| Freshwater |
 |
| Potamocypris sp. |
| ?-Recent |
| Mooghaun Lough, County Clare, Eire |
| ~600 microns right valve SEM |
 |
| Cyclocypris sp. |
| ?-Recent |
| Mooghaun Lough, County Clare, Eire |
| ~500 microns left valve SEM |
 |
| Cypria ophtalmica (Jurine) |
| ?-Recent |
| Mooghaun Lough, County Clare, Eire |
| 650 microns left valve SEM |
 |
| Ilyocypris sp. |
| ?-Recent |
| Mooghaun Lough, County Clare, Eire |
| 800 microns right valve SEM |
 |
| Metacypris cordata Brady and Robertson |
| ?-Recent |
| Mooghaun Lough, County Clare, Eire |
| 520 microns right valve SEM |
 |
| Darwinula stevensoni Brady and Robertson |
| ?-Recent |
| Mooghaun Lough, County Clare, Eire |
| 780 microns right valve SEM |
 |
| Cyclocypris ovum (Jurine) |
| ?-Recent |
| Mooghaun Lough, County Clare, Eire |
| 480 microns right valve SEM |
 |
| Limnocythere sanctipatricii (Brady and Robertson) |
| ?-Recent |
| Mooghaun Lough, County Clare, Eire |
| 850 microns female left valve SEM |
 |
| Ilyocypris sp. |
| ?-Recent |
| Mooghaun Lough, County Clare, Eire |
| 750 microns right valve SEM |
 |
| Cyclocypris laevis Muller |
| ?-Recent |
| Mooghaun Lough, County Clare, Eire |
| 580 microns dorsal view carapace SEM |
 |
| Pseudocandona rostrata (Brady and Norman) |
| ?-Recent |
| Mooghaun Lough, County Clare, Eire |
| 1000 microns left valve SEM |
 |
| Pseudocandona rostrata (Brady and Norman) |
| ?-Recent |
| Mooghaun Lough, County Clare, Eire |
| 1000 microns left valve internal view SEM |
 |
| Candona candida (Muller) |
| ?-Recent |
| Mooghaun Lough, County Clare, Eire |
| 1100 microns female right valve SEM |
 |
| Herpetocypris sp. |
| ?-Recent |
| Mooghaun Lough, County Clare, Eire |
| 2000 microns female right valve SEM |
 |
| Herpetocypris reptans (Baird) |
| ?-Recent |
| Mooghaun Lough, County Clare, Eire |
| 2000 microns internal view right valve SEM |
 |
| Limnocythere inopinata (Baird) |
| ?-Recent |
| Mooghaun Lough, County Clare, Eire |
| 630 microns female left valve SEM |
 |
| Limnocythere sanctipatricii (Brady and Robertson) |
| ?-Recent |
| Mooghaun Lough, County Clare, Eire |
| 840 microns female left valve SEM |
 |
| Candona neglecta (Sars) |
| ?-Recent |
| Merja Sidi Bou Rhaba, Northwestern Morocco |
| 1300 microns SEM |
 |
| Cyprideis torosa (Jones) |
| ?-Recent |
| Merja Sidi Bou Rhaba, Northwestern Morocco |
| SEM |
 |
| Cyprideis torosa (Jones) detail of sieve pores with setae |
| ?-Recent |
| Merja Sidi Bou Rhaba, Northwestern Morocco |
| SEM |
 |
| Potamocypris sp. (Brady) |
| ?-Recent |
| Merja Sidi Bou Rhaba, Northwestern Morocco |
| SEM |
 |
| Ilyocypris gibba (Ramdohr) |
| ?-Recent |
| Merja Sidi Bou Rhaba, Northwestern Morocco |
| 820 microns SEM |
|
| Marine |
 |
| Heterocyprideis sorbyana (Jones) |
| ?-Recent |
| Skagen Core, Jutland, Denmark |
| adult right valve SEM |
 |
| Heterocyprideis sorbyana (Jones) |
| ?-Recent |
| Skagen Core, Jutland, Denmark |
| adult right valve internal view SEM |
 |
| Rabilimis mirabilis Brady |
| ?-Recent |
| Skagen Core, Jutland, Denmark |
| adult left valve SEM |
 |
| Cytheropteron pseudomontrosiense Whatley and Masson |
| ?-Recent |
| Skagen Core, Jutland, Denmark |
| adult left valve internal view SEM |
 |
| Cytheropteron pseudomontrosiense Whatley and Masson |
| ?-Recent |
| Skagen Core, Jutland, Denmark |
| juvenile left valve SEM |
 |
| Normanicythere leioderma (Norman) |
| ?-Recent |
| Skagen Core, Jutland, Denmark |
| adult left valve SEM |
 |
| Cluthia cluthae (Brady, Crosskey and Robertson) |
| ?-Recent |
| Skagen Core, Jutland, Denmark |
| adult right valve SEM |
 |
| Bairdia subdeltoidea (von Munster) |
| Lower Miocene-Pliocene |
| Pissouri, Cyprus, Eastern Mediterranean |
| adult right valve SEM |
 |
| Cistacythereis pokornyi hellenica Uliczny |
| Pliocene-Recent |
| Pissouri, Cyprus, Eastern Mediterranean |
| adult left valve SEM |
 |
| Australoecia poteroacuta Coles and Whately |
| Upper Eocene-Upper Oligocene |
| Pissouri, Cyprus, Eastern Mediterranean |
| right valve SEM |
 |
| Eucytherura complexa (Brady) |
| Pliocene-Recent |
| Pissouri, Cyprus, Eastern Mediterranean |
| right valve SEM |
 |
| Aurila punctata punctata (von Munster) |
| Late Miocene-Recent |
| Pissouri, Cyprus, Eastern Mediterranean |
| left valve SEM |
 |
| Cythere texana Stadnichenko |
| ?Eocene? |
| Pin Oak Creek, Bastrop County, Texas, USA |
| left valve (femle) SEM |
 |
| Cythere texana Stadnichenko |
| ?Eocene? |
| Pin Oak Creek, Bastrop County, Texas, USA |
| left valve internal view (male) SEM |
 |
| Cytheridea (Clithrocytheridea) cf. oliveri (Cushman) |
| ?Eocene? |
| Pin Oak Creek, Bastrop County, Texas, USA |
| left valve (female) SEM |
 |
| Cytheridea (Clithrocytheridea) cf. oliveri (Cushman) |
| ?Eocene? |
| Pin Oak Creek, Bastrop County, Texas, USA |
| left valve internal view (female) SEM |
 |
| Semicytherura Sp. |
| Late Palaeocene |
| Itori Borehole, Eastern Dahomey Basin, Nigeria |
| 560 microns (length) SEM |
 |
| Paleocosta olurebei (Reyment) |
| Late Palaeocene |
| Araromi Borehole, Eastern Dahomey Basin, Nigeria |
| 760 microns (length) SEM |
 |
| Buntonia ioruba Reyment |
| Late Maastrchtian-Late Palaeocene |
| Araromi Borehole, Eastern Dahomey Basin, Nigeria |
| 590 microns (length) right valve female SEM |
 |
| Stigmatocythere teiskotensis (Apostolescu) |
| Palaeocene |
| Araromi Borehole, Eastern Dahomey Basin, Nigeria |
| 810 microns (length) ventral view female SEM |
 |
| Costa levigata |
| Palaeocene |
| Itori Borehole, Eastern Dahomey Basin, Nigeria |
| 780 microns (length) left valve female SEM |
 |
| Actinocythereis asanmamoi Reyment |
| Late Palaeocene |
| Gebekebo Borehole, Eastern Dahomey Basin, Nigeria |
| 660 microns (length) left valve internal view female SEM |
 |
| Brachycythere armata Reyment |
| Late Maastrichtian (latest Cretaceous) |
| Araromi Borehole, Eastern Dahomey Basin, Nigeria |
| 810 microns (length) dorsal view SEM |
 |
| Brachycythere armata Reyment |
| Late Maastrichtian (latest Cretaceous) |
| Araromi Borehole, Eastern Dahomey Basin, Nigeria |
| 810 microns (length) ventral view SEM |
 |
| Parascypris sp. |
| Late Maastrichtian (latest Cretaceous) |
| Araromi Borehole, Eastern Dahomey Basin, Nigeria |
| 960 microns (length) ventral view SEM |
 |
| Phacorhabdotus pokornyi Paulson |
| Late Cretaceous-Palaeocene |
| Eastern Gulf Coast, U.S.A |
| 580 microns (length) left valve SEM |
 |
| Cytherelloidea crafti Sexton |
| Late Cretaceous? |
| Eastern Gulf Coast, U.S.A |
| 700 microns (length) left valve SEM |
 |
| Bythocypris windhami Butler and Jones |
| Early Cretaceous-Recent? |
| Eastern Gulf Coast, U.S.A |
| 920 microns (length) left valve SEM |
 |
| Carinocythereis priddyi Smith |
| Cretaceous? |
| Eastern Gulf Coast, U.S.A |
| 670 microns (length) left valve SEM |
 |
| Cythereis dallasensis Alexander |
| Cretaceous? |
| Eastern Gulf Coast, U.S.A |
| 840 microns (length) left valve SEM |
 |
| Antibythocypris bipunctata |
| Maastrichtian? |
| Eastern Gulf Coast, U.S.A |
| 360 microns (length) left valve SEM |
 |
| Antibythocypris bipunctata |
| Maastrichtian? |
| Eastern Gulf Coast, U.S.A |
| 360 microns (length) internal view right valve SEM |
 |
| Cytheropteron gaudaloupense Crane |
| Cretaceous-Recent? |
| Eastern Gulf Coast, U.S.A |
| 660 microns (length) left valve SEM |
 |
| Cytheropteron furcalatum Alexander |
| Cretaceous-Recent? |
| Eastern Gulf Coast, U.S.A |
| 680 microns (length) SEM |
 |
| Brachycythere ledoforma porosa Crane |
| Cretaceous-Recent? |
| Eastern Gulf Coast, U.S.A |
| 680 microns (length) SEM |
 |
| Cytheropteron harrissi Skinner |
| Cretaceous-Recent? |
| Eastern Gulf Coast, U.S.A |
| 690 microns (length) SEM |
 |
| Ovocytheridea reniformis van den Bold |
| Cenomanian-Turonian (Cretaceous) |
| Nkalagu Borehaole, Eastern Dahomey Basin, Nigeria |
| 1110 microns (length) SEM |
 |
| Schuleridea kellawaysii |
| Bathonian-Callovian (Jurassic) |
| North Leigh Borehole, Oxfordshire, U.K |
| 590 microns (length) internal view left valve SEM |
 |
| Nophrecythere cruciata intermedia (Lutze) |
| Callovian (Jurassic) |
| Cumnor, Oxfordshire, U.K |
| 690 microns (length) left valve SEM |
 |
| Polycope plumhoffi Bate and Coleman |
| Hettangian-Bathonian (Jurassic) |
| Trunch Borehole, Norfolk, U.K |
| 250 microns (length) SEM |
 |
| Nanacythere minor Michelsen |
| Sinemurian (Jurassic) |
| De Lutte borehole, Eastern Netherlands |
| 310 microns (length) left valve SEM |
 |
| Gramannicythere bachi bachi (Gramann) |
| Sinemurian-Lower Pliensbachian (Jurassic) |
| Trunch Borehole, Norfolk, U.K |
| 340 microns (length) right valve SEM |
 |
| Gramannicythere bachi bachi (Gramann) |
| Sinemurian-Lower Pliensbachian (Jurassic) |
| Trunch Borehole, Norfolk, U.K |
| 340 microns (length) internal view right valve SEM |
 |
| Liasina lanceolata (Apostolescu) |
| Upper Sinemurian-Lower Toarcian (Jurassic) |
| De Lutte borehole, Eastern Netherlands |
| 680 microns (length) right side SEM |
 |
| Kinkelinella intermedia (Gramann) |
| Sinemurian (Jurassic) |
| Trunch Borehole, Norfolk, U.K |
| 640 microns (length) left valve SEM |
 |
| Kinkelinella intermedia (Gramann) |
| Sinemurian (Jurassic) |
| De Lutte borehole, Eastern Netherlands |
| 450 microns (length) female carapace SEM |
 |
| Rhombocythere penarthensis Anderson |
| Norian Rhaetian (Triassic) |
| Well 6608/11-1 Norweigen North Sea |
| 740 microns (length) internal view right valve SEM |
 |
| Rhombocythere penarthensis Anderson |
| Norian Rhaetian (Triassic) |
| Well 6608/11-1 Norweigen North Sea |
| 740 microns (length) left valve SEM |
