Palaeontology is the study of organisms that lived in prehistoric times.

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The Perplexing Trilobite: What is the Evidence Supporting The Hypothesis That They are Not Crustaceans?

In the field of paleontology, one question that's really bugged me (er, no pun intended) of late is why the subphylum/class Trilobitomorpha/Trilobita is off on its own branch of the Arthropoda phylum, ...
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Extiction of non-mammal Synapsida

I am following M.J. Benton's Vertebrate Palaeontology, which explains how many groups of Synapsida were already extinct in the Mesozoic Era, with one obvious exception being the group of Cynodontia, ...
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What species of Cerapoda lived during the Jurassic?

So far, I've found eleven species of Cerapoda that lived during the Jurassic period. Are there any other known species that I've missed? The eleven that I've found out about are: Agilisaurus ...
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Why are the largest land/air animals today smaller than in the Mesozoic?

The largest dinosaurs and pterosaurs seem to have been much larger than the largest animal terrestrial/avian species since. Was the Mesozoic somehow more hospitable to large animal species than today'...
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How fast could a Deinonychus run?

My 4-year-old demands to know, and we couldn't find it stated anywhere on the Web. Thanks!
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What is the human species divergence time

How far back along the evolutionary tree do we have to go to find divergence to a completely different species to Hom. sapiens? I don't count Neanderthals because it seems that part of our genome ...
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did pteranodons live in colonies?

In one book I read that pteranodons lived in huge colonies. But pteranodon's family in "Dinosaur Train" ( https://en.wikipedia.org/wiki/Dinosaur_Train ) does not seem to be a part of any colony. So, ...