PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Pamirites alter

Cephalopoda - Ammonoida - Vidrioceratidae

Taxonomy

Prostacheoceras alter was named by Leonova (1989). Its type specimen is PIN 3591/75, a shell, and it is a 3D body fossil. Its type locality is Kur-Istyk River, Kochusu suite, Pamir Mountains, which is in a Kungurian marine horizon in the Kochusu Formation of Tajikistan.

It was recombined as Pamirites alter by Leonova (2018).

Year	Name and author
1989	Prostacheoceras alter Leonova
1992	Prostacheoceras alter Leonova p. 166 figs. Pl 32, fig 18
2002	Prostacheoceras alter Leonova
2004	Prostacheoceras alter Zhou and Liengjarern p. 332 figs. 11.1-11.4,15.1
2018	Pamirites alter Leonova p. 240

part	N	mean	minimum	maximum	median	s.d.
shell height	4	9.81	7.70	12.5	10.1	3.39
shell diameter	4	23.3	15.6	38.1	22.4	9.64
shell inflation	4	3.40	-	-	3.40	-

Time interval	Ma	Country or state	Original ID and collection number
Artinskian	290.1 - 283.3	Tajikistan	Prostacheoceras alter (130250)
Kungurian	283.3 - 274.4	Tajikistan	Prostacheoceras alter (type locality: 177981)
Kungurian	283.3 - 274.4	Thailand	Prostacheoceras alter (61737)