''Neoaganides'' is a small, 1–2 cm diameter subdiscoidal to subglobular goniatitid belonging to the family

Pseudohaloritidae Pseudohaloritidae is the larger of two families that form the goniatitid superfamily Pseudohaloritoidea, the other being the monogenerc Maximitidae. They are part of the vast array of shelled cephalopods known as ammonoids that are more closel ...

that lived from the Late Pennsylvanian to the

Late Permian Late may refer to: * LATE, an acronym which could stand for: ** Limbic-predominant age-related TDP-43 encephalopathy, a proposed form of dementia ** Local-authority trading enterprise, a New Zealand business law ** Local average treatment effect, ...

, existing for some 56 million years. The shell of ''Neoaganides'' has a well-developed hyponomic sinus and shallow lateral reentrents at the aperture outlined by growth lines. Otherwise sculpture is lacking. The mature peristome rimming the aperture is simple and unconstricted, without pronounced lappets. The siphuncle is subcentral, ventral of the dorsal septal flexture. The suture is simple, goniatitic, with essentially symmetrical, undivided lobes. The ventral lobe is moderately wide, lanceolate or linguate, tongue-shaped; the dorsal lobe deep and narrow. The lateral and umbilical lobes (2 pairs) are broad, the internal lobes narrow and close to the dorsal. ''Neoaganitdes'' is included in the subfamily Shouchangoceratinae, which are pseuohalorids characterized by rounded or attenuate "goniatitic" sutures, and most likely gave rise to the other, more prominently sculptured genera in the same subfamily.

References

* Frest, T.J, B.F Glenister and W.M Furnish; 1981. Pennsylvanian-Permian Cheiloceratacean Ammonoid Families Maximitidae and Pseudohaloritidae. Memoir 11, the Paleontological Society; Jour Paleo V 55, May 1981, supplement. * Miller, A.K. and W.M Furnish, 1957. Permian Ammonoids from Southern Arabia. Journal of Paleontology V.31, no. 6, p 1043 _, Nov 1957.

External links

* Neoaganides in Paleobiology d

* Neoaganides in GONIAT onlin

Shouchangoceratinae Permian ammonites Goniatitida genera Fossils of Iran Pennsylvanian first appearances Permian genus extinctions {{Goniatitida-stub