placoderm वाक्य
उदाहरण वाक्य
मोबाइल
- They were smaller than most placoderms, usually under 20 centimetres.
- A significant proportion of Michigan's Devonian fish were placoderms.
- The placoderm, then, was probably red above and silver below.
- Unlike other flattened placoderms, the phyllolepids were inhabitants of freshwater environments.
- The Xiaoxiang fauna also includes galeaspids, placoderms and acanthodians.
- Placoderms, scaled or naked, depending on the species.
- This allowed placoderms to lift their heads, unlike ostracoderms.
- The remains of both antiarch and arthrodire placoderms are known from the formation.
- The earliest known fish with jaws are the now extinct placoderms and spiny sharks.
- The placoderm claspers are not cartilaginous fishes.
- 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.
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