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Loxisonia zygopleuroides

Gastropoda - Orthonematidae

Taxonomy
Loxisonia zygopleuroides was named by Batten (1985). It is a 3D body fossil. Its type locality is H.S. Lee Mine No. 8, Kinta Valley near Kampar, which is in a Kungurian shallow subtidal limestone in the H. S. Lee Formation of Malaysia.

Synonymy list
YearName and author
1985Loxisonia zygopleuroides Batten p. 11 fig. 12
2000Loxosonia zygopleuroides Frýda p. 369
2023Loxisonia zygopleuroides Wagner p. 4647

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
phylumMollusca
RankNameAuthor
classGastropoda
subclassCaenogastropoda(Cox 1959)
superfamilyOrthonematoideaNützel and Bandel 2000
familyOrthonematidae()
genusLoxisonia
specieszygopleuroides

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.

Loxisonia zygopleuroides Batten 1985
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Diagnosis
ReferenceDiagnosis
R. L. Batten 1985Shell with smooth, rounded whorls except at the selenizone and upper whorl surface above it which are flattened relative to the rest ofthe whorl; the selenizone is flat to concave with asymmetric lunulae; the selenizone is located higher on the whorl; ornament is strongly developed collabral ribs which are rounded between the suture and the selenizone; the ribs are strongly arcuate on the lower whorl face forming a deep sinus adjacent to the selenizone; ornament absent on the base; siphonal notch short; anomphalus.
Measurements
partNmeanminimummaximummedians.d.
shell height37.966.0012.07.003.21
shell diameter33.772.806.003.201.74

Composition: aragonitec
Locomotion: actively mobilec
Life habit: epifaunalc
Vision: limitedc
Created: 2004-02-29 11:40:59
Modified: 2010-02-11 01:35:02
Source: c = class
Reference: Kiessling 2004

Age range: Kungurian or 283.30000 to 274.40000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Kungurian283.3 - 274.4Malaysia (Perak) Loxisonia zygopleuroides (type locality: 62131)