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Kossmaticeras (Kossmaticeras) haumuriensis
Taxonomy
Ammonites haumuriensis was named by Hector (1886).
It was recombined as Kossmaticeras (Madrasites) haumuriensis by Woods (1917); it was recombined as Kossmaticeras (Kossmaticeras) haumuriensis by Henderson (1970).
It was recombined as Kossmaticeras (Madrasites) haumuriensis by Woods (1917); it was recombined as Kossmaticeras (Kossmaticeras) haumuriensis by Henderson (1970).
Sister species lacking formal opinion data
Synonymy list
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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.
†Kossmaticeras (Kossmaticeras) haumuriensis Hector 1886
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. A. Henderson 1970 | Diagnosis. Shell small and narrowly umbilicate. Umbilical wall steep, flanks sub- parallel, gently convex, and the venter broadly arched. Regularly spaced primary ribs appear on the umbilical shoulder where they may be slightly thickened. Umbilical tubercles are absent. On the dorsal or mid-flank an intercalatory appears after each primary so that the number of ribs is doubled. Ribs are prorsiradiate on the dorsal flanks, rectiradiate on the mid-flank and quite strongly projected across the venter. They number some 45 per half whorl. Wide, incised constrictions, margined on both sides by collars, appear at a shell diameter of 15-20 mm. and number some 3 or 4 per half whorl; they are prorsiradiate and sinuous in the same sense as the ribs and each truncates one or two ribs. The suture is typical of the genus. |
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||