Placoderms (from Greek πλάξ (plax, plakos) 'plate' and δέρμα (derma) 'skin') are members of the class Placodermi, a group of prehistoric fish known from...

This list of placoderms is an attempt to create a comprehensive listing of all genera from the fossil record that have ever been considered to be members...

Actinolepis is an extinct genus of actinolepid placoderm from the Early Devonian. Four species are known: A. magna from Estonia, A. spinosa from Latvia...

Dunkleosteus consists of ten species, some of which are among the largest placoderms ("plate-skinned") to have ever lived: D. terrelli, D. belgicus, D. denisoni...

lepis 'scale') was a widespread, abundant and diverse genus of antiarch placoderms that lived during the Middle to Late Devonian period of the Paleozoic...

thought to have lacked pectoral or pelvic fins. In addition to this, some placoderms (extinct fish with bony plates) were shown to have a third pair of paired...

record from the Silurian by two groups of fish: the armoured fish known as placoderms, which evolved from the ostracoderms; and the Acanthodii (or spiny sharks)...

characteristics are considered homologous characteristics derived from common placoderm ancestors[clarification needed], and present also in basal cartilaginous...

connection between the teeth and the original dermal scales. The old placoderms did not have teeth at all, but had sharp bony plates in their mouth. Thus...

including all living cartilaginous and bony fish, as well as the extinct placoderms and acanthodians. Most fish are cold-blooded, their body temperature varying...