Isorthis (Protocortezorthis) Walmsley and Boucot 1975 (lamp shell)

Rhynchonellata - Orthida - Dalmanellidae

Full reference: V. G. Walmsley and A. J. Boucot. 1975. The Phylogeny, Taxonomy and Biogeography of Silurian and Early to Mid Devonian Isorthinae (Brachiopoda). Palaeontographica Abteilung A A148(1-3):34-108

Parent taxon: Isorthis according to V. G. Walmsley and A. J. Boucot 1975

Sister taxa: Isorthis (Arcualla), Isorthis (Isorthis), Isorthis (Ovalella), Isorthis alpha, Isorthis bailyi, Isorthis crassa, Isorthis estona, Isorthis festiva, Isorthis loveni, Isorthis mediocra, Isorthis parvulus, Isorthis pygmaea, Isorthis slitensis

Subtaxa: none

Ecology: stationary epifaunal suspension feeder

Distribution:

• Devonian of Australia (2 collections), France (1), Spain (1)

• Silurian to Devonian of Argentina (1)

• Silurian of Argentina (4), Australia (1)

Total: 10 collections including 11 occurrences

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