Schlotheimia is a genus of extinct cephalopods belonging to the subclass Ammonoidea that lived during the Hettangian stage at the beginning of the Early Jurassic.
==Description== The shell, or conch, of Schlotheimia rather evolute, coiled with all whorls exposed and only slightly embracing. The umbilicus is perforate as with more finely ribbed Angulaticeras. whorls are compressed, bearing ribs that cross the venter in chevrons, less developed in Sulciferites
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).