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Globorotalia troelseni

Globorotaliidae

Synonymy list
YearName and author
1957Globorotalia troelseni Loeblich and Tappan p. 196 figs. Pl. 60, Fig. 4a-c; Pl. 63, Fig. 5a-c

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RankNameAuthor
kingdomChromistaCavalier-Smith 1981
subkingdomRhizaria()
phylumForaminifera(Eichwald 1830)
superfamilyGlobigerinoidea
RankNameAuthor
familyGloborotaliidaeCushman 1927
genusGloborotalia
speciestroelseni

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.

†Globorotalia troelseni Loeblich and Tappan 1957
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Diagnosis
ReferenceDiagnosis
A. R. Loeblich and H. Tappan 1957Test free, medium sized, compressed trochospiral, I.5 to 2 whorls visible on the spiral side with the early spire somewhat depressed, umbilical side with an open umbilicus with portions of earlier whorls visible within, due to the tendency of the final whorl to uncoil slightly and appear somewhat evolute, periphery subacute with a slight keel, peripheral margin lobulate; 5 to 6 chambers in the final whorl, moderately inflated, of nearly equal breadth and height, increasing gradually in size as added; sutures distinct, depressed, gently curved on the spiral side, nearly radial on the umbilical side; wall calcareous, distinctly perforate, surface smooth; aperture interiomarginal, extraumbilical-umbilical, a relatively high arch extending to the periphery, bordered above with a very narrow lip.