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Ischnacanthus

Chondrichthyes - Ischnacanthiformes

Taxonomy
Ischnacanthus was named by Powrie (1864) [Sepkoski's age data: S Prid D Sieg-l Sepkoski's reference number: 455]. It is not extant. Its type is Ischnacanthus gracilis. It was considered monophyletic by Voichyshyn and Szaniawski (2012).

It was assigned to Ischnacanthidae by Jordan (1963) and Denison (1979); to Ischnacanthida by Woodward (1891) and Sepkoski (2002); and to Ischnacanthiformes by Voichyshyn and Szaniawski (2012).

Synonymy list
YearName and author
1864Ischnacanthus Powrie
1891Ischnacanthus Woodward p. 20
1963Ischnacanthus Jordan p. 591
1979Ischnacanthus Denison
2002Ischnacanthus Sepkoski
2012Ischnacanthus Voichyshyn and Szaniawski

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
RankNameAuthor
superclassGnathostomata
classChondrichthyes
subclassAcanthodii(Owen 1846)
orderIschnacanthiformesBerg 1940
genusIschnacanthusPowrie 1864

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. †Ischnacanthus Powrie 1864
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†Ischnacanthus anglicus White 1961
†Ischnacanthus gracilis Egerton 1861
†Ischnacanthus kingi White 1961
†Ischnacanthus scheii Spjeldnaes 1967
†Ischnacanthus wickhami White 1961
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: marinesubp
Locomotion: actively mobilec
Life habit: nektonicc
Diet: carnivorec
Created: 2004-09-24 07:51:17
Modified: 2009-12-13 03:07:42
Source: c = class, subp = subphylum
References: Carroll 1988, Aberhan et al. 2004

Age range: base of the Ludfordian to the top of the Lochkovian or 425.60000 to 410.80000 Ma

Collections (3 total)


Time interval Ma Country or state Original ID and collection number
Ludfordian425.6 - 423.0United Kingdom (England) I. kingi (8314 8320)
Lochkovian419.2 - 410.8United Kingdom (Scotland) I. sp. (26908)