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Knightella irregularis
Taxonomy
Knightia irregularis was named by Longstaff (1933). It is a 3D body fossil. Its type locality is Dykes, Kilbirnie, which is in a Brigantian carbonate limestone/mudstone in the Lower Limestone Formation of the United Kingdom.
It was recombined as Knightella irregularis by Longstaff (1933) and Ketwetsuriya et al. (2020).
It was recombined as Knightella irregularis by Longstaff (1933) and Ketwetsuriya et al. (2020).
Synonymy list
| Year | Name and author |
|---|---|
| 1933 | Knightia irregularis Longstaff p. 119 figs. pl. 12 f. 4-6 |
| 1933 | Knightella irregularis Longstaff p. 480 |
| 2020 | Knightella irregularis Ketwetsuriya et al. p. 38 figs. 25B-E |
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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.
†Knightella irregularis Longstaff 1933
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. D. Longstaff 1933 | Shell small, slender, composed of about ten whorls, sometimes irregular in their manner of growth, being either compactly and regularly coiled or else drawn downwards, and the sutures thus nearly horizontal or varying in their obliquity. Whorls sub-angular below the middle, flattened above and below, earliest whorl wide, forming a blunt apex, with the protoconch small and slightly raised obliquely. Ribs on the early whorls, sigmoidal threads on the later, all crossed by fine spiral lines. Aperture ovate, inner lip spread on the body whorl, the columella very slightly oblique. |