''Vredenburgites'' is a genus of ceratitids in the family

Trachyceratidae The Trachyceratidae is an extinct family of ceratitid ammonoid cephalopods. The Trachyceratidae makes up part of the superfamily Trachyceratoidea along with such families as the Buchitidae, Distichitidae, Dronovitidae and Noridiscitidae. ...

. Its shell has numerous, thin, flexious ribs. Related genera include ''

Anasirenites ''Anasirenites'' is a genus of extinct ammonoid cephalopods within the family Trachyceratidae which is part of the ceratitid superfamily Clydonitaceae; sometimes considered a subgenus of '' Sirenites''. ''Anasirenites'' is characterized by a ven ...

'', ''

Sirenites ''Sirenites'' is a genus of ammonoid Ammonoids are a group of extinct marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs, commonly referred to as ammonites, are more closely related to living coleoids ...

'', and '' Wangoceras''.

References

* Arkell, et al., Mesozoic Ammonoidea,

Treatise on Invertebrate Paleontology The ''Treatise on Invertebrate Paleontology'' (or ''TIP'') published by the Geological Society of America and the University of Kansas Press, is a definitive multi-authored work of some 50 volumes, written by more than 300 paleontologists, and co ...

, Part L, Mollusca 4, Geological Society of America. 1957.
Sirentitinae at Paleodb
Trachyceratidae Ceratitida genera Triassic ammonites {{Ceratitida-stub