Tags » Tetrapods

New Evolution of Humans Video on YouTube

The origin of mammals from cynodonts is universally accepted.
The origin of humans from primates is universally accepted among paleontologists, not among religious conservatives. Perhaps… 261 more words


A Broken Bone and the Origins of Life on Land

Around 300 million years ago the very first vertebrates made their way from the seas onto the land. They weren’t the first animals to make the transition, insects had beaten them to it several million years before, but they were the first animals with a backbone to make the evolutionary leap and at least one of those species was also our ancestor. 871 more words



As I’ve said before no doubt, turtles have been one of my favorite animals since I was a youngster. When I saw this article over at the… 35 more words


Origin of tetrapods based on a broken bone

Bishop et al. (2015) claimed to push the date for the origin of terrestrial tetrapods back into the Carboniferous (333 mya) by two million years. This is an odd assertion when the… 262 more words

Reptile Family Tree

Notes on Limusaurus (Dinosauria, Theropoda) and its odd little hand

Limusaurus inextricabilis (Xu et al. 2009; earliest Late Jurassic, Oxfordian; 1.7m in est. length; IVPP V 15923; Figs. 1, 2) is an herbivorous theropod with very tiny arms and hands in the lineage of proto-birds. 727 more words

Reptile Family Tree

From fins to legs

That title reminds me of an old hardware store we use to have in St. Louis called Central Hardware. Their catch phrase wasfrom scoops to nuts… 39 more words


Nature, red in tooth and claw

“You’re trying to live without enemies. That’s all you think about, not having enemies.” Isaac Babel, Red Cavalry

“Enemies are the most important agencies of selection.” Geerat Vermeij, … 164 more words