''Lobendoceras'' is a
proterocameraceratid with a rather large, moderately expanded, straight shell with a large marginal
siphuncle
The siphuncle is a strand of tissue passing longitudinally through the shell of a cephalopod mollusk. Only cephalopods with chambered shells have siphuncles, such as the extinct ammonites and belemnites, and the living nautiluses, cuttlefish, and ...
in which
sutures have a broad, deep, ventral lobe and septal necks are subholochoanitic to holochoanitic.
Lobendoceras has been found in Lower
Ordovician
The Ordovician ( ) is a geologic period and System (geology), system, the second of six periods of the Paleozoic Era (geology), Era. The Ordovician spans 41.6 million years from the end of the Cambrian Period million years ago (Mya) to the start ...
marine strata in NW Australia and Siberia.
See also
*
List of nautiloids
This list of nautiloids is a comprehensive listing of all genera that have ever been included in the subclass Nautiloidea, excluding purely vernacular terms. The list includes all commonly accepted genera, but also genera that are now considered in ...
References
* Curt Teichert, 1964. Endoceratoidea.
Treatise on Invertebrate Paleontology
The ''Treatise on Invertebrate Paleontology'' (or ''TIP'') published by the Geological Society of America and the University of Kansas Press, is a definitive multi-authored work of some 50 volumes, written by more than 300 paleontologists, and co ...
, Part K. Geol Soc. of America and Univ of Kansas press. Teichert and Moore (eds)
* Teichert and Glenister 1954 . Early Ordovician cephalopod fauna from northwestern Australia. Bulletins of American Paleontology 35 (150): 7–112.
{{Taxonbar, from=Q6663651
Prehistoric nautiloid genera
Fossils of Russia
Nautiloids
Ordovician cephalopods
Prehistoric invertebrates of Australia