The film discusses the characteristics and classifications of chordates, a group of animals that includes vertebrates and some simpler forms. Key features of chordates include a pharyngeal breathing ...

Life began on Earth more than 3.5 billion years ago, but the history of humans and other vertebrates accounts for only a fraction of this timescale. Chordates (a group that includes vertebrates) and ...

The lack of any comprehensive and persuasive theory of vertebrate descent is noted. Recent findings are reviewed which appear to demonstrate that phylogenetic inferences cannot be predicated upon ...

The Middle Cambrian chordate known as Pikaia gracilens was once thought to be humanity’s earliest known ancestor, and the earliest known member of the phylum Chordata. Now, a new study flips this ...

A group of Japanese and American researchers found that the Ptychodera flava, a worm-like marine organism capable of regenerating its entire head or body, draws on reprogramming-based mechanisms that ...

The annelid--prot-arthropod ancestry of the vertebrates has recently been asserted on a Lamarckian basis. Lamarckism and modern Darwinism are here contrasted, and it is shown that the current ...

Tuna, salmon, mackerel. I’ve never looked at my afternoon sushi and wondered if it’s related to humans. So, I asked one of those friends named Thomas Siek. He’s a biological anthropologist at ...