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Gastropoda - Opisthobranchia

Synonymy list
YearName and author
1848Opisthobranchia Milne-Edwards
1904Opisthobranchiata Martin p. 131
1960Opisthobranchia Knight et al. p. 321
1989Opisthobranchia Squires p. 444
1998Opisthobranchia Beesley p. 915
1999Opisthobranchia Squires p. 22
2002Opisthobranchia Sepkoski, Jr.
2007Opisthobranchia Harzhauser p. 112

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

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
Vision: limitedc
Created: 2004-02-29 11:40:59
Modified: 2010-02-11 01:35:02
Source: c = class
Reference: Kiessling 2004

Age range

Maximum range based only on fossils: base of the Rootsikula to the top of the Holocene or 426.20000 to 0.00000 Ma
Minimum age of oldest fossil (stem group age): 423.0 Ma

Collections (2029 total)

Oldest occurrences

Time interval Ma Country or state Original ID and collection number
Wenlock - Ludlow433.4 - 423.0United Kingdom (Scotland) Ateleaspis sp. (26906)
Ludlow427.4 - 423.0United Kingdom (Scotland) Ateleaspis sp. (26896)
Rootsikula426.2 - 422.9Norway Ateleaspis sp. (14308 26927 26928)
Pridoli423.0 - 419.2United Kingdom (England) Anaspidea indet. (26917)
Middle Frasnian382.4 - 379.5France (Alsace) Clionidae sp. (65766)
Kungurian279.3 - 272.3Malaysia (Perak) Spirocyclina sp. (62131)
Carnian237.0 - 228.0Hungary (Bakony) Spirocyclina eucycla (203197 203199 203276)
Carnian237.0 - 228.0Italy Ampezzamilda aialensis (164191)
Late/Upper Triassic237.0 - 201.3USA (Alaska) Spirocyclina sp. (112288)
Julian235.0 - 232.0Italy Ampezzogyra schroederi (38164) Spirocyclina eucycla (34692 69661 144632 144633) Turritella eucycla (144928)
Jurassic - Late/Upper Jurassic201.3 - 145.0Tunisia Palaeohydatina sp. (13812)
Sinemurian199.3 - 190.8Italy Ceritella apenninica (80016)
Late/Upper Sinemurian196.5 - 189.6Chile Pseudonerinea sp. (95387)
Spinatum189.6 - 183.0Germany Carboninia sp. (152175)
Late/Upper Toarcian180.1 - 175.6Germany Carboninia sp. (75984)
Middle Jurassic174.1 - 163.5United Kingdom (Gloucestershire) Ceritella morrisea (204059)
Late/Upper Bajocian - Early/Lower Bathonian171.6 - 164.7Poland Carboninia sp. (58282)
Late/Upper Bajocian - Early/Lower Bathonian171.6 - 164.7France Ceritellopsis lycettea (58416)
Early/Lower Bajocian - Late/Upper Oxfordian171.6 - 155.7Romania (Brasov) Ceritella sp. (81442)
Bajocian170.3 - 168.3USA (Wyoming) Ceritella sp. (167064)