Rhombocorniculum Temporal range:
| |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
(unranked): | Panarthropoda |
Phylum: | † "Lobopodia" |
Family: | † Hallucigeniidae |
Genus: | †
Rhombocorniculum Walliser, 1958 [2] |
Rhombocorniculum is a species of small shelly fossil comprising twisted ornamented cones. It has been described from the Comely limestone and elsewhere. R. cancellatum straddles the Atdabanian/Botomian boundary. [1] The structure of its inner layer suggests that its phosphatic fibres formed within a flexible organic matrix. [3]
Three species are recognized — in stratigraphic succession: R. insolutum, R. cancellatum (=R. walliseri), and R. spinosus (=Rushtonites spinosus). [4] Landing (1995) refers R. insolutum to the strictocorniculids, along with Rushtonites. [3] Hinz (1987) considers insolutum to fall within the variability seen in cancellatum.
Based on details of the ornament and construction, Rhombocorniculum is interpreted as the spines of a Hallucigenia-like lobopodian worm. [5]
Rhombocorniculum Temporal range:
| |
---|---|
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
(unranked): | Panarthropoda |
Phylum: | † "Lobopodia" |
Family: | † Hallucigeniidae |
Genus: | †
Rhombocorniculum Walliser, 1958 [2] |
Rhombocorniculum is a species of small shelly fossil comprising twisted ornamented cones. It has been described from the Comely limestone and elsewhere. R. cancellatum straddles the Atdabanian/Botomian boundary. [1] The structure of its inner layer suggests that its phosphatic fibres formed within a flexible organic matrix. [3]
Three species are recognized — in stratigraphic succession: R. insolutum, R. cancellatum (=R. walliseri), and R. spinosus (=Rushtonites spinosus). [4] Landing (1995) refers R. insolutum to the strictocorniculids, along with Rushtonites. [3] Hinz (1987) considers insolutum to fall within the variability seen in cancellatum.
Based on details of the ornament and construction, Rhombocorniculum is interpreted as the spines of a Hallucigenia-like lobopodian worm. [5]