Hematitida is a group of coleoid cephalopods known from the early Carboniferous Period. They are the oldest definite coleoids, although there are controversial claims for even older coleoids from the Devonian. Fossil hematitidans have so far been found only in Arkansas and Utah of the United States. The only family described so far is Hematitidae.

Characteristics

Some features shared by hematitidans include

Classification

The classification for this group comes from Doguzhaeva et al. 2003 Order Hematitida Doguzhaeva, Mapes, & Mutvei, 2002