Ulrichoceras

Systematic Paleontology

Class Cephalopoda

Subclass Nautiloidea

Order Discosorida

Family Cyrtogomphoceratidae

Genus  Ulrichoceras

Ulrichoceras, named by Foeste in 1928, is a early cyrtogomphoceratid derived from Reudemannoceras, found in the middle Ordovician of Wisconsin. The shell is endogastrically curved with the siphuncle on the concave ventral side, and expands fairly rapidly from the apex to the middle of the body chamber, then contracts toward the aperture. Sutures are close spaced, chambers very short. Nothing is known of the soft part anatomy.

Ulrichoceras probably lived face down, prowling the sea floor or hovering close above. May have given rise to Strandoceras and to the exograstric Westonoceratidae