Semieschara d'Orbigny, 1852

Type species: Semieschara flabellata d'Orbigny, 1852

Now considered as a subjective synonym of Onychocella. (Taylor et al 2018)

This genus includes the species:

Semieschara accrescens	Brydone, 1936	Late Cretaceous Maastrichtian	England	WoRMS 1408195
Semieschara acuum	Brydone, 1936	Late Cretaceous Campanian	France	WoRMS 1408196
Semieschara aequipartita	Brydone, 1936	Late Cretaceous Maastrichtian	England	WoRMS 1408197
Semieschara alumensis	Brydone, 1936	Late Cretaceous Campanian	France	WoRMS 1408198
Semieschara arborea (Status ?)	Beissel, 1865	Late Cretaceous Maastrichtian	Germany	WoRMS 1408199
Semieschara arrensis	Brydone, 1936	Late Cretaceous Campanian	France	WoRMS 1408200
Semieschara cattoniana	Brydone, 1936	Late Cretaceous Campanian	France	WoRMS 1408201
Semieschara? cenomana	(Lecointre, 1912)	Late Cretaceous Cenomanian	France	WoRMS 1413689
Semieschara clausula	Brydone, 1936	Late Cretaceous Coniacian-Santonian	England	WoRMS 1408202
Semieschara crassa	Beissel, 1865	Late Cretaceous Maastrichtian	Germany	WoRMS 1408203
Semieschara disparilis	d'Orbigny, 1852	Late Cretaceous Campanian	France	WoRMS 1408204
Semieschara flabellata	d'Orbigny, 1852	Late Cretaceous Turonian	France	WoRMS 1408205
Semieschara glavensis	Brydone, 1936	Late Cretaceous Campanian	England	WoRMS 1408206
Semieschara globator	Brydone, 1936	Late Cretaceous Maastrichtian	England	WoRMS 1408207
Semieschara hartfordensis	Brydone, 1936	Late Cretaceous Campanian	England	WoRMS 1408208
Semieschara henrici	Brydone, 1936	Late Cretaceous Campanian	England	WoRMS 1408209
Semieschara inclinata	Brydone, 1936	Late Cretaceous Campanian	England	WoRMS 1408210
Semieschara irregularis	d'Orbigny, 1852	Late Cretaceous Campanian	France	WoRMS 1408211
Semieschara latepatens	Brydone, 1936	Late Cretaceous Campanian	England	WoRMS 1408212
Semieschara mani	Guha, 1989	Late Cretaceous Cenomanian-Turonian	India	WoRMS 1408213
Semieschara microporina	Brydone, 1936	Late Cretaceous Campanian	England	WoRMS 1408214
Semieschara mundesleiensis (Status ?)	Brydone, 1906	Late Cretaceous Maastrichtian	England	WoRMS 1408215
Semieschara normaniana	d'Orbigny, 1852	Late Cretaceous Coniacian	France	WoRMS 1408216
Semieschara norvicia	Brydone, 1936	Late Cretaceous Campanian	England	WoRMS 1408217
Semieschara norvicia carisiana	Brydone, 1936	Late Cretaceous Campanian	France	WoRMS 1415035
Semieschara peropaca	Brydone, 1936	Late Cretaceous Maastrichtian	England	WoRMS 1408218
Semieschara? protecta	(Koschinsky, 1885)	Paleogene Eocene Lutetian	Germany	WoRMS 1413690
Semieschara quadriconvexa	Brydone, 1936	Late Cretaceous Maastrichtian	England	WoRMS 1408219
Semieschara rottingensis	Brydone, 1936	Late Cretaceous Campanian	England	WoRMS 1408220
Semieschara scopulorum	Brydone, 1936	Late Cretaceous Campanian	England	WoRMS 1408221
Semieschara? sheringense	(Brydone, 1930)	Late Cretaceous Campanian	England	WoRMS 1413691
Semieschara subclavata	Marsson, 1887	Late Cretaceous Maastrichtian	Germany	WoRMS 1408222
Semieschara subpunctulata	Brydone, 1936	Late Cretaceous Campanian	England	WoRMS 1408223
Semieschara tertia	Brydone, 1936	Late Cretaceous Turonian	England	WoRMS 1408224
Semieschara tridentata	Brydone, 1936	Late Cretaceous Campanian	England	WoRMS 1408225
Semieschara tuftonensis	Brydone, 1936	Late Cretaceous Santonian	England	WoRMS 1408226
Semieschara tumefacta	Brydone, 1936	Late Cretaceous Campanian	England	WoRMS 1408227
Semieschara walthamensis	Brydone, 1936	Late Cretaceous Campanian	England	WoRMS 1408228
Semieschara woodsi (Status ?)	Brydone, 1906	Late Cretaceous Santonian-Campanian	Germany	WoRMS 1408229

Many species identified with Rhagasostoma have been referred to Onychocella; others in the list above are referred from Rhagasostoma pending further revision.

Semieschara arborea at MNHN, Paris.
Semieschara normaniana at MNHN, Paris.