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Achistrum triassicum

Holothuroidea - Apodida - Achistridae

Taxonomy
Achistrum triassicum was named by Frizzell and Exline (1955). It is considered to be a form taxon.

It was recombined as Achistrum (Achistrum) triassicum by Hampton (1958); it was misspelled as Aschistrum triassicum by Gutschick (1959), Kozur and Mostler (1971), Gazdzicki et al. (1978).

Sister species lacking formal opinion data
A. monochordatum

Synonymy list
YearName and author
1955Achistrum triassicum Frizzell and Exline
1958Achistrum (Achistrum) triassicum Hampton p. 75
1959Aschistrum triassicum Gutschick p. 133 figs. pl. 25 figs. 25,26
1971Achistrum triassicum Kozur and Mostler p. 27
1978Achistrum triassicum Gazdzicki et al. p. 360 figs. pl. 49 figs 4-6

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

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.

†Achistrum triassicum Frizzell and Exline 1955
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Diagnosis
No diagnoses are available
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: Arkadiev and Bugrova 1999, Aberhan 1992, Aberhan et al. 2004

Age range: base of the Kinderhookian to the top of the Julian or 358.86000 to 233.60000 Ma

Collections (6 total)


Time interval Ma Country or state Original ID and collection number
Kinderhookian358.86 - 351.9USA (Indiana) Aschistrum triassicum (69302)
Fassanian241.464 - 239.48Hungary Achistrum triassicum (99503)
Ladinian241.464 - 237.0Iran Achistrum triassicum (97874)
Longobardian239.48 - 237.0Hungary Achistrum triassicum (99504)
Julian237.0 - 233.6Hungary Achistrum triassicum (99502)
Julian237.0 - 233.6Slovakia Achistrum triassicum (57037)