''Neocomites'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

ammonite Ammonoids are extinct, (typically) coiled-shelled cephalopods comprising the subclass Ammonoidea. They are more closely related to living octopuses, squid, and cuttlefish (which comprise the clade Coleoidea) than they are to nautiluses (family N ...

from the Lower Cretaceous,

Berriasian In the geological timescale, the Berriasian is an age/ stage of the Early/Lower Cretaceous. It is the oldest subdivision in the entire Cretaceous. It has been taken to span the time between 143.1 ±0.6 Ma and 137.05 ± 0.2 (million years ago) ...

Hauterivian The Hauterivian is, in the geologic timescale, an age in the Early Cretaceous Epoch or a stage in the Lower Cretaceous Series. It spans the time between 132.6 ± 2 Ma and 125.77 (million years ago). The Hauterivian is preceded by the Valangi ...

, and

type genus In biological taxonomy, the type genus (''genus typica'') is the genus which defines a biological family and the root of the family name. Zoological nomenclature According to the International Code of Zoological Nomenclature, "The name-bearin ...

for the

Neocomitidae Neocomitidae is a family of Lower Cretaceous Epoch, Lower Cretaceous Ammonitida, ammonitids comprising genera with strongly ribbed evolute (all whorls exposed) to smooth, fairly involute (inner whorls mostly hidden) shells. In the 1957 descripti ...

. with and (1996), ''Mollusca 4 Revised, Cretaceous Ammonoidea'', vol. 4, in ''Treatise on Invertebrate Paleontology'', Part L (Roger L. Kaesler et аl. eds.), Boulder, Colorado: The Geological Society of America & Lawrence, Kansas: University of Kansas Press, p. 60.

Description

The shell of ''Neocomites'' is fairly involute and compressed with flattish sides; covered with flexuous ribs that branch in small sheaves from faint umbilical tubercles, in some branching again or intercaled further out on the whorls, ending in small oblique bullae in either side of a smooth flat venter. Ribs may cross the venter transversely on later whorls. Sutures have deep 1st lateral lobes.

Distribution

''Neocomites'' has a fairly widespread distribution and has been found in such places as central and southern Europe, North Africa, Madagascar, northern India, Borneo, Sumatra, Texas, Mexico, Colombia (

Macanal Formation The Macanal Formation or Macanal Shale (, Kilm, K1m) is a list of fossiliferous stratigraphic units of Colombia, fossiliferous formation (geology), geological formation of the Altiplano Cundiboyacense and Tenza Valley in the Cordillera Oriental (Co ...

Eastern Ranges The Eastern Ranges is an Australian rules football team that currently competes in the Talent League, the Victorian statewide under-18s competition. History Inaugural playing squad (1992) Honours *Premiers (2): 2002, 2013 *Runners-up (6): 199 ...

),Piraquive et al., 2011, p.204 Peru, and Argentina.

References

Bibliography

* *

External links

* * {{Taxonbar, from=Q598542 Ammonitida genera Perisphinctoidea Cretaceous ammonites Ammonites of Africa Ammonites of Asia Ammonites of Europe Ammonites of North America Cretaceous Mexico Fossils of Mexico Ammonites of South America Cretaceous Argentina Fossils of Argentina Cretaceous Colombia Fossils of Colombia Cretaceous Peru Fossils of Peru Fossil taxa described in 1905