Zurcheria

Zurcheria; Temporal range: Bajocian PreꞒ Ꞓ O S D C P T J K Pg N ↓
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Ammonoidea
Order:	Ammonitida
Superfamily:	Hildocerataceae
Family:	Hammatoceratidae
Subfamily:	Zurcheriinae
Genus:	Zurcheria; Douville, 1885

Zurcheria is a genus of dwarf ammonites from the Middle Jurassic included in the Hammatoceratidae ^[2] and lacking a keel. The shell is evolute, inner whorls exposed; whorls compressed and slightly overlapping. Bears ribs, which are sinuous folds that project strongly onto the arched venter.

References

Notes

^ Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Cephalopoda entry)". Bulletins of American Paleontology. 363: 1–560. Archived from the original on 2016-02-25. Retrieved 2017-10-18.
^ "Paleobiology Database - Zurcheria". Retrieved 2017-10-19.

Bibliography

W.J. Arkell, et al., 1957. Mesozoic Ammonoidea, Treatise on Invertebrate Paleontology, Part L, Mollusca 4. Geological Society of America and University of Kansas Press.

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[Sepkoski_Ceph-1] Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Cephalopoda entry)". Bulletins of American Paleontology. 363: 1–560. Archived from the original on 2016-02-25. Retrieved 2017-10-18.

[paleodb-2] "Paleobiology Database - Zurcheria". Retrieved 2017-10-19.

[1]

[2]