Simblaspis

Simblaspis is an extinct monospecific genus of arthrodire placoderm fish of the Early Devonian period. The type species Aleosteus eganensis was described in 1958, and was found in Pragian strata of the Qasr Limestone in Saudi Arabia.^[1]

Simblaspis Temporal range: Early Devonian: Pragian, 410–407 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	†Placodermi
Order:	†Arthrodira
Genus:	†Simblaspis Denison, 1958
Species
†Simblaspis cachensis Denison, 1958 (type)

It is one of the more basal members of the order Arthrodira, closely related to Aleosteus, as shown in the cladogram below:^[2]

Lunaspis broilii Eurycaraspis incilis Arthrodira Yujiangolepis liujingensis Antarctaspis mcmurdoensis Wuttagoonaspidae Yiminaspis shenme Wuttagoonaspis fletcheri Aethaspis major Aethaspis utahensis Lehmanosteus hyperboreus Aleosteus eganensis Simblaspis cachensis Kujdanowiaspis buczacziensis Kujdanowiaspis podolica Erikaspis zychi Sigaspis lepidophora Eskimaspis heintzi Baringaspis dineleyi Proaethaspis ohioensis Anarthraspis chamberlini Heightingtonaspis anglica Phyllolepida Gavinaspis convergens Phyllolepis orvini Austrophyllolepis sp. Cowralepis mclachlani Placolepis budawangensis Actinolepidae Bollandaspis woschmidti Actinolepis spinosa Actinolepis magna Actinolepis tuberculata Bryantolepis brachycephalus Phlyctaenioidei Phlyctaeniidae Groenlandaspidae Arctaspidae Dicksonosteus arcticus Arctolepidae Brachythoraci

Actinolepidoidei Phlyctaeniina

References

1. Denison, R. H. (1958). Early Devonian Fishes from Utah: Part III. Arthrodira. Chicago Natural History Museum.
2. Dupret, V.; Zhu, M. I. N.; Wang, J. N. Q. (2009). "The morphology of Yujiangolepis liujingensis (Placodermi, Arthrodira) from the Pragian of Guangxi (south China) and its phylogenetic significance". Zoological Journal of the Linnean Society. 157: 70. doi:10.1111/j.1096-3642.2009.00519.x.