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Akera
Taxonomy
Akera was named by Muller (1776) [Sepkoski's age data: J Call-u R Sepkoski's reference number: 614]. It is extant.
It was reranked as Bulla (Akera) by Gould (1853).
It was assigned to Bulla by Gould (1853); to Akeridae by Squires (2001); and to Anaspidea by Sepkoski (2002).
It was reranked as Bulla (Akera) by Gould (1853).
It was assigned to Bulla by Gould (1853); to Akeridae by Squires (2001); and to Anaspidea by Sepkoski (2002).
Species
Species lacking formal opinion data
Synonymy list
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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. Akera Muller 1776
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†Akera bolivarensis Anderson 1928
†Akera constricta Stephenson 1941
†Akera gregoryi Newton 1917
†Akera maga Vokes 1939
†Akera narica Vredenburg 1925
†Akera pseudodesioi Eames 1952
†Akera texana Aldrich 1911
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: c = class | |||||
| Reference: Kiessling 2004 | |||||
Age range: base of the Bajocian to the top of the Late/Upper Pleistocene or 170.90000 to 0.01170 Ma
Collections (31 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Bajocian - Early/Lower Bathonian | Saudi Arabia | A. sp. (45303) | |
| Callovian | Saudi Arabia | A. sp. (45549) | |
| Callovian | Tanzania | A. tanganyicensis (36350) | |
| Late/Upper Albian | Angola | A. gregoryi (210739) | |
| Early/Lower Cenomanian | Egypt | A. thevestensis (114872) | |
| Middle Cenomanian | Egypt | A. thevestensis (140539) | |
| Late/Upper Turonian | Brazil (Sergipe) | A. sp. (143534) | |
| Late/Upper Campanian | USA (Texas) | A. constricta (7481) | |
| Danian | France | A. sp. (20816) | |
| Ypresian | USA (California) | A. maga (51942) A. sp. (167604) | |
| Ypresian | Pakistan | A. pseudodesioi (183835 183884 183926 183927 183933 184065) | |
| Lutetian | USA (California) | A. maga (8012) | |
| Lutetian | Pakistan | A. pseudodesioi (183965) | |
| Lutetian | USA (Texas) | A. sp. (205417) A. texana (90455) | |
| Middle Eocene | Indonesia | A. striatella (79524) | |
| Bartonian | Colombia (Bolivar) | A. bolivarensis (3312) | |
| Bartonian | Colombia | A. bolivarensis (88278) | |
| Bartonian | Romania | A. striatella (101813 101821) | |
| Priabonian | Romania | A. striatella (102019) | |
| Early/Lower Oligocene | Italy | A. striatella (81044) | |
| Rupelian | Pakistan | Acera narica (77159) | |
| Aquitanian | France | A. bullata (74861) | |
| Late/Upper Pleistocene | Australia (Western Australia) | A. soluta (63208) |