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Gastropoda - Opisthobranchia

Synonymy list
YearName and author
1883Cephalaspidea Fischer
1964Cephalaspidea Sohl p. 384
1984Cephalaspidea Squires p. 39
1987Cephalaspidea Squires p. 53
1987Cephalaspidea Ward and Blackwelder p. 132
1988Cephalaspidea Squires p. 17
1990Cephalaspidea Beu et al. p. 421
1998Cephalaspidea Beesley p. 942
2001Cephalaspidea Todd
2002Cephalaspida Sepkoski, Jr.
2007Cephalaspidea Harzhauser p. 112
2020Cephalaspidea Wagner

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EubilateriaAx 1987
classGastropodaCuvier 1797
orderOpisthobranchia(Milne-Edwards 1848)
orderCephalaspideaFischer 1883
orderCephalaspideaFischer 1883

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.

No diagnoses are available
No measurements are available
Composition: aragonitec
Locomotion: actively mobilec
Life habit: epifaunalc
Diet: omnivoreo
Vision: limitedc
Comments: Among opisthobranch gastropods the Cephalaspidea show the greatest diversity of feeding strategies, ranging from herbivory (browsing species, ..o
Created: 2009-05-20 09:39:36
Modified: 2009-05-20 11:39:36
Source: o = order, c = class
Reference: Kiessling 2004

Age range

Maximum range based only on fossils: base of the Bathonian to the top of the Holocene or 168.30000 to 0.00000 Ma
Minimum age of oldest fossil (stem group age): 166.1 Ma

Collections (1621 total)

Oldest occurrences

Time interval Ma Country or state Original ID and collection number
Bathonian168.3 - 166.1Saudi Arabia Cylichna sp. (48447)
Callovian166.1 - 163.5Germany Retusa microconcha (58203)
Callovian166.1 - 163.5Yemen (Wadi Hajar) Bulla sp. (2600)
Callovian - Oxfordian166.1 - 157.3Somalia Bulla macfadyeni (93020)
Early/Lower Callovian - Middle Callovian164.7 - 161.2Poland Retusa microconcha (58264)
Middle Callovian164.7 - 161.2Israel Retusa plicifer (99129 99130 99131)
Valanginian139.8 - 132.9Switzerland Bulla avellana, Bulla dactylus, Bulla jaccardi (2225) Bulla jaccardi (2221 2247)
Valanginian139.8 - 132.9France Bulla etalloni (2220) Bulla jaccardi (2222)
Barremian129.4 - 125.0France (DrĂ´me) Acteocina tenuistriata, Cylichna urgonensis (177726)
Early/Lower Aptian125.45 - 122.46Switzerland Bulla tombeckiana (2232)
Aptian125.0 - 113.0France Bulla urgonensis (2186)
Aptian125.0 - 113.0Switzerland Bulla urgonensis (2188)
Late/Upper Albian105.3 - 99.6United Kingdom (England) Cylichna urgonensis (6280)
Cenomanian100.5 - 93.9USA (Texas) Cylichna sp. (2120 6595)
Cenomanian100.5 - 93.9USA (California) Cylichnina sp. (167600 185726) Scaphander sp. (167602)
Early/Lower Cenomanian99.6 - 93.5USA (California) Cylichna andersoni (1794 1804) Cylichnina sp. (167599)
Late/Upper Cenomanian99.6 - 93.5USA (Arizona) Cylichna sp. (54165)
Late/Upper Cenomanian99.6 - 93.5USA (Utah) Cylichna sp. (3325)
Middle Cenomanian99.6 - 93.5Australia (Northern Territory) Cylichna intermissia (13946)
Turonian - Santonian93.9 - 83.6USA (California) Bullaria nortonensis (80942)