Sentences with phrase «larger placoderm»
At the same time, larger placoderm fossils, indicating mature fish, were not found.
https://www.sciencedaily.com/ Not exact matches
This backs up a 2013 study that showed that several traits thought to be unique to bony fish, such as the presence of large platelike bones, were in fact present in placoderms, an extinct group of jawed fish related to the ancestor of both cartilaginous and bony fish.
Dunkleosteus grew up to 33 feet long and was the largest of a group of armor - plated predatory fish, the placoderms.
«We are quite sure that the juvenile - only placoderm assemblage is not the result of sorting of small material by water currents because there are larger skeletal elements of other kinds of fish.
The top ocean predator of the time, its prey could have included early sharks, large nautiluslike mollusks, arthropods and other placoderms, Westneat says.