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Eoctenodus microsoma

Osteichthyes - Ctenodontiformes - Ctenodontidae

Discussion

(Amended diagnosis from Long 1987.)

Taxonomy
Dipterus microsoma was named by Hills (1931) [A ctenodontid having a parasphenoid one third as broad as long, and being of almost uniform breadth for the anterior two thirds of its length, and with anterolateral margins forming an angle of approximately 60 degrees. Upper jaw toothplates more ovoid than triangular, with up to 10 subparallel, relatively straight tooth ridges of separated cusps which coalesce towards the centre of radiation of the tooth plate, and separated by relatively deep clefts. Cleithrum with a very narrow waist between the ventral and dorsal division of the external lamina, and having a very large branchial lamina. Scales, thin, subrectangular and cycloid with an ornament of fine wavy ridges which are not closely packed but sparsely distributed.]. It is not extant. Its type specimen is MUGD 775, a partial skull (left upper toothplate and entopterygoid).

It was recombined as Eoctenodus microsoma by Long (1987).

Synonymy list
YearName and author
1931Dipterus microsoma Hills
1987Eoctenodus microsoma Long

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
RankNameAuthor
subclassSarcopterygii()
infraclassDipnomorpha(Ahlberg 1991)
superorderDipnoi(Müller 1884)
orderCtenodontiformes
familyCtenodontidaeWoodward 1891
genusEoctenodus
speciesmicrosoma()

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.

Eoctenodus microsoma Hills 1929
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: marinesubp
Locomotion: actively mobilec
Created: 2009-07-20 21:50:54
Modified: 2009-07-20 23:50:54
Source: c = class, subp = subphylum
References: Carroll 1988, Hendy et al. 2009, Kiessling 2004

Age range: Frasnian or 382.31000 to 372.15000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Frasnian382.31 - 372.15Australia (Victoria) Eoctenodus microsoma (239384)