Allocotoceras Temporal range:
Darriwilian
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Scientific classification
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Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Cephalopoda |
Subclass: | Nautiloidea |
Order: | † Endocerida |
Family: | † Endoceratidae |
Genus: | †
Allocotoceras Teichert & Glenister 1953 |
Allocotoceras is an endocerid from the Lower Ordovician (upper Canadian) Karmberg Formation of Australia ( Tasmania), [1] included in the Endoceratidae, based on small, straight or gently curved siphuncles.
Septal necks, according to Teichert, 1964, are holochoanitic, reaching to the previous septum. Endocones are described as having a dorsal wedge, or process, making the internal opening, or endosiphocone, semicircular in cross section. In this sense Allocotoceras seems to resemble the genus Najaceras.
Allocotoceras Temporal range:
Darriwilian
~ | |
---|---|
Scientific classification
![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Cephalopoda |
Subclass: | Nautiloidea |
Order: | † Endocerida |
Family: | † Endoceratidae |
Genus: | †
Allocotoceras Teichert & Glenister 1953 |
Allocotoceras is an endocerid from the Lower Ordovician (upper Canadian) Karmberg Formation of Australia ( Tasmania), [1] included in the Endoceratidae, based on small, straight or gently curved siphuncles.
Septal necks, according to Teichert, 1964, are holochoanitic, reaching to the previous septum. Endocones are described as having a dorsal wedge, or process, making the internal opening, or endosiphocone, semicircular in cross section. In this sense Allocotoceras seems to resemble the genus Najaceras.