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Neoguraleus (Fusiguraleus) plenecomptus
Taxonomy
Neoguraleus (Fusiguraleus) plenecomptus was named by Grant-Mackie and Chapman-Smith (1971). Its type specimen is G5907, a shell, and it is a 3D body fossil. Its type locality is N62/f587 Te Piki, Cape Runaway, which is in a Castlecliffian coastal mudstone in the Waipaoa Formation of New Zealand.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1971 | Neoguraleus (Fusiguraleus) plenecomptus Grant-Mackie and Chapman-Smith pp. 681 - 682 figs. Fig. 5, No. 19 |
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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.
†Neoguraleus (Fusiguraleus) plenecomptus Grant-Mackie and Chapman-Smith 1971
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. A. Grant-Mackie and M. Chapman-Smith 1971 | Shell large for subgenus, elongate.fusiform, of 8t whorls (9t estimated for largest paratype) with rounded profile, and sculpture of heavy axials and numerous flat·topped spirals over whole shell. Protoconch of 2t whorls, somewhat flattened on top; first 1t whorls smooth, with rather bulbous nucleus, then 4-5 low rounded spirals appear and faint closely spaced curved axials appear within half a whorl, there being about 15 axials on last half whorl of protoconch; junction with first neanic whorl marked by passage to more prominent, widely spaced axials and stronger spirals. Axials 15 on body·whorl, weakening but continuous between sutures and those of adjacent whorls aligned with each other after first two neanic whorls, vertical but curving forward near posterior suture following trend of outer lip and showing position of broad shallow rounded sinus; axials evanesce rapidly over base. Spirals on first neanic whorl 6 in number, of equal strength, evenly spaced twice own width apart, with anterior and posterior ones closely bordering sutures; on next whorl all except anteriormost increase in strength, the anterior second and third now strongest, posteriormost migrates away from suture and weak 7th spiral is inserted at suture, weak secondaries inserted in anterior three interspaces; third whorl shows insertion of secondaries in all but posteriormost interspace, tertiaries faintly visible in anterior two interspaces; on sub~equent whorls tertiary threads occupy anterior three interspaces, the posteriormost remains free of subsidiaries and the remaining two interspaces carry secondaries equal in strength to the tertiaries of anterior interspaces; body. whorl carries another 5 equal primaries on base and 9-10 on neck, weakening and becoming crowded anteriorly, with secondaries on base and posterior of neck and tertiaries in some interspaces. Spirals undiminished in strength across axials, except in abraded specimens. Spire outlines straight, height about 1t times aperture plus canal. Aperture typical. |