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Do fishes thought to have descended from ostracoderms?

yes


What would not an attribute of ostracoderms?

Ostracoderms were ancient fish with an an armor of bony plates. However, your question is very muddled and therefore we can not answer it properly.


What kind of prehistoric animals are ostracoderms?

They were jawless fish that lived during the Paleozoic era Stunningly some of our oldest ancestors came from ostracoderms!


What are ostracoderms?

Ostracoderms were a group of extinct jawless fishes that lived from the late Cambrian to the end of the Devonian period. They were characterized by their bony armor covering their bodies, lack of jaws, and typically, had a cartilaginous skeleton. Ostracoderms are considered to be among the earliest vertebrates.


The oldest vertebrate fossils are those of ------- with no jaws?

Agnatha, also known as jawless fish, are the oldest vertebrate fossils with no jaws. This group includes ancient species like the ostracoderms and the agnathan fish.


What are the comparison between ostracoderms and the placoderms?

They're both extinct bony fishes. The difference is that ostracoderms were jaw-less and placoderms had jaws.


Where did ostracoderms live?

Ostracoderms were a group of early jawless fish that lived in marine environments during the Paleozoic era. They were found in oceans worldwide, with fossil records indicating distribution in regions such as North America, Europe, and Australia.


Which class of fishes does a lamprey belong?

Lampreys are in the superclass Agnatha, jawless fish. They are of the class Cyclostomata, which includes hagfish, as opposed to the extinct Ostracoderms.


What is name for a genus of old red sandstone fish like creatures?

The genus of old red sandstone fish-like creatures is known as Ostracoderms. These ancient jawless fish lived during the Paleozoic era and are characterized by their bony outer covering.


Index fossils include ostracoderms?

Ordovician Period


What type of fish was the earliest to evolve?

lobe-finned fish


Are sea horse vertebrates or invertebrates?

Sea horses are vertebrates. They are fish and are descended from pipe fish.