Aztecodus

{{short description|Extinct genus of Cartilaginous fish}}

{{Taxobox

| fossil_range = {{fossil range| Middle Devonian}}

| image =

| image_caption =

| regnum = Animalia

| phylum = Chordata

| classis = Chondrichthyes

| ordo = Omalodontiformes

| familia = Aztecodontidae

| genus = Aztecodus

| genus_authority = Long & Young, 1995

}}

Aztecodus is an extinct genus of Chondrichthyian from the Devonian period.{{Cite web|title=Fossilworks: Aztecodus|url=https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=151495|access-date=17 December 2021|website=fossilworks.org}} It is named for middle to late Devonian-aged Aztec Siltstone of southern Victoria Land, Antarctica which produces this genus. It currently contains a singular species, A. harmsenae. It is named for sedimentologist Dr. Fraka Harmsen. It has unique teeth which are broad with widely divergent cusps separated by a crenulated cutting edge.Long, John & Young, Gavin. Sharks from the Middle-Late Devonian Aztec Siltstone, southern Victoria Land, Antarctica Records of the Western Australian Museum 17: 287-308 (1995). Anareodus statei may be a junior synonym to this genus and species.Burrow, Carole & Long, John & Trinajstic, Kate. (2009). Disarticulated acanthodian and chondrichthyan remains from the upper Middle Devonian Aztec Siltstone, Southern Victoria Land, Antarctica. Antarctic Science. 21. 71-88. 10.1017/S0954102008001521.