Pseudotemperoceras is an extinct nautiloid cephalapod belonging to the Orthocerida

Orthocerida

Orthocerida is an order of extinct nautiloid cephalopods also known as the Michelinocerda that lived from the Early Ordovician possibly to the Late Triassic . A fossil found in the Caucasus suggests they may even have survived until the Early Cretaceous...

 from the far eastern part of the Russian Federation that lived during the Triassic

Triassic

The Triassic is a geologic period and system that extends from about 250 to 200 Mya . As the first period of the Mesozoic Era, the Triassic follows the Permian and is followed by the Jurassic. Both the start and end of the Triassic are marked by major extinction events...

 from 249.7—245 mya, existing for approximately .

Taxonomy

Pseudotemperoceras was named by Schastlivtseva (1986) and is listed in the Orthocerida

Orthocerida

Orthocerida is an order of extinct nautiloid cephalopods also known as the Michelinocerda that lived from the Early Ordovician possibly to the Late Triassic . A fossil found in the Caucasus suggests they may even have survived until the Early Cretaceous...

 in Sepkoski (2002)

Morphology

Pseudotemperoceras has a slender, orthoconic shell that resembles that of the earlier, Paleozoic, Temperoceras

Temperoceras

Temperoceras is an orthoconic nautiloid cephalopod named by Barskov in 1960 that lived in what is now north Africa, Europe, and Asia during the early Paleozoic.-Taxonomy:...

from which it gets its name, although Temperoceras is a geisonoceratid

Geisonoceratidae

Geisonoceratidae is an extinct family of orthoceroid cephalopods endemic to what would be Asia, Europe, and North America from the Middle Ordovician to the Middle Devonian living from about 470—380 mya, existing for approximately 90 million years...

 rather than an orthoceratid

Orthoceratidae

Orthoceratidae, is an extinct family of actively mobile carnivorous cephalapods, subclass Nautiloidea, that lived in what would be North America, Europe, Asia, Africa, and Australia from the Ordovician through Triassic from 490—203.7 mya, existing for approximately .-Taxonomy:Orthoceratidae was...

Fossil distribution

So far Pseudotemperoceras is known only from the western Verkhoyansk Range, Kharaulakhsk Mountains, in the Russian state of Yakutia in eastern Siberia

Siberia

Siberia is an extensive region constituting almost all of Northern Asia. Comprising the central and eastern portion of the Russian Federation, it was part of the Soviet Union from its beginning, as its predecessor states, the Tsardom of Russia and the Russian Empire, conquered it during the 16th...

, where it is associated with species of Trematoceras

Trematoceras

Trematoceras is an orthoconic nautiloid cephalopod from the Upper Triassic of Europe and Asia named by Eichwald in 1851.-Taxonomy:Trematoceras is included in the Michelinoceratinae, a subfamily of the Orthoceratidae-Morphology:...

.