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Loxisonia
Taxonomy
Loxisonia was named by Batten (1985) [Sepkoski's age data: P Leon P Guad Sepkoski's reference number: 797].
It was assigned to Murchisoniidae by Batten (1985); to Gastropoda by Frýda (2000); to Orthonemidae by Mazaev (2002); to Archaeogastropoda by Sepkoski (2002); and to Orthonematidae by Wagner (2023).
It was assigned to Murchisoniidae by Batten (1985); to Gastropoda by Frýda (2000); to Orthonemidae by Mazaev (2002); to Archaeogastropoda by Sepkoski (2002); and to Orthonematidae by Wagner (2023).
Species
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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.
G. †Loxisonia Batten 1985
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†Loxisonia hormotoma Batten 1985
†Loxisonia zygopleuroides Batten 1985
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. L. Batten 1985 | Moderately high-spired, fusiform shells with a selenizone located near the suture on the upper whorl surface; whorls elongate, rounded; sutures embrace whorls below the rounded peripheral region; selenizone margins sharply defined by narrow grooves; ornament, ifpresent, consists ofcollabral ribs or threads, is more developed on the outer whorl face; columellar lip reflexed into a narrow funicle or callus; siphonal canal is short and shallow. |
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 7 | 6.23 | 3.20 | 12.0 | 6.00 | 3.27 | |
| shell diameter | 7 | 2.52 | 1.10 | 6.00 | 2.80 | 1.64 |
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| Source: c = class | |||||
| Reference: Kiessling 2004 | |||||