Rhynchonellata - Rhynchonellida - Leiorhynchidae

Alternative spelling: Orbiculatisiurostrum

Parent taxon: Leiorhynchinae according to A. Williams et al. 2002

See also Sepkoski 2002

Sister taxa: Caryorhynchus, Eliorhynchus, Eoparaphorhynchus, Eumetabolotoechia, Evanescirostrum, Hadrotatorhynchus, Havlicekella, Hyborhynchella, Iloerhynchus, Ilopsyrhynchus, Katuniella, Leiorhynchus, Leptocaryorhynchus, Mononusphaericorhynchus, Paurorhyncha, Properotundirostrum, Rossirhynchus, Ryocarhynchus, Stenoglossariorhynchus, Striatorhynchus, Tenuisinurostrum, Werneckeella, Ypsilorhynchus

Subtaxa: Orbiculatisinurostrum laevis

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Ecology: stationary epifaunal suspension feeder

Distribution: found only at Set III (upper part), Trench Z-17, near Debnik, Holy Cross Mountains, Poland (Devonian of Poland)

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Specimen images are retrieved through the ePANDDA API.