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Squalea

Chondrichthyes

Taxonomy
Squalea was named by Shirai (1996).

It was reranked as the unranked clade Squalea by Kriwet (2005).

It was assigned to Neoselachii by Delsate et al. (2002), Delsate (2003) and Underwood and Ward (2004); to Neoselachii by Kriwet (2005); and to Elasmobranchii by Carnevale (2007).

Subtaxa
Hypnosqualea, Microtoxodus
Sister taxa
Hypnosqualea

Synonymy list
YearName and author
1996Squalea Shirai
2002Squalea Delsate et al. p. 12
2003Squalea Delsate p. 9
2004Squalea Underwood and Ward p. 474
2005Squalea Kriwet
2007Squalea Carnevale p. 6

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
RankNameAuthor
classChondrichthyes
subclassElasmobranchiiBonaparte 1838
infraclassEuselachii()
—NeoselachiiCompagno 1977
superorderSqualeaShirai 1996
superorderSqualeaShirai 1996

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.

Superor. †Squalea Shirai 1996
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Superor. †Hypnosqualea Carvalho and Maisey 1996
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Fm. †Protospinacidae Woodward 1919
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G. †Breviacanthus Maisey 1976
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†Breviacanthus brevis Philips 1871
G. †Protospinax Woodward 1919
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†Protospinax annectans Woodward 1919
†Protospinax bilobatus Underwood and Ward 2004
†Protospinax carvalhoi Underwood and Ward 2004
†Protospinax magnus Underwood and Ward 2004
†Protospinax planus Underwood 2002
G. †Microtoxodus Delsate 2003
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†Microtoxodus gulakmani Delsate 2003
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: marinesubp
Locomotion: actively mobilec
Life habit: nektonicc
Diet: carnivorec
Created: 2004-08-17 13:49:23
Modified: 2009-12-13 03:31:01
Source: c = class, subp = subphylum
References: Carroll 1988, Wagner 2023

Age range: base of the Late/Upper Toarcian to the top of the Early/Lower Valanginian or 180.10000 to 136.40000 Ma

Collections (24 total)


Time interval Ma Country or state Original ID and collection number
Toarcian182.7 - 174.1Germany Protospinax sp., Microtoxodus gulakmani (148936)
Levesquei182.0 - 175.6Luxembourg Protospinax sp., Microtoxodus gulakmani (148935)
Variabilis182.0 - 175.6Luxembourg Protospinax sp. (141383 141384)
Late/Upper Toarcian180.1 - 175.6Germany Protospinax sp. (139230)
Thouarsense180.1 - 175.6Luxembourg Protospinax sp. (141386 141387 141389)
Early/Lower Bajocian171.6 - 168.4France (Grand Est) Protospinax bilobatus, Protospinax magnus (179498)
Laeviuscula171.6 - 167.7France Protospinax carvalhoi (179497)
Bathonian168.3 - 166.1United Kingdom (England) Protospinax bilobatus (91450)
Bathonian168.3 - 166.1United Kingdom Nemacanthus brevis (131844)
Late/Upper Bathonian167.7 - 164.7United Kingdom (England) Breviacanthus brevis (91449)
Middle Bathonian - Late/Upper Bathonian167.7 - 164.7Poland Protospinax sp. 1 (141283) Protospinax sp. 2 (141286)
Callovian166.1 - 163.5United Kingdom Protospinax annectans (137185)
Late/Upper Callovian164.7 - 161.2Poland Protospinax sp. 1, Protospinax sp. 2 (117993)
Late/Upper Callovian164.7 - 161.2Luxembourg Protospinax sp. 1, Protospinax sp. 2, Protospinax annectans (91447)
Middle Callovian164.7 - 161.2Poland Protospinax sp. 1, Protospinax sp. 2 (97035)
Oxfordian163.5 - 157.3Germany Protospinax lochensteinensis (137169)
Late/Upper Oxfordian161.2 - 155.7Spain Protospinax sp. (151900)
Late/Upper Kimmeridgian - Early/Lower Tithonian155.7 - 145.0United Kingdom (England) Protospinax planus (140224)
Early/Lower Tithonian150.8 - 145.0Germany Protospinax annectans (121197)
Early/Lower Valanginian140.2 - 136.4France (Gard) Protospinax sp. (213631)