''Aulacaganides'' is monospecific genus of a

Middle Permian The Guadalupian is the second and middle series/epoch of the Permian. The Guadalupian was preceded by the Cisuralian and followed by the Lopingian. It is named after the Guadalupe Mountains of New Mexico and Texas, and dates between 272.95 ± 0. ...

ammonite Ammonoids are a group of extinct marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs, commonly referred to as ammonites, are more closely related to living coleoids (i.e., octopuses, squid and cuttlefish) ...

belonging to the goniatitid 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 ...

. Fossils belonging to this genera were found in Hunan province of China. This genus has small, involute and thickly discoidal shell with central siphuncle. Venter is rounded with gently convex lateral sides and has ventrolateral sulcus on each side. Growth lines and constrictions are forming a sinus on the venter. Suture is goniatitic and has long narrow ventral lobes, while lateral lobes are deeply pointed. It is similar to '' Neoganides'', with which it shares shape of shell and suture. Differences are in ventrolateral sulcus, which is on each side and external lateral lobes are more pointed and deeper in the case of ''Aulacaganides''.

References

Shouchangoceratinae Ammonites of Asia Goniatitida genera Permian ammonites {{Goniatitida-stub