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Post by dividavi on Sept 21, 2022 11:53:04 GMT
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Post by politicidal on Oct 6, 2022 16:01:40 GMT
"...The species, named Enhydriodon omoensis, lived about 3.5 million to 2.5 million years ago and co-existed with a group of extinct human relatives known as australopithecines, bipedal hominids that lived from 4.2 million to about 2 million years ago. E. omoensis was colossal compared with its cute contemporary counterparts, and the study authors estimated that it weighed more than 440 pounds (200 kilograms)."
Cool.
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Post by President Ackbar™ on Oct 6, 2022 16:28:12 GMT
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Post by Catman on Oct 6, 2022 17:05:09 GMT
They should make a TV sitcom about these guys.
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Post by Feologild Oakes on Oct 7, 2022 11:24:53 GMT
I could be wrong, but i think the reason why animals where a lot bigger millions of years ago, was because there was more oxygen in the atmosphere
Most likely i am wrong.
Did anybody ask ? No
Does that stop me from making this post ? No
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Post by President Ackbar™ on Oct 7, 2022 17:51:07 GMT
it was actually more carbon
with higher temperatures, animals can devote calories to growth, instead of body heat
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Post by dividavi on Oct 7, 2022 17:55:58 GMT
I could be wrong, but i think the reason why animals where a lot bigger millions of years ago, was because there was more oxygen in the atmosphere Most likely i am wrong. Did anybody ask ? No Does that stop me from making this post ? No According to this 2010 study you're correct for most, but not all, insects. Cockroaches and Dragonflies date back to the Carboniferous (300 MYA), a period with high levels of oxygen. The Carboniferous Dragonflies are the largest to have ever existed while present day Cockroaches exceed in size any fossils of their antecedents. Regarding the giant Ethiopian Otters, it appears that Oxygen levels of the Pliocene, 5.333 million to 2.58 million years ago, were about the same as today. Creatures got quite huge in the Pleistocene, 2,580,000 to 11,700 years ago, but that may be due to the facts that large animals retain heat better during an Ice Age and are more likely to have reasonably complete skeletons.
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