Diandongpetalichthys

Diandongpetalichthys
Temporal range: Lochkovian
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
Placodermi
Order:
Petalichthyida †
Genus:
Diandongpetalichthys
Species:
D. liaojiaoshanensis
Binomial name
Diandongpetalichthys liaojiaoshanensis
P'an & Wang, 1978

Diandongpetalichthys liaojiaoshanensis is an extinct petalichthyid placoderm from the Early Devonian of China.

Fossils

Several specimens, in the forms of one complete and several incomplete skull roofs, disarticulated portions of the trunk shield, and spines, are known, found in the Devonian aged Liaojiaoshan Hill of Qujing, Yunnan, a non-marine portion of the Xishancun Formation, in the Cuifengshan Group.[1]

Phylogeny

The holotype of D. liaojiaoshanensis is a poorly preserved, incomplete skull roof, and was, at the time of its description in 1978, regarded as "Petalichthyida incertae sedis. In light of more, better preserved specimens that show features in common with primitive arthrodires, such as actinolepids and the phlyctaeniids, D. liaojiaoshanensis is now regarded as a basal petalichthyid.[1][2]

References

  1. ^ a b Zhu, M. (1991). "New information on Diandongpetalichthys (Placodermi: Petalichthyida)". Early vertebrates and related problems of evolutionary biology. Beijing: Science Press. pp. 179–192. Retrieved 16 November 2021 – via ResearchGate.
  2. ^ Zhu, Min; Wang, Junqing (October 1996). "A NEW MACROPETALICHTHYID FROM CHINA, WITH SPECIAL REFERENCE TO THE ZOOGEOGRAPHY OF THE MACROPETALICHTHYIDAE (PLACODERMI)" (PDF). Vertebrata PalAsiatica. 34 (4): 253–268.


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