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Aboculus robustus

Holothuroidea - Apodida - Achistridae

Taxonomy
Aboculus robustus was named by Wernlund (1977). It is not extant. It is considered to be a form taxon. Its type specimen is holotype TTU-N09/6 7, paratypes TTU-N09/68-71, TTU-NlO/28. Its type locality is Pine Springs area, Guadalupe Mountains, which is in a Capitanian basinal (carbonate) floatstone in the Bell Canyon Formation of Texas. It is the type species of Aboculus.

Synonymy list
YearName and author
1977Aboculus robustus Wernlund pp. 48-49 figs. PI. 1 figs 12-17

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
phylumEchinodermata
subphylumEleutherozoa
RankNameAuthor
—Echinozoa()
classHolothuroidea()
orderApodida
familyAchistridae
genusAboculus
speciesrobustus

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.

†Aboculus robustus Wernlund 1977
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Diagnosis
ReferenceDiagnosis
R. J. Wernlund 1977Sclerite in the form of a hook; shank robust, moderate length, straight, broadly curving at base to join spear, strongly elliptical but variable diameter, usually with one small spine projecting toward spear at 2/3 length from base, constricted above lateral spine; spear large, long, straight to recurved; top of hook in the form of a knob, formed by flaring of shank above constriction, area of knob opposite the spear (back) characterized by a pair of curved ridges that lose their identity as they extend into the constriction of shank, sides of knob marked by shallow trough-shaped depressions.
Measurements
No measurements are available
Composition: high Mg calciteo
Ontogeny: accretion, addition of partsp
Environment: marinep
Locomotion: actively mobileo
Life habit: epifaunalo
Diet: detritivoreo
Vision: blindc
Dispersal: waterp
Dispersal 2: planktonicp
Created: 2004-06-23 02:35:55
Modified: 2009-10-09 11:59:34
Source: o = order, c = class, p = phylum
References: Aberhan 1992, Arkadiev and Bugrova 1999, Aberhan et al. 2004

Age range: Capitanian or 264.28000 to 259.51000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Capitanian264.28 - 259.51USA (Texas) Aboculus robustus (type locality: 99860)