| Compagopiscis | |
|---|---|
 | |
Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | †Placodermi |
| Order: | †Arthrodira |
| Suborder: | †Brachythoraci |
| Clade: | †Eubrachythoraci |
| Clade: | †Coccosteomorphi |
| Superfamily: | †Incisoscutoidea |
| Genus: | †Compagopiscis Gardiner & Miles, 1994 |
| Species | |
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Compagopiscis is anextinctgenus ofplacoderm known from theGogo Formation. It lived in theUpper Devonian (Frasnian stage) ofWestern Australia.[1] The genus ismonotypic, with its only species beingCompagopiscis croucheri.[2]
Compagopiscis is one of the earliest knownvertebrates to have teeth.[3] An analysis of its bite force suggests that it was ageneralist predator, having a diverse diet.[4] Fossils have been found in numbers, suggesting possibleschooling behavior.[4]
Compagopiscis was originally classified as a member of thefamilyPlourdosteidae.[5] However,phylogenetic analysis later found Plourdosteidae to be an invalid grouping, and the family was dismissed.[6]Torosteus is now considered to be a member of thesuperfamilyIncisoscutoidea, which belongs to thecladeCoccosteomorphi, one of the two major clades withinEubrachythoraci. Thecladogram below shows thephylogeny ofCompagopiscis:[7]
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