Temperoceras is an orthoconic

Orthocone

An orthocone is a usually long straight shell of a nautiloid cephalopod. During the 18th and 19th centuries, all shells of this type were named Orthoceras, but it is now known that many groups of nautiloids developed or retained this type of shell....

 nautiloid cephalopod named by Barskov in 1960 that lived in what is now north Africa, Europe, and Asia during the early Paleozoic

Paleozoic

The Paleozoic era is the earliest of three geologic eras of the Phanerozoic eon, spanning from roughly...

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Taxonomy

Temperoceras is included in the orthocerid

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...

 family Geisonoceratidae

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...

the type is Orthoceras ludense

Morphology

Temperoceras has an orthoconic shell with a tubular siphuncle that contains annular deposits that are restricted to or begin at the septal openings.

Distribution

Temperoceras has been found in sediments ranging in age from Ordovician to Devonian in north Africa, southern Europe, and China.