అంతరించిపోయిన చేప వంటి ఉద్యోగాల సకశేరుకాలు భారీ సాయుధ శరీరం; Paleozik.,

ostracoderms's Usage Examples:

the phylum Chordata, subphylum Vertebrata, consisting of both present (cyclostomes) and extinct (conodonts and ostracoderms) species.

"Dentine canals in Cambro-Ordovician ostracoderms and Cretaceous-Eocene pycnodont fish".

bony elements or without, most notably the conodonts, placoderms, and ostracoderms.

come to be home to creatures like brachiopods, cephalopods, corals, and ostracoderms.

Like other ostracoderms, Ateleaspis had a head shield.

those days, placoderms were thought to be shelled jawless fish akin to ostracoderms.

Like other ostracoderms, Ateleaspis had a head shield similar to that of Cephalaspis.

that would come to be home to creatures like brachiopods, conodonts, ostracoderms, sharks and trilobites.

("Bony Shells") is an extinct taxon of bony-armored jawless fish, termed "ostracoderms", that lived in what is now North America, Europe and Russia from the.

jawless fish called the conodonts, and small mostly armoured fish known as ostracoderms, first appeared.

Paleozoic era and would come to be inhabited by creatures like brachiopods, ostracoderms, and trilobites.

sea that would end up being home to creatures like brachiopods, corals, crinoids, ostracoderms, and trilobites.

make a close relationship among the "ostracoderms" unlikely, this has muddied the issue of the Hyperoartia"s closest relatives.