Rhactorhynchia trigona Crickmay 1933 (lamp shell)

Rhynchonellata - Rhynchonellida - Tetrarhynchiidae

Full reference: C. H. Crickmay. 1933. Attempt to Zone the North American Jurassic on the Basis of its Brachiopods. Geological Society America Bulletin 44:871-894

Belongs to Rhactorhynchia according to C. H. Crickmay 1933

Sister taxa: Rhactorhynchia albertensis, Rhactorhynchia borissjaki, Rhactorhynchia brevis, Rhactorhynchia diffusa, Rhactorhynchia distracta, Rhactorhynchia grigorievi, Rhactorhynchia gurovi, Rhactorhynchia hampenensis, Rhactorhynchia humilis, Rhactorhynchia impar, Rhactorhynchia lauta, Rhactorhynchia lutugini, Rhactorhynchia oscolica, Rhactorhynchia pinguis, Rhactorhynchia quadriplicata, Rhactorhynchia regalis, Rhactorhynchia rhacta, Rhactorhynchia subquadriplicata, Rhactorhynchia subtetrahedra, Rhactorhynchia termieri, Rhactorhynchia tumefacta, Rhactorhynchia turgidula, Rhactorhynchia voluta

Type specimen: Its type locality is Ravine 35 (trigona zone), southwest slope of Mount Jura, which is in a Discites marine sandstone in the Mormon Formation of California

Ecology: stationary epifaunal suspension feeder

Distribution: found only at Ravine 35 (trigona zone), southwest slope of Mount Jura

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