Priscomyzon
| Priscomyzon Temporal range: Late Devonian,
| |
|---|---|
| Holotype specimen | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Infraphylum: | Agnatha |
| Superclass: | Cyclostomi |
| Class: | Petromyzontida |
| Order: | Petromyzontiformes |
| Genus: | †Priscomyzon Gess et al., 2006 |
| Species: | †P. riniensis
|
| Binomial name | |
| †Priscomyzon riniensis Gess et al., 2006
| |
Priscomyzon is a genus of extinct lamprey that lived around 360 million years ago during the Famennian (Late Devonian) in a marine or estuarine environment in South Africa. This small agnathan is anatomically similar to the Mazon Creek lampreys, but is some 35 million years older. Its key developments included the first known large oral disc, circumoral teeth and a branchial basket.