs for some of my notes, and some deepening
LLMs are not so bad are indicating a few stuffs in paleology. In general I keep on the standard student level kind of things: less chance of hallucinations. But knowledge has to be fed with other source of knowledge, like in any learning technique. (Human learning)

1. I would say at the time of Ediacaran ("just" before Cambrian complex-life explosion) First animals with a mouth & an anus: worms. Maybe even a predecessor based on bi-lateral symmetry. From memory there are two types of worms. The differenciation happens at foetus stage. IIRC one sort has the mouth appearing first, the other has the anus appearing first. The distinction is super deep as one of those kinds becomes arthropods and other became reptiles and mamals, and much probably also fish and amphibians (they came before). So probably my memory is wrong and it is the difference between vertebrate and invertebrate

Do you really need 5 paragraphs?
I think you dont care
Just like you dont care about serious subjects

But for my personnal knowledge strengthening, correction is super welcome
#paleology #edacarian

Because, I dont know if I can count protists into the realm of animals

Personnaly I think so

In which case it will be super difficult for me to tell you about how those tiny animals throw away waste after digestion

I would bet in the protist/protozoa realm, that they have tried everything

#paleogenetics #edacarian #paleology

Steph. Luis Rolland-Brabant ⁂ @[email protected] · 2026-08-19 · 23:59 UTC

I would prefer you are interested in the topic, and that you show interest in it before asking. But I am passionate, so why not.

I put the #paleogenetics tag just so as an expert in the field corrects me in case my memory is wrong. I study paleology as an amateur.

I used LLMs for some of my notes, and some deepening
LLMs are not so bad are indicating a few stuffs in paleology. In general I keep on the standard student level kind of things: less chance of hallucinations. But knowledge has to be fed with other source of knowledge, like in any learning technique. (Human learning)

1. I would say at the time of Ediacaran ("just" before Cambrian complex-life explosion) First animals with a mouth & an anus: worms. Maybe even a predecessor based on bi-lateral symmetry. From memory there are two types of worms. The differenciation happens at foetus stage. IIRC one sort has the mouth appearing first, the other has the anus appearing first. The distinction is super deep as one of those kinds becomes arthropods and other became reptiles and mamals, and much probably also fish and amphibians (they came before). So probably my memory is wrong and it is the difference between vertebrate and invertebrate

Do you really need 5 paragraphs?
I think you dont care
Just like you dont care about serious subjects

But for my personnal knowledge strengthening, correction is super welcome
#paleology #edacarian

Because, I dont know if I can count protists into the realm of animals

Personnaly I think so

In which case it will be super difficult for me to tell you about how those tiny animals throw away waste after digestion

I would bet in the protist/protozoa realm, that they have tried everything

#paleology #edacarian #paleogenetics

Steph. Luis Rolland-Brabant ⁂ @[email protected] · 2026-08-19 · 23:59 UTC

I would prefer you are interested in the topic, and that you show interest in it before asking. But I am passionate, so why not.

I put the #paleogenetics tag just so as an expert in the field corrects me in case my memory is wrong. I study paleology as an amateur.

I used LLMs for some of my notes, and some deepening
LLMs are not so bad are indicating a few stuffs in paleology. In general I keep on the standard student level kind of things: less chance of hallucinations. But knowledge has to be fed with other source of knowledge, like in any learning technique. (Human learning)

1. I would say at the time of Ediacaran ("just" before Cambrian complex-life explosion) First animals with a mouth & an anus: worms. Maybe even a predecessor based on bi-lateral symmetry. From memory there are two types of worms. The differenciation happens at foetus stage. IIRC one sort has the mouth appearing first, the other has the anus appearing first. The distinction is super deep as one of those kinds becomes arthropods and other became reptiles and mamals, and much probably also fish and amphibians (they came before). So probably my memory is wrong and it is the difference between vertebrate and invertebrate

Do you really need 5 paragraphs?
I think you dont care
Just like you dont care about serious subjects

But for my personnal knowledge strengthening, correction is super welcome
#paleology #edacarian

Because, I dont know if I can count protists into the realm of animals

Personnaly I think so

In which case it will be super difficult for me to tell you about how those tiny animals throw away waste after digestion

I would bet in the protist/protozoa realm, that they have tried everything

#paleogenetics #edacarian #paleology

Anthropology.net @[email protected] · 2026-08-05 · 19:33 UTC

A single Neanderthal-inherited amino acid change makes growth hormone receptors fire harder, and people carrying it today have more muscle, shorter jaw ramus height, and shorter tooth roots. Neanderthal biology, still running. 🧬🦴🔬

https://www.anthropology.net/p/growth-hormone-faster-growth-and

#neanderthal #paleogenetics #humanevolution

Anthropology.net @[email protected] · 2026-08-05 · 19:33 UTC

A single Neanderthal-inherited amino acid change makes growth hormone receptors fire harder, and people carrying it today have more muscle, shorter jaw ramus height, and shorter tooth roots. Neanderthal biology, still running. 🧬🦴🔬

https://www.anthropology.net/p/growth-hormone-faster-growth-and

#neanderthal #paleogenetics #humanevolution

Anthropology.net @[email protected] · 2026-08-05 · 19:33 UTC

A single Neanderthal-inherited amino acid change makes growth hormone receptors fire harder, and people carrying it today have more muscle, shorter jaw ramus height, and shorter tooth roots. Neanderthal biology, still running. 🧬🦴🔬

https://www.anthropology.net/p/growth-hormone-faster-growth-and

#neanderthal #paleogenetics #humanevolution

Anthropology.net @[email protected] · 2026-08-05 · 19:33 UTC

A single Neanderthal-inherited amino acid change makes growth hormone receptors fire harder, and people carrying it today have more muscle, shorter jaw ramus height, and shorter tooth roots. Neanderthal biology, still running. 🧬🦴🔬

https://www.anthropology.net/p/growth-hormone-faster-growth-and

#humanevolution #paleogenetics #neanderthal

Anthropology.net @[email protected] · 2026-08-05 · 19:33 UTC

A single Neanderthal-inherited amino acid change makes growth hormone receptors fire harder, and people carrying it today have more muscle, shorter jaw ramus height, and shorter tooth roots. Neanderthal biology, still running. 🧬🦴🔬

https://www.anthropology.net/p/growth-hormone-faster-growth-and

#neanderthal #paleogenetics #humanevolution

Levka @[email protected] · 2026-07-04 · 20:22 UTC

https://www.johnhawks.net/p/the-ancient-mixture-in-cave-lion

"Cave lions mostly didn’t live in caves. They’re like their human contemporaries, the Neanderthals, that way. Just as Neanderthals were not truly cavemen, but nineteenth-century naturalists found them there, so too with the ancient European lions.

Cave lions are like Neanderthals in another way: They mixed with their African-derived relatives. New details about the pattern of mixture of cave lions and modern lions are coming from ancient genomes. David Stanton and coworkers in a new paper compiled twelve genomes from ancient lions across northeastern Siberia, Yukon, Central Asia, and Europe to better understand their diversity and connections with surviving populations of lions.

What they found was widespread evidence of interbreeding from modern lions into ancient cave lion populations."

#paleogenetics #cavelions

Levka @[email protected] · 2026-07-04 · 20:22 UTC

https://www.johnhawks.net/p/the-ancient-mixture-in-cave-lion

"Cave lions mostly didn’t live in caves. They’re like their human contemporaries, the Neanderthals, that way. Just as Neanderthals were not truly cavemen, but nineteenth-century naturalists found them there, so too with the ancient European lions.

Cave lions are like Neanderthals in another way: They mixed with their African-derived relatives. New details about the pattern of mixture of cave lions and modern lions are coming from ancient genomes. David Stanton and coworkers in a new paper compiled twelve genomes from ancient lions across northeastern Siberia, Yukon, Central Asia, and Europe to better understand their diversity and connections with surviving populations of lions.

What they found was widespread evidence of interbreeding from modern lions into ancient cave lion populations."

#paleogenetics #cavelions

Levka @[email protected] · 2026-07-04 · 20:22 UTC

https://www.johnhawks.net/p/the-ancient-mixture-in-cave-lion

"Cave lions mostly didn’t live in caves. They’re like their human contemporaries, the Neanderthals, that way. Just as Neanderthals were not truly cavemen, but nineteenth-century naturalists found them there, so too with the ancient European lions.

Cave lions are like Neanderthals in another way: They mixed with their African-derived relatives. New details about the pattern of mixture of cave lions and modern lions are coming from ancient genomes. David Stanton and coworkers in a new paper compiled twelve genomes from ancient lions across northeastern Siberia, Yukon, Central Asia, and Europe to better understand their diversity and connections with surviving populations of lions.

What they found was widespread evidence of interbreeding from modern lions into ancient cave lion populations."

#paleogenetics #cavelions

Levka @[email protected] · 2026-07-04 · 20:22 UTC