''Eurycaraspis incilis'' is an extinct petalichthid placoderm from the Middle

Devonian The Devonian ( ) is a geologic period and system of the Paleozoic era, spanning 60.3 million years from the end of the Silurian, million years ago (Mya), to the beginning of the Carboniferous, Mya. It is named after Devon, England, w ...

of China. 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 Chin ...

''.

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 Quasipetalichthyidae is a family of primitive petalichthyid placoderms from Givetian-aged marine strata of Yunnan, China, and possibly Vietnam Vietnam or Viet Nam ( vi, Việt Nam, ), officially the Socialist Republic of Vietnam,., group ...

, in turn, is considered the sister group of Macropetalichthyidae.

References

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