''Sunnaginia'' is a
tommotiid
Tommotiids are an extinct group of Cambrian invertebrates thought to be early lophophorates (the group containing Bryozoa, Brachiopoda, and Phoronida).
The majority of tommotiids are mineralised with calcium phosphate rather than calcium car ...
known from the Comely Limestone and elsewhere, and appears to represent one of the closest relatives to the
brachiopod
Brachiopods (), phylum Brachiopoda, are a phylum of trochozoan animals that have hard "valves" (shells) on the upper and lower surfaces, unlike the left and right arrangement in bivalve molluscs. Brachiopod valves are hinged at the rear end, w ...
crown group
In phylogenetics, the crown group or crown assemblage is a collection of species composed of the living representatives of the collection, the most recent common ancestor of the collection, and all descendants of the most recent common ancestor. ...
, in a more derived position than ''
Eccentrotheca
''Eccentrotheca'' is a genus of "tommotiid" known from Cambrian deposits. Its sclerites form rings that are stacked to produce a widening-upwards conical scleritome. Individual plates have been homologized with the valves of brachiopods, and a r ...
''.
See also
*
Sunnagyn
The Sunnagyn Range (russian: Суннагын), also known as Aldan-Uchur (russian: Алда́но-Учу́рский хребе́т; sah, Алдан-Учур), is a range of mountains in North-eastern Russia. Administratively the range is part o ...
References
Prehistoric protostome genera
Cambrian animals of Europe
Paleozoic life of Nova Scotia
{{cambrian-animal-stub
Cambrian genus extinctions