Gravesia (ammonite)

Gravesia Temporal range: Kimmeridgian–Tithonian PreꞒ Ꞓ O S D C P T J K Pg N
Specimen of Gravesia gigas
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	† Ammonoidea
Order:	† Ammonitida
Superfamily:	† Perisphinctoidea
Genus:	† Gravesia

Gravesia is an extinct genus of ammonite known from the Upper Jurassic (Kimmeridgian-Tithonian stages) of Europe. ^{[1] [2]}

References

1. Scherzinger, Armin; Schweigert, Günter (May 2016). "The ammonite genera Gravesia Salfeld and Pseudogravesia Hantzpergue in the Tithonian of S Germany and their correlation value with Western Europe" . Proceedings of the Geologists' Association. 127 (2): 288–296. doi:10.1016/j.pgeola.2015.12.010.
2. S.M., Gallois, R.W. Etches (2010). The distribution of the ammonite Gravesia (Salfeld, 1913) in the Kimmeridge Clay Formation (Late Jurassic) in Britain. Ussher Society. OCLC   769109876.