Gastropoda - Cyrtoneritida - Orthonychiidae

Full reference: J. M. Clarke and C.K. Swartz. 1913. Systematic paleontology of the Upper Devonian deposits of Maryland. Middle and Upper Devonian 535-720

Belongs to Orthonychia according to P. J. Wagner 2023

See also Clarke and Swartz 1913

Sister taxa: Orthonychia aculeata, Orthonychia acuta, Orthonychia baldwini, Orthonychia belli, Orthonychia bowsheri, Orthonychia campanulata, Orthonychia chesterense, Orthonychia concavum, Orthonychia conicum, Orthonychia conoidea, Orthonychia cornuforme, Orthonychia costata, Orthonychia daschi, Orthonychia dentalium, Orthonychia dubium, Orthonychia egorovi, Orthonychia elegans, Orthonychia enorme, Orthonychia extensum, Orthonychia gracilis, Orthonychia herzeri, Orthonychia inequilaterale, Orthonychia infabricatus, Orthonychia jeffersonensis, Orthonychia korotkovae, Orthonychia marblecreekensis, Orthonychia mayesense, Orthonychia obliquesulcata, Orthonychia pajerensis, Orthonychia parva, Orthonychia parvulum, Orthonychia pentalvea, Orthonychia perplexum, Orthonychia prosseri, Orthonychia protei, Orthonychia puellaris, Orthonychia quadrangularis, Orthonychia rostratus, Orthonychia rotunda, Orthonychia sciotoensis, Orthonychia sileni, Orthonychia spinigerum, Orthonychia subrectum, Orthonychia talon, Orthonychia tortuosa, Orthonychia trigonale, Orthonychia trirotundolobatum, Orthonychia undulatum, Orthonychia ungula, Orthonychia variablis, Orthonychia vishtytica, Orthonychia vomerium, Orthonychia wanneri, Orthonychia waverlyensis, Platyceras (Orthonychia) aroostooki, Platyceras (Orthonychia) compressa, Platyceras (Orthonychia) compressum, Platyceras (Orthonychia) conoideum, Platyceras (Orthonychia) cornutum, Platyceras (Orthonychia) ivanovi, Platyceras (Orthonychia) occidens, Platyceras (Orthonychia) ungula

Ecology: epifaunal

Distribution: found only at Williams Road on Polish Mountain, 1660 (Devonian of Maryland)

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Specimen images are retrieved through the ePANDDA API.