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Discohelix calculus

Gastropoda - Discohelicidae

Taxonomy
Planorbis calculus was named by Sandberger (1870).

It was recombined as Discohelix calculus by Pan (1977).

Sister species lacking formal opinion data
D. didimtuensis, D. parvanodosa, D. planus, D. sinistra, D. sinsitra, D. subequalis

Synonymy list
YearName and author
1870Planorbis calculus Sandberger p. 14 figs. Pl 1, fig 7a
1977Discohelix calculus Pan p. 90 figs. Pl 1, figs 2,3

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
RankNameAuthor
classGastropoda
subclassVetigastropoda(Salvini-Plawen 1980)
superfamilyCirroidea
familyDiscohelicidaeSchröder 1995
genusDiscohelixDunker 1847
speciescalculus(Sandberger 1870)

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.

†Discohelix calculus Sandberger 1870
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Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
shell height20.2030.1800.2300.2050.035

Composition: aragonitec
Locomotion: actively mobilesupero
Life habit: epifaunalsupero
Diet: grazersupero
Vision: limitedc
Created: 2009-09-10 08:55:39
Modified: 2009-09-10 10:55:39
Source: supero = superorder, c = class
References: Kiessling 2004, Hendy et al. 2009

Age range: base of the Bajocian to the top of the Bathonian or 170.90000 to 165.30000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Bajocian - Bathonian170.9 - 165.3China (Yunnan) Discohelix calculus (165451)