Type species: Onychocella marioni Jullien, 1882 (= Cellepora angulosa Reuss, 1847)?
The status of the genus is equivocal: some authorities state it to be a synonym of Semieschara.
| Synonyms | Author | Type species |
|---|---|---|
| Rhagasostoma | Koschinsky, 1885 | Rhagasostoma hexagonum Koschinsky, 1885 |
| Periteichisma | Koschinsky, 1885 | Vincularia geometrica Reuss, 1869 (= Onychocella subpyriformis (d'Archiac, 1846)) |
This genus includes the species:
| Onychocella abscondita borlaie (status?) |
Guha, 1989 | Late Cretaceous | India |
| Onychocella acasta | (d'Orbigny, 1851) | Cretaceous | France |
| Onychocella acis | (d'Orbigny, 1851) | Cretaceous Coniacian-Maastrichtian | France |
| Onychocella acmon | (d'Orbigny, 1851) | Cretaceous Santonian-Campanian | France, Germany |
| Onychocella advena | Brydone, 1936 | Cretaceous Campanian | France |
| Onychocella aegle | (d'Orbigny, 1851) | Cretaceous Turonian-Santonian | France |
| Onychocella agatha | (d'Orbigny, 1851) | Cretaceous Turonian-Santonian | France |
| Onychocella alrensis | Brydone, 1936 | Cretaceous Santonian | England |
| Onychocella alticollis | Brydone, 1936 | Cretaceous Coniacian | England |
| Onychocella altimuralis | Voigt, 1930 | Cretaceous Maastrichtian | Germany |
| Onychocella altonensis | Brydone, 1930 | Cretaceous Turonian | England |
| Onychocella alula | Hastings, 1930 | Recent Neogene Pleistocene |
E. Pacific Nigeria |
| Onychocella alveolata | Taylor & McKinney, 2006 | Cretaceous Maastrichtian | USA N.Carolina |
| Onychocella americana | (Canu & Bassler, 1933) | Paleogene Paleocene Thanetian | USA |
| Onychocella amudariensis | Favorskaya, 1980 | Late Cretaceous | Turkmenistan |
| Onychocella? andromeda | (d'Orbigny, 1851) | Cretaceous Santonian | France |
| Onychocella anglica | (Brydone, 1910) | Late Cretaceous Maastrichtian | England |
| Onychocella angulosa | (Reuss, 1847) | Tertiary Recent? |
Europe, Egypt E. Atlantic, Mediterranean |
| Onychocella angulosa demarcqi | David & Pouyet, 1970 | Neogene Miocene | France, Morocco, Algeria |
| Onychocella antiqua | (Busk, 1858) | Recent | Atlantic |
| Onychocella ariyalurensis | Guha & Senthil Nathan, 1990 | Cretaceous Maastrichtian | India |
| Onychocella atalanta | (d'Orbigny, 1851) | Cretaceous Campanian | France |
| Onychocella baltica | Voigt, 1930 | Cretaceous Maastrichtian | Germany |
| Onychocella bassleri | Brydone, 1936 | Cretaceous Coniacian | England |
| Onychocella bellona | (d'Orbigny, 1851) | Cretaceous Maastrichtian | France |
| Onychocella blainvillei | (von Hagenow, 1851) | Cretaceous Maastrichtian | Netherlands |
| Onychocella boulei | Canu, 1904 | Cretaceous Turonian | Egypt |
| Onychocella brightoniensis | Brydone, 1936 | Cretaceous | England |
| Onychocella calceola | (Brydone, 1936) | Cretaceous Maastrichtian | England |
| Onychocella calceolum attoeana | (Brydone, 1936) | Cretaceous Campanian | England |
| Onychocella calvimontana | Canu, 1907 | Paleogene Eocene Lutetian | France |
| Onychocella camerata | (von Hagenow, 1851) | Cretaceous Maastrichtian | Netherlands, Germany |
| Onychocella cavernosa | Voigt & Schneemilch, 1986 | Late Cretaceous | Germany |
| Onychocella celsa | Canu & Bassler, 1920 | Paleogene Eocene Priabonian | SE USA |
| Onychocella celsa montgomeryensis | McGuirt, 1941 | Paleogene Eocene Priabonian | USA (Louisiana) |
| Onychocella celsopora | (Canu, 1920) | Cretaceous Maastrichtian | France |
| Onychocella cepha | (d'Orbigny, 1851) | Cretaceous Maastrichtian | France |
| Onychocella cestasensis | Vigneaux, 1949 | Neogene Miocene Burdigalian | France |
| Onychocella chilostoma | (Marsson, 1887) | Cretaceous Maastrichtian | Germany |
| Onychocella cingens | (Koschinsky, 1885) | Paleogene Eocene Lutetian | Germany |
| Onychocella circumvallata | (Koschinsky, 1885) | Paleogene Eocene Lutetian | Germany |
| Onychocella cingulata | (Stoliczka, 1872) | Cretaceous Maastrichtian | India |
| Onychocella clito | (d'Orbigny, 1851) | Cretaceous Campanian | France |
| Onychocella cochlearis | (Marsson, 1887) | Cretaceous Maastrichtian | Germany |
| Onychocella columella | Berthelsen, 1962 | Paleogene Paleocene Danian | Denmark |
| Onychocella congesta | (Marsson, 1887) | Cretaceous Maastrichtian | Germany |
| Onychocella crassimarginata | Voigt, 1957 | Cretaceous Maastrichtian | Belgium, Netherlands |
| Onychocella cressida | (d'Orbigny, 1851) | Cretaceous Campanian | France |
| Onychocella cuckmeriensis | Brydone, 1936 | Cretaceous Coniacian | England |
| Onychocella cucullata | Thornely, 1905 | Recent | Indian O. |
| Onychocella cyane | (d'Orbigny, 1851) | Cretaceous Coniacian-Santonian | France |
| Onychocella? cybele | (d'Orbigny, 1851) | Cretaceous Coniacian, Maastrichtian | France |
| Onychocella cyclostoma | (Goldfuss, 1826) | Cretaceous Maastrichtian | Netherlands |
| Onychocella cylindrica | (von Hagenow, 1851) | Cretaceous Maastrichtian | Netherlands |
| Onychocella cylindrica Homonym |
Guha & Senthil Nathan, 1990 | Cretaceous Maastrichtian | India |
| Onychocella dasguptai | Guha, 1989 | Cretaceous Cenomanian-Turonian | India |
| Onychocella decipiens | Voigt, 1924 | Cretaceous Turonian-Campanian | Germany |
| Onychocella delarueana | (d'Orbigny, 1851) | Cretaceous Maastrichtian | France |
| Onychocella depressa | (von Hagenow, 1851) | Cretaceous | Netherlands, Germany, Czech Rep. |
| Onychocella devoniensis | Brydone, 1936 | Cretaceous Turonian | England |
| Onychocella dichotoma | (Goldfuss, 1826) | Cretaceous Maastrichtian | Netherlands, Germany |
| Onychocella discors | (Stoliczka, 1872) | Cretaceous Maastrichtian | India |
| Onychocella dupliciter | Canu & Bassler, 1920 | Paleogene Eocene Priabonian | USA Alabama |
| Onychocella edusa | (d'Orbigny, 1851) | Cretaceous Maastrichtian | France |
| Onychocella eleanorae | Brydone, 1936 | Cretaceous Maastrichtian | England |
| Onychocella elliptica | Canu, 1910 | Neogene Miocene Burdigalian | France |
| Onychocella elongata | Levinsen, 1925 | Paleogene Paleocene Danian | Denmark |
| Onychocella eocoenica | Plaziat & Balavoine, 1965 | Paleogene Eocene | France |
| Onychocella eryx | (d'Orbigny, 1851) | Cretaceous Turonian | France |
| Onychocella falunica | Canu & Bassler, 1930 | Neogene Miocene Recent |
France Tunisia |
| Onychocella fimbriata | Canu & Bassler, 1929 | Paleogene Eocene Lutetian | Belgium |
| Onychocella flexuosa | (d'Orbigny, 1851) | Cretaceous Santonian | France |
| Onychocella formosa | (Giebel, 1848) | Cretaceous Santonian-Campanian | Germany |
| Onychocella francqana | (d'Orbigny, 1852) | Cretaceous Campanian | France |
| Onychocella galeata | (von Hagenow, 1839) | Cretaceous Maastrichtian | Germany, Denmar |
| Onychocella gaudryna | (d'Orbigny, 1852) | Cretaceous Campanian | France |
| Onychocella georgiana | Canu & Bassler, 1920 | Neogene Eocene Priabonian | USA (Georgia) |
| Onychocella gibbosa | (Marsson, 1887) | Cretaceous Maastrichtian | Germany, Denmark, England |
| Onychocella gibbosa weybournensis | (Brydone, 1930) | Cretaceous Campanian | England |
| Onychocella gibbosulum | (Brydone, 1936) | Cretaceous Campanian | England |
| Onychocella gimensis | (Brydone, 1936) | Cretaceous Maastrichtian Paleogene Paleocene Danian |
England, Denmark Denmark |
| Onychocella girondina | (d'Orbigny, 1851) | Cretaceous Maastrichtian | France |
| Onychocella gradua | Brydone, 1930 | Cretaceous Maastrichtian | England |
| Onychocella gravensis | (Brydone, 1936) | Cretaceous Santonian | England |
| Onychocella hantoniensis | Brydone, 1936 | Cretaceous Campanian | England, Germany |
| Onychocella heraclea | Brydone, 1930 | Cretaceous Campanian | England |
| Onychocella hercyna | Brydone, 1930 | Cretaceous Maastrichtian | England |
| Onychocella hermione | Brydone, 1930 | Cretaceous Coniacian-Santonian | England |
| Onychocella hermione protendens | Brydone, 1930 | Cretaceous Coniacian | England |
| Onychocella hersilia | Brydone, 1930 | Cretaceous Coniacian | England |
| Onychocella hesione | Brydone, 1930 | Cretaceous Santonian | England |
| Onychocella hestia | Brydone, 1930 | Cretaceous Santonian-Campanian | England |
| Onychocella hexagonalis | (Canu, 1922) | Cretaceous Maastrichtian | Madagascar |
| Onychocella hexagona | (Koschinsky, 1885) | Paleogene Eocene Lutetian | Germany |
| Onychocella? ignabergensis | (Hennig, 1892) | Cretaceous Campanian | Sweden |
| Onychocella incarcerata | (Brydone, 1936) | Cretaceous Campanian-Maastrichtian | England, Germany |
| Onychocella incrustata | Brydone, 1930 | Cretaceous Campanian | England |
| Onychocella inelegans | (Lonsdale, 1850) | Cretaceous Turonian-Campanian | England, France, Germany |
| Onychocella inelegans angliae | (Brydone, 1936) | Cretaceous Santonian-Campanian | England |
| Onychocella inelegans minuens | (Brydone, 1936) | Cretaceous Santonian-Maastrichtian | England |
| Onychocella inelegans testudinaria | (Brydone, 1936) | Cretaceous Coniacian | England |
| Onychocella insipiens | (Stoliczka, 1872) | Cretaceous Maastrichtian | India |
| Onychocella insueta | Favorskaya, 1980 | Late Cretaceous | Turkmenistan |
| Onychocella introversa | Brydone, 1936 | Cretaceous Coniacian-Campanian | England |
| Onychocella irregularis | (von Hagenow, 1839) | Cretaceous Maastrichtian | Europe |
| Onychocella irrostrata | (Brydone, 1936) | Cretaceous | England |
| Onychocella koninckiana | (von Hagenow, 1851) | Cretaceous Maastrichtian | Netherlands |
| Onychocella labiata | Pocta, 1892 | Cretaceous Cenomanian | Czech Rep. |
| Onychocella laciniosa | Canu & Bassler, 1920 | Paleogene Eocene Priabonian | SE USA |
| Onychocella lamarcki | (von Hagenow, 1851) | Cretaceous Maastrichtian | Netherlands, France |
| Onychocella lamellosa | Voigt, 1924 | Cretaceous Santonian-Campanian | Germany |
| Onychocella? lamellosa (Homonym) |
Gordon & Taylor, 1999 | Paleogene Paleocene | New Zealand Chatham Is. |
| Onychocella latilabris | (Reuss, 1872) | Cretaceous | Germany |
| Onychocella lanceolata | (Canu, 1919) | Paleogene Eocene | France |
| Onychocella lecointrei | Favorskaya, 1990 | Late Cretaceous | Uzbekistan |
| Onychocella linearis | Levinsen, 1925 | Cretaceous | Denmark, Germany |
| Onychocella levigata | (Canu & Bassler, 1920) | Paleogene Eocene-Oligocene | SE USA |
| Onychocella longaeva | Brydone, 1936 | Cretaceous Campanian | England |
| Onychocella marioni | Jullien, 1882) | Recent | E. Atlantic, Mediterranean |
| Onychocella marsupitium | (Brydone, 1936) | Cretaceous Santonian | England |
| Onychocella matrona | (von Hagenow, 1839) | Cretaceous Santonian-Maastrichtian | Netherlands, Germany, Denmark |
| Onychocella meijeri | Voigt, 1987 | Paleogene Neogene Danian | Belgium |
| Onychocella michaudiana | (d'Orbigny, 1850) | Cretaceous Cenomanian Turonian |
France Czech Rep |
| Onychocella microvicellata | Maryanska, 1969 | Cretaceous Maastrichtian | Poland |
| Onychocella mimosa | Brydone, 1930 | Cretaceous Maastrichtian | England |
| Onychocella minima | Ziko, 1985? | Paleogene Eocene Lutetian | Egypt |
| Onychocella minuscula | (Canu & Bassler, 1920) | Paleogene Eocene Priabonian | SE USA |
| Onychocella miscens | Brydone, 1930 | Cretaceous | England |
| Onychocella montlauri | Plaziat & Balavoine, 1965 | Neogene Eocene | France |
| Onychocella multa | Favorskaya, 1986 | Late Cretaceous | Turkmenistan |
| Onychocella narmadae | Guha, 1989 | Cretaceous Cenomanian-Turonian | India |
| Onychocella nerei | (d'Orbigny, 1851) | Cretaceous Senonian | France |
| Onychocella nimarensis | Guha, 1989 | Cretaceous Cenomanian | India |
| Onychocella norfolcia | Brydone, 1936 | Cretaceous Campanian | England |
| Onychocella novaki | (Brydone, 1910) | Cretaceous Maastrichtian | England |
| Onychocella novaki anglica | (Brydone, 1910) | Cretaceous Maastrichtian | England, Germany |
| Onychocella nysti | (von Hagenow, 1851) | Cretaceous Campanian-Maastrichtian | Europe |
| Onychocella obliqua | Guha & Senthil Nathan, 1990 | Cretaceous Maastrichtian | India |
| Onychocella obtecta | (Stoliczka, 1872) | Cretaceous Maastrichtian | India |
| Onychocella optabilis | (Stoliczka, 1872) | Cretaceous Maastrichtian | India |
| Onychocella oweni | (von Hagenow, 1851) | Cretaceous Maastrichtian | Netherlands |
| Onychocella pallakaveri | Guha & Senthil Nathan, 1990 | Cretaceous | India |
| Onychocella palpigera | (Brydone, 1912) | Cretaceous Campanian | England, Sweden |
| Onychocella parallela | Brydone, 1936 | Cretaceous Maastrichtian | England, Belgium |
| Onychocella parisiensis (Two homonyms?) |
(d'Orbigny, 1852) | Cretaceous | France |
| Onychocella parvicella | (Filiozat, 1907) | Cretaceous Santonian | France |
| Onychocella parvipora | Faura & Canu, 1916 | Paleogene Eocene Priabonian | Spain |
| Onychocella pendens | (Brydone, 1936) | Cretaceous Maastrichtian | England |
| Onychocella piriformis | (Goldfuss, 1826) | Cretaceous Maastrichtian | Netherlands, Germany |
| Onychocella pirum | Balavoine, 1956 | Cretaceous Maastrichtian | France |
| Onychocella pitniakensis | Favorskaya, 1980 | Late Cretaceous | Turkmenistan |
| Onychocella pockrandti | Voigt, 1975 | Cretaceous Santonian-Maastrichtian | Germany |
| Onychocella poulseni | Berthelsen, 1962 | Paleogene Paleocene Danian | Denmark |
| Onychocella precursor | (Brydone, 1936) | Cretaceous Maastrichtian | England |
| Onychocella procurrens | (Brydone, 1936) | Cretaceous Coniacian | England |
| Onychocella prominens | (Canu, 1907) | Paleogene Eocene Ypresian-Lutetian | France |
| Onychocella propinqua | (von Hagenow, 1851) | Cretaceous Maastrichtian | Netherlands |
| Onychocella pseudoirregularis | Voigt, 1924 | Cretaceous Santonian-Maastrichtian | Germany, Netherlands |
| Onychocella pseudoirregularis improcera | Voigt, 1924 | Cretaceous Santonian-Campanian | Germany |
| Onychocella pugeti | (Canu, 1907) | Paleogene Eocene Ypresian-Lutetian | France |
| Onychocella punctula | Brydone, 1936 | Cretaceous Maastrichtian | England |
| Onychocella quadrangularis | (d'Orbigny, 1852) | Cretaceous Coniacian | France |
| Onychocella quadraticola | Brydone, 1936 | Cretaceous Campanian | England |
| Onychocella quadrilatera | Voigt, 1930 | Cretaceous Maastrichtian | Denmark |
| Onychocella ravni | Berthelsen, 1962 | Paleogene Paleocene Danian | Denmark |
| 'Onychocella' recta | Voigt, 1957 | Cretaceous Maastrichian | Belgium |
| Onychocella regularis | (Chiplonkar, 1939) | Cretaceous Cenomanian-Turonian | India |
| Onychocella rimosa | (Marsson, 1887) | Cretaceous Maastrichtian | Germany, France, England |
| Onychocella rimosa superrimosa | Brydone, 1930 | Cretaceous | England |
| Onychocella roborata | Brydone, 1936 | Cretaceous Maastrichtian | England |
| Onychocella rothpletzi | (Canu, 1907) | Paleogene Eocene Ypresian-Lutetian | France |
| Onychocella rotundata | Voigt, 1930 | Cretaceous Maastrichtian | Netherlands |
| Onychocella royana | (d'Orbigny, 1851) | Cretaceous Maastrichtian | France |
| Onychocella rugosa | Guha & Senthil Nathan, 1990 | Cretaceous Maastrichtian | India |
| Onychocella schroederi | Voigt, 1924 | Cretaceous Santonian-Campanian | Germany |
| Onychocella sexangularis | (Goldfuss, 1826) | Cretaceous Maastrichtian | Netherlands |
| Onychocella simplex | (d'Orbigny, 1851) | Cretaceous Maastrichtian | France |
| Onychocella sheringensis | Brydone, 1936 | Cretaceous Campanian | England |
| Onychocella spinata | Favorskaya, 1980 | Cretaceous Maastrichtian | Turkmenistan |
| Onychocella spinifera | Voigt, 1981 | Cretaceous Maastrichtian | Netherlands |
| Onychocella stenostoma | (Reuss, 1848) | Neogene Miocene | Austria, Morocco, Algeria |
| Onychocella stigmatophora | (Goldfuss, 1826) | Cretaceous Maastrichtian | Netherlands |
| Onychocella subaegon | Favorskaya, 1980 | Late Cretaceous | Turkmenistan |
| Onychocella subglobosa | Brydone, 1936 | Cretaceous Campanian | England |
| Onychocella subirregularis | Voigt, 1959 | Cretaceous Maastrichtian | Germany |
| Onychocella subpalpigera | Voigt, 1985 | Cretaceous Coniacian-Santonian | France |
| Onychocella subpyriformis | (d'Archiac, 1846) | Paleogene Eocene Lutetian-Priabonian | France, England, Italy, Egypt |
| Onychocella substrumulosa | Brydone, 1930 | Cretaceous Campanian | England |
| Onychocella subsymmetrica | Canu & Bassler, 1929 | Recent Neogene Miocene, Pleistocene |
Philippines Japan |
| Onychocella sussexiensis | (Brydone, 1912) | Cretaceous Coniacian | England |
| Onychocella tchingeldensis | Favorskaya, 1980 | Late Cretaceous | Turkmenistan |
| Onychocella testudinaria | Brydone, 1936 | Cretaceous Coniacian | England |
| Onychocella tortuosa | (Quenstedt, 1885) | Cretaceous Santonian? | Germany |
| Onychocella transversa | Canu, 1910 | Neogene Miocene Burdigalian | France |
| Onychocella trimensis | Brydone, 1936 | Cretaceous Maastrichtian | England |
| Onychocella turonica | (Canu, 1900) | Cretaceous Maastrichtian | France |
| Onychocella vectense | (Brydone, 1936) | Cretaceous | England |
| Onychocella vibraculifera | Neviani, 1895 | Recent | Mediterranean |
| Onychocella waageni | (Pergens, 1893) | Cretaceous Maastrichtian | Belgium |
| Onychocella welteri | (Voigt, 1930) | Cretaceous Santonian | Germany |
| Onychocella xiphia | (d'Orbigny, 1852) | Cretaceous Maastrichtian | France |
This information is based upon various sources, but no personal knowledge. I am indebted to the late Alan Horowitz for his compilation, and to Dr. J. Pachut. I have reassigned many species of Rhagasostoma to Onychocella without any critical review. Many of the species of d'Orbigny need further revision.
I would be grateful for corrections to, or critical reviews of this information. This is not a 'final' version (an impossible ideal), but a working document.
Onychocella page at NMITA
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