''Eurycaraspis incilis'' is an extinct petalichthyid

placoderm Placoderms (from Ancient Greek πλάξ 'plax'', ''plakos'''Plate (animal anatomy), plate' and δέρμα 'derma'''skin') are vertebrate animals of the class (biology), class Placodermi, an extinct group of prehistoric fish known from Pal ...

from the Middle

Devonian The Devonian ( ) is a period (geology), geologic period and system (stratigraphy), system of the Paleozoic era (geology), era during the Phanerozoic eon (geology), eon, spanning 60.3 million years from the end of the preceding Silurian per ...

China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...

. It is closely related to ''

Quasipetalichthys ''Quasipetalichthys haikouensis'' is the type and only known species of the extinct petalichthid placoderm, ''Quasipetalichthys''. Fossil remains of ''Quasipetalichthys'' have been found in the Middle Devonian, Givetian faunal stage of China ...

''.

Anatomy

''Eurycaraspis incilis'' differs from ''Quasipetalichthys'' by having a more circular-shaped skull.

Phylogeny

''Eurycaraspis incilis'' is considered a basal petalichthyid, and is placed in Quasipetalichthyidae as ''Quasipetalichthys sister taxon. Quasipetalichthyidae, in turn, is considered the sister group of Macropetalichthyidae.

References

Fossil taxa described in 1991 Placoderms of Asia Petalichthyida Placoderm genera {{Placoderm-stub