placoderm उदाहरण वाक्य

Much later, the exquisitely preserved placoderm fossils from Gogo reef changed the picture again.
Like other flattened placoderms, the phyllolepids were bottom-dwelling predators that ambushed prey.
The old placoderms did not have teeth at all, but had sharp bony plates in their mouth.
Newer research suggests that a branch of Placoderms was most likely the ancestor of present-day gnathostomes.
The first identifiable placoderms appear in the fossil record during the late Llandovery epoch of the early Silurian.

They showed that placoderms shared anatomical features not only with chondrichthyians but with other gnathostome groups as well.
As mentioned earlier, " Bothriolepis " is a genus placed within the placoderm order Antiarchi.
Placoderms were the first jawed fish; their jaws likely evolved from the first of their gill arches.
Before the event, oceans and lakes were dominated by lobe-finned fishes and armored fishes called placoderms.
"D . magnificus " is a large placoderm from the Frasnian Rhinestreet Shale of New York.