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] It is one of the more basal members of the order Arthrodira, closely related to Aleosteus, as shown in the cladogram below:[2] Eurycaraspis incilis Lunaspis broilii Yujiangolepis liujingensis Antarctaspis mcmurdoensis Wuttagoonaspis fletcheri Yiminaspis shenme 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 Gavinaspis convergens Austrophyllolepis sp.

Cowralepis mclachlani Phyllolepis orvini Placolepis budawangensis Bollandaspis woschmidti Actinolepis spinosa Actinolepis magna Actinolepis tuberculata Bryantolepis brachycephalus Phlyctaeniidae Groenlandaspidae Dicksonosteus arcticus Arctolepidae Brachythoraci

This article about a placoderm is a stub.