Sivorthis occidentalis Cooper 1956 (lamp shell)

Rhynchonellata - Orthida - Orthidae

Alternative combination: Orthambonites occidentalis

Belongs to Sivorthis according to V. Jaanusson and M. G. Bassett 1993

Sister taxa: Sivorthis ardmillanensis, Sivorthis bellus, Sivorthis calatravaensis, Sivorthis eucharis, Sivorthis filistera, Sivorthis friendsvillensis, Sivorthis minus, Sivorthis minutus, Sivorthis multicostellatus, Sivorthis noctilio, Sivorthis precordillerana, Sivorthis tenuicostatus

Ecology: stationary epifaunal suspension feeder

Distribution:

• Ordovician of United States (1: Nevada collection)

• Whiterockian of United States (2: Nevada)

Total: 3 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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