Alainaspis

Alainaspis platyrhina is an extinct cyathaspidid heterostracan agnathan vertebrate which existed in a marine environment in what is now the Northwest Territories of Canada, during the upper Silurian period.^[1] It was first named by David Elliott and David Dineley in 1985, and is placed in the monotypic genus Alainaspis, closely related to Boothiaspis.^[2]

Alainaspis platyrhina Temporal range: Upper Silurian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Chordate
Class:	Heterostraci
Order:	Cyathaspidiformes
Suborder:	Cyathaspidida
Family:	Ctenaspidae
Genus:	Alainaspis Elliott & Dineley, 1985
Species:	A. platyrhina
Binomial name
Alainaspis platyrhina Elliott & Dineley, 1985