Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Spiralia
Cladus: Lophotrochozoa
Phylum: Mollusca
Classis: Cephalopoda
Subclassis: † Ammonoidea
Ordo: † Ammonitida
Subordo: † Ancyloceratina
Superfamilia: † Turrilitoidea
Familia: Nostoceratidae
Genus: Exiteloceras
Species: E. rude
Name
Exiteloceras Hyatt 1894
References
Kennedy, W. J., Landman, N. H., Cobban, W. A., & Johnson, R. O., (2000). "Additions to the Ammonite Fauna of the Upper Cretaceous Navesink Formation of New Jersey" American Museum Novitates 3306(1):1–30
Exiteloceras is an ammonite genus from the Late Cretaceous.[1]
Exiteloceras was proposed by Alpheus Hyatt in 1894 for heteromorph ammonites with shells that are loosely coiled in a plane, early whorls varying from straight limbs connected by semicircular elbows to elliptical or nearly circular loops, later whorls being elliptical to circular. The whorl section is ovate with the dorsum on the inside curve broader than the venter on the outside. The ribs may be straight or flexuous and mostly slant. Most end with a tubule on the ventrolateral shoulder. The suture is ammonitic. The deeply incised sutural elements are asymmetric, including the double-pronged ventral lobe.
Distribution
Cretaceous of Egypt, Iraq, British Columbia, California, Colorado, Delaware, Montana, New Mexico, Wyoming.[2][3]
References
Notes
Sepkoski, Jack (2002). "Sepkoski's Online Genus Database". Retrieved 2014-05-28.
"Paleobiology Database - Exiteloceras". Retrieved 2014-05-28.
Sandy M. S. McLachlan; James W. Haggart (2017). "Reassessment of the late Campanian (Late Cretaceous) heteromorph ammonite fauna from Hornby Island, British Columbia, with implications for the taxonomy of the Diplomoceratidae and Nostoceratidae". Journal of Systematic Palaeontology. Online edition (15): 1247–1299. doi:10.1080/14772019.2017.1381651.
Bibliography
A Pictorial Guide to Fossils by Gerard Ramon Case
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.
Cobban, William A.,1974. Ammonites from the Navesink Formation at Atlantic Highlands, New Jersey; USGS Prof Paper 845.
Retrieved from "http://en.wikipedia.org/"
All text is available under the terms of the GNU Free Documentation License
