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Aclisina striatula
Taxonomy
Murchisonia striatula was named by de Koninck (1844). It is a 3D body fossil.
It was recombined as Aclisina striatula by de Koninck (1881) and Knight (1941).
It was recombined as Aclisina striatula by de Koninck (1881) and Knight (1941).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1844 | Murchisonia striatula de Koninck p. 415 figs. pl. 40 f. 7a-b |
| 1844 | Murchisonia subsulcata de Koninck p. 416 figs. pl. 38 f. 4a-c |
| 1881 | Aclisina striatula de Koninck p. 86 figs. pl. 9 f. 57-58 |
| 1941 | Aclisina striatula Knight pp. 29 - 30 figs. Plate 44, figures 3a-d |
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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.
†Aclisina striatula de Koninck 1844
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Invalid names: Aclisina selkirkii Donald 1898 [objective synonym], Aclisina subsulcata de Koninck 1844 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. B. Knight 1941 | Very high-spired, many-whorled gastropods with numerous revolving costae and a short slit and selenizone; whorl profile moderately rounded between sutures, sutures rather deep; base rounded, anomphalous; nucleus unknown; eolumellar lip reflexed, very gently arcuate; parietal inductura thin but well developed; outer lip with a rather deep angular sinus, culminating in a slit about one-fifth of the whorl circumference in depth at the periphery of the whorl, the slit generating an obscure selenizone, the margin of the lip proceeding obliquely backward from the upper suture to the selenizone with little forward convexity and below the selenizone with considerable forward obliquity; ornamentation a series of strong, revolving costae, of which three rather crowded ones at about mid-whorl between sutures occupy the selenizone, four strong costae above the selenizone, five not quite so strong between it and the lower suture, and three or four below the line of suture on the base, lines of growth exceedingly faint. The paratype, a specimen of a little over four adult whorls but lacking an unknown number of both earlier and later whorls, must have measured something like 30 mm. in height; its width is about 7 mm., and it has a pleural angle of about 9 degrees. |