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Orthonychia

Gastropoda - Cyrtoneritida - Orthonychiidae

Taxonomy
Orthonychia was named by Hall (1843) [Sepkoski's age data: S Ldov Tr Ladi-u Sepkoski's reference number: 362,797]. It is not extant. Its type is Orthonychia subrectum.

It was reranked as Capulus (Orthonychia) by Whidborne (1896); it was reranked as Platyceras (Orthonychia) by Knight et al. (1960).

It was assigned to Capulus by Whidborne (1896); to Platyceras by Knight et al. (1960); to Archaeogastropoda by Sepkoski (2002); and to Orthonychiidae by Bandel and Frýda (1999) and Bouchet et al. (2005).

Synonyms
Synonymy list
YearName and author
1843Orthonychia Hall
1859Igoceras Hall
1896Capulus (Orthonychia) Whidborne p. 48
1936Geronticeras Grabau
1960Platyceras (Orthonychia) Knight et al. p. 240
1999Orthonychia Bandel and Frýda
2002Orthonychia Sepkoski
2005Orthonychia Bouchet et al. p. 122

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
RankNameAuthor
phylumMollusca
classGastropoda
subclassNeritimorpha
orderCyrtoneritida()
familyOrthonychiidae
genusOrthonychia

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

G. †Orthonychia Hall 1843
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Orthonychia aculeata Barrois 1889
Orthonychia acuta Roemer 1856
Orthonychia baldwini Rohr et al. 1981
Orthonychia belli Clarke 1908
Orthonychia bowsheri Yochelson 1956
Orthonychia campanulata Barrois 1889
Orthonychia chesterense Meek and Worthen 1867
Orthonychia concavum Hall 1859
Orthonychia conicum Hall 1859
Orthonychia conoidea Goldfuss 1844
Orthonychia cornuforme Winchell 1863
Orthonychia costata Barrois 1889
Orthonychia daschi Rohr and Smith 1978
Orthonychia dentalium Hall 1862
Orthonychia dubium Barrois 1889
Orthonychia egorovi Mazaev 1996
Orthonychia elegans Perner 1903
Orthonychia enorme Lindström 1884
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Invalid names: Platyceras cyathinum Lindström 1884 [synonym]
Orthonychia extensum Barrois 1889
Orthonychia gracilis Mansuy 1913
Orthonychia herzeri Winchell 1871
Orthonychia korotkovae Mazaev 2019
Orthonychia marblecreekensis Talent and Philip 1956
Orthonychia mayesense Snider 1915
Orthonychia pajerensis Chronic 1949
Orthonychia parva Shumard and Swallow 1858
Orthonychia parvulum Whiteaves 1892
Orthonychia pentalvea Talent and Philip 1956
Orthonychia perplexum Hall 1879
Orthonychia prosseri Clarke and Swartz 1913
Orthonychia protei Oehlert 1883
Orthonychia puellaris Whidborne 1891
Orthonychia quadrangularis Whidborne 1891
Orthonychia rostratus Trenkner 1868
Orthonychia rotunda Whidborne 1896
Orthonychia sileni Oehlert 1883
Orthonychia spinigerum Worthen 1883
Orthonychia subrectum Hall 1859
Orthonychia talon Tolmachoff 1930
Orthonychia tortuosa Hall 1859
Orthonychia trigonale Barrois 1889
Orthonychia trirotundolobatum Talent and Philip 1956
Orthonychia undulatum Barrois 1889
Orthonychia unguiculata Clarke and Swartz 1913
Orthonychia ungula Weller 1906
Orthonychia variablis Tyler 1965
Orthonychia vishtytica Saladzius 1966
Orthonychia vomerium Winchell 1863
Orthonychia wanneri Delpey 1941
Platyceras (Orthonychia) aroostooki Williams and Breger 1916
Platyceras (Orthonychia) compressa Williams and Breger 1916
Platyceras (Orthonychia) cornutum Tschernischew 1885
Invalid names: Geronticeras Grabau 1936 [synonym], Igoceras Hall 1859 [synonym]
Diagnosis
No diagnoses are available