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Arechia crassicaudata

Chondrichthyes - Myliobatiformes

Taxonomy
Trygonobatus crassicaudatus was named by de Blainville (1818).

It was recombined as Urolophus crassicaudatus by Blainville (1818) and Eastman (1904); it was considered an invalid subgroup of Urolophidae by Carnevale et al. (2014); it was recombined as Arechia crassicaudata by Marramà et al. (2020).

Synonymy list
YearName and author
1818Urolophus crassicaudatus Blainville
1818Trygonobatus crassicaudatus de Blainville
1904Urolophus crassicaudatus Eastman p. 24
2020Arechia crassicaudata Marramà et al. p. 2

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
RankNameAuthor
classChondrichthyes
subclassElasmobranchiiBonaparte 1838
orderMyliobatiformesCompagno 1973
superfamilyDasyatoideaWhitley 1940
genusArechiaCappetta 1983
speciescrassicaudata(de Blainville 1818)

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.

Arechia crassicaudata de Blainville 1818
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Diagnosis
ReferenceDiagnosis
G. Marramà et al. 2020A species of Arechia that differs from A. arambourgi in the following dental characters: crown with two transverse cutting crests separated by a depression; in profile view, the labial crown face is concave just below the main crest, but convex further basally; lingual crown face slightly more developed than the labial one, with convex profile in its upper part and concave profile in its mid-lower region; edge of the lingual visor slightly more convex than the labial one. Furthermore, Arechia can be diagnosed by the following skeletal features: pectoral disc rhomboidal, slightly longer than wide (about 1.1 times); tail short, 44–52% TL; basihyal not fragmented and separated from the first hypobranchials; approximately 238 vertebral centra; distal segment of the propterygium located between mouth and antorbital cartilage; mesopterygium single, with external margins straight and not fused to radials; 100–117 pectoral radials; 15–17 pelvic-fin radials; aplesodic caudal fin of 20–22% TL.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: marinesubp
Locomotion: actively mobileo
Life habit: nektobenthico
Diet: carnivoreo
Created: 2009-07-21 07:05:51
Modified: 2009-07-21 09:05:51
Source: o = order, subp = subphylum
References: Hendy et al. 2009, Wagner 2023, Carroll 1988
Collections
No collection or age range data are available