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Zeauvigerina zelandica
Taxonomy
Zeauvigerina zelandica was named by Finlay (1939). It is not extant.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1939 | Zeauvigerina zelandica Finlay pp. 541-542 figs. Plate 69, figs. 4a, b |
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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.
†Zeauvigerina zelandica Finlay 1939
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| H. J. Finlay 1939 | Test minute, even for the genus. Microspheric form larger, fairly regularly and acutely tapering, about 8 chambers on each side and a small distinct proloculum, perfectly terminal and with no trace of coiling. Megalospheric form shorter and less acute, with a tendency towards a change in the angle of tapering on one side at lower third, about 6 chambers on each side. Greatest width usually across last 2 chambers, but sometimes the sides below this almost sub-parallel. Considerable variation in outline and proportions. Early chambers usually considerably compressed in microspheric form, of equal inflation with the later ones in megalospheric. Adult chambers sub-globular, somewhat compressed from front to back, and closely knit at sutures, which are never more than shallow grooves and frequently most obscured by ornament; they are not quite horizontal, but the angle is slight; a similar medial, undulating, shallow groove where chambers meet. There is never any trace of separation of the later chambers as in Eouvigerina gracilis Cushman. Final chambers not triserial, the whole structure of the shell being bolivine. Aperture rising abruptly from ultimate chamber where it meets penultimate, medial in position, a relatively stout and large tube with a fairly broad, phialine lip, sometimes very short or obscurely developed and occasionally with last part smooth, but the papillae usually run through right up to it. |
Measurements
No measurements are available
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| Source: o = order | |||||
| Reference: Kiessling 2004 | |||||
Collections
No collection or age range data are available