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Akera

Gastropoda - Opisthobranchia - Akeridae

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).

Synonymy list
YearName and author
1776Akera Muller
1853Bulla (Akera) Gould p. 375
2001Akera Squires p. 15
2002Akera Sepkoski

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
RankNameAuthor
phylumMollusca
classGastropoda
orderOpisthobranchia(Milne-Edwards 1848)
orderTectibranchia
familyAkeridaeMazzarelli 1891
genusAkeraMuller 1776

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
show all | hide all
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
Composition: aragonitec
Locomotion: actively mobilec
Life habit: epifaunalc
Vision: limitedc
Created: 2004-02-29 11:40:59
Modified: 2010-02-11 01:35:02
Source: c = class
Reference: Kiessling 2004

Age range: base of the Callovian to the top of the Late/Upper Pleistocene or 166.10000 to 0.01170 Ma

Collections (31 total)


Time interval Ma Country or state Original ID and collection number
Bajocian - Early/Lower Bathonian170.3 - 164.7Saudi Arabia A. sp. (45303)
Callovian166.1 - 163.5Saudi Arabia A. sp. (45549)
Callovian166.1 - 163.5Tanzania A. tanganyicensis (36350)
Late/Upper Albian105.3 - 99.6Angola A. gregoryi (210739)
Early/Lower Cenomanian99.6 - 93.5Egypt A. thevestensis (114872)
Middle Cenomanian99.6 - 93.5Egypt A. thevestensis (140539)
Late/Upper Turonian93.5 - 89.3Brazil (Sergipe) A. sp. (143534)
Late/Upper Campanian83.5 - 70.6USA (Texas) A. constricta (7481)
Danian66.0 - 61.6France A. sp. (20816)
Ypresian56.0 - 47.8USA (California) A. maga (51942) A. sp. (167604)
Ypresian56.0 - 47.8Pakistan A. pseudodesioi (183835 183884 183926 183927 183933 184065)
Middle Eocene48.6 - 37.2Indonesia A. striatella (79524)
Lutetian47.8 - 41.3USA (California) A. maga (8012)
Lutetian47.8 - 41.3Pakistan A. pseudodesioi (183965)
Lutetian47.8 - 41.3USA (Texas) A. sp. (205417) A. texana (90455)
Bartonian41.3 - 38.0Romania A. striatella (101813 101821)
Bartonian41.3 - 38.0Colombia (Bolivar) A. bolivarensis (3312)
Bartonian41.3 - 38.0Colombia A. bolivarensis (88278)
Priabonian38.0 - 33.9Romania A. striatella (102019)
Early/Lower Oligocene33.9 - 28.4Italy A. striatella (81044)
Rupelian33.9 - 28.1Pakistan Acera narica (77159)
Aquitanian23.03 - 20.44France A. bullata (74861)
Late/Upper Pleistocene0.126 - 0.0117Australia (Western Australia) A. soluta (63208)