Hardmanoceras Temporal range: uL
Ordovician
| |
---|---|
Scientific classification
![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Cephalopoda |
Subclass: | Nautiloidea |
Order: | † Tarphycerida |
Family: | † Trocholitidae |
Genus: | †
Hardmanoceras Teichert & Glenister, 1952 |
Hardmanoceras is a tarphycerid genus belonging to the Trocholitidae from the upper Lower Ordovician to possibly the lower Middle Ordovician, found in Western Australia. Hardmanoceras is like Discoceras but prominently ribbed and with a depressed whorl section. The body, or living, chamber is long, 1 1/8 volutions long. The ultimate portion is slightly divergent, not an uncommon characteristic of tarphycerids.
Harmanoceras was named by Teichert and Glenister in 1952. The type us Hardmanoceras lobatum.