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Current identification/main database link: Globigerina bulloides d’Orbigny, 1826
Original Description
Size:
Extra details from original publication
Unsere Art stimmt im Habitus vollkommen mit Gl. bulloides d'Orb. (l. c. p.163. Taf. 9. F. 4-6) überein, unterscheidet sich jedoch durch 3 (statt 2) Windungen, 9 (statt 7) Kammern, 2 grosse Mündungen (statt einer kleinen). Es wäre jedoch sehr leicht möglich, class beide Arten zusammenfielen, indem die grössere Anzahl der Kammern und Umgänge wegen ihrer Undeutlichkeit sehr leicht übersehen, und die zwei oft zusammenfliessenden Mündungen leicht für eine einzige angesprochen werden konnten. Es ist diess um so wahrscheinlicher, da es mir nicht gelang, die von d' Orbigny bei Nussdorf als häufig angeführte Gl. bulloides dort zu finden; die dort wirklich zahlreich vorfindigen Exemplare wiesen sich alle als Gl. diplostoma aus.
Häufig im Leithakalke von Nussdorf, im Tegel von Baden, Möllersdorf und Grinzing bei Wien, im Leithakalke von Wurzing und im Sande von Rohitsch in Steiermark, im Tegel von Felsö-Lapugy in Siebenbürgen und im Salzthone von Wieliczka in Galizien.
Shell wider than high, convex, umbilicated above, punctured, with 3 whorls not very clear. The last with 4 large globular chambers separated by deep sutures, which mostly lie in one plane and then have a shallow umbilical depression in the middle between them. But sometimes two opposite chambers lie somewhat lower, where the umbilicus then almost disappears (Plate XLVIII. F. 1). The chambers of the other two whorls, which rest on the middle point of the last whorl, are very small and not clearly differentiated. The whole shell usually has nine chambers. The last two chambers each bear a large orifice, which lie close together on the upper side in the umbilicus, and often flow together into one. But when the chambers of the last whorl are not in one plane, they are always separate. The mouth of the last chamber is much larger than that of the penultimate.
The habit of our species agrees completely with G. bulloides d'Orb. (l. c. p.163. Taf. 9. F. 4-6), but differs in having 3 (instead of 2) whorls, 9 (instead of 7) chambers, 2 large apertures (instead of one small one). It would, however, be very easy for the two species to coincide, the greater number of chambers and whorls being easily overlooked from their obscurity, and the two apertures, which often merge, easily be accounted for as one. This is all the more probable since I did not succeed in finding the G. bulloides there; the really numerous specimens found there all turned out to be G. diplomostoma.
Frequent in the Leitha Limestone of Nussdorf, in the Tegel of Baden, Möllersdorf and Grinzing near Vienna, in the Leitha Limestone of Wurzing and in the Sande of Rohitsch in Styria, in the Tegel of Felsö-Lapugy in Transylvania and in the Salzthone of Wieliczka in Galicia. [Google translate 2022]
Globigerina diplostoma compiled by the pforams@mikrotax project team viewed: 11-12-2024
Short stable page link: https://mikrotax.org/pforams/index.php?id=130445 Go to Archive.is to create a permanent copy of this page - citation notes |
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