Newmarracarroceras

Newmarracarroceras; 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
Family:	†Sonniniidae
Subfamily:	†
Genus:	†Newmarracarroceras
Species
	N. clarkei Crick, 1894; N. fairbridgei Arkell, 1954;

Newmarracarroceras is an ammonite from the early middle Jurassic^[1] with a ribbed subinvolute shell with a keel running along the venter, or outer rim. The umbilicus is moderately wide, exposing the inner whorls exposed in part.

Newmarracarroceras has a fairly wide geographic range and includes species previously described under Fontannesia. Related genera include Asthenoceras, Fontannesia, Guhsania, and .

References[]

^ ^a ^b Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Cephalopoda entry)". Bulletins of American Paleontology. 363: 1–560. Retrieved 2017-10-18.
^ Paleobiology Database - Newmarracarroceras. 2017-10-19.

Arkell, W.J.; Kummel, B.; Wright, C.W. (1957). Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology, Part L, Mollusca 4. Lawrence, Kansas: 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. Retrieved 2017-10-18.

[paleodb-2] Paleobiology Database - Newmarracarroceras. 2017-10-19.

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