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Janassa unguicula

Chondrichthyes - Petalodontiformes - Janassidae

Taxonomy
Janassa unguicula was named by Eastman (1903). It is a 3D body fossil. Its type locality is Cedar Creek, Atchison shale, which is in a Kasimovian marine shale in Nebraska.

Synonymy list
YearName and author
1903Janassa unguicula Eastman
1916Janassa unguicula Branson p. 646 figs. Pl 2, figs 7-18
1930Janassa unguicula Branson p. 60 figs. Pl 16, figs 4,5
1933Janassa unguicula Branson p. 179 figs. 1.5, 1.6
1988Janassa unguicula Bendix-Almgreen et al. p. 101

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
RankNameAuthor
classChondrichthyes
subclassHolocephali(Bonaparte 1832)
orderPetalodontiformes()
familyJanassidaeJaekel 1899
subfamilyJanassinae
genusJanassa
speciesunguicula

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.

Janassa unguicula Eastman 1903
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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 07:09:25
Modified: 2009-07-21 09:09:25
Source: o = order, subp = subphylum
References: Hendy et al. 2009, Wagner 2023, Carroll 1988

Age range: base of the Kasimovian to the top of the Wuchiapingian or 307.00000 to 254.14000 Ma

Collections (6 total)


Time interval Ma Country or state Original ID and collection number
Kasimovian307.0 - 303.7USA (Nebraska) Janassa unguicula (type locality: 132971)
Roadian274.4 - 266.9USA (Wyoming) Janassa unguicula (128880 149345)
Guadalupian274.4 - 259.51USA (Wyoming) Janassa unguicula (236340)
Wuchiapingian259.51 - 254.14USA (Wyoming) Janassa unguicula (90239 236341)