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Squaliolus

Chondrichthyes - Dalatiidae

Taxonomy
Squaliolus was named by Smith and Radcliffe (1912) [Sepkoski's age data: T Mi-l-u R Sepkoski's reference number: 884]. It is extant. Its type is Squaliolus laticaudus.

It was assigned to Scymnorhinidae by Jordan (1963); to Squaliformes by Sepkoski (2002); and to Dalatiidae by Cahuzac et al. (2007) and Underwood and Schlogl (2013).

Species
S. gasconensis, S. laticaudus (type species), S. schaubi

Synonymy list
YearName and author
1912Squaliolus Smith and Radcliffe
1963Squaliolus Jordan p. 602
2002Squaliolus Sepkoski
2007Squaliolus Cahuzac et al. p. 14
2013Squaliolus Underwood and Schlogl p. 492

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classChondrichthyes
subclassElasmobranchiiBonaparte 1838
RankNameAuthor
infraclassEuselachii()
—NeoselachiiCompagno 1977
—Selachii
superorderSqualimorphi
—SqualidaNelson et al. 2016
—Squaliformes(Goodrich 1909)
familyDalatiidaeGray 1851
genusSqualiolusSmith and Radcliffe 1912

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. Squaliolus Smith and Radcliffe 1912
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†Squaliolus gasconensis Adnet 2006
Squaliolus laticaudus Smith and Radcliffe 1912
†Squaliolus schaubi Casier 1958
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: marinesubp
Locomotion: actively mobileo
Life habit: nektonico
Diet: carnivoreo
Created: 2009-07-21 07:18:41
Modified: 2009-07-21 09:18:41
Source: o = order, subp = subphylum
References: Hendy et al. 2009, Wagner 2023, Carroll 1988

Age range

Maximum range based only on fossils: base of the Lutetian to the top of the Burdigalian or 47.80000 to 15.97000 Ma
Minimum age of oldest fossil (stem group age): 38.0 Ma

Collections (14 total)


Time interval Ma Country or state Original ID and collection number
Lutetian - Bartonian47.8 - 38.0France (Landes) S. gasconensis (161753)
Priabonian38.0 - 33.9Barbados Centroscymnus schaubi (205153 220740 220746 220747)
Late/Upper Eocene37.2 - 33.9Barbados Centroscymnus schaubi (220735)
Early/Lower Miocene23.03 - 15.97Jamaica S. sp., S. schaubi (69729)
Burdigalian20.44 - 15.97Slovakia S. schaubi (161895 161896 161897 161898 161900 161901 161902)