Rögl, F.; Egger, H. (2011). A new planktonic foraminifera species (Hantkenina gohrbandti nov. spec.) from the Middle Eocene of the northwestern Tethys (Mattsee, Austria). Austrian Journal of Earth Sciences. 104(1):4-14.

335041

Rögl, F.; Egger, H.

2011

104(1):4-14

Publication

http://www.zobodat.at/pdf/BerichteGeolBundesanstalt_85_0140.pdf

Available for editors  

The newly discovered planktonic foraminifer Hantkenina gohrbandti nov. spec. forms the evolutionary link between the genera Clavigerinella and Hantkenina. This ancestor of the genus Hantkenina is characterized by pointed chamber ends with a nub (prototubulospines) and in some cases by the first tubulospines appearing in a juvenile growth stage. The transition from Clavigerinella caucasica to Hantkenina mexicana is observed in a 2 m thick part of the Middle Eocene Holzhäusl section (Mattsee, Austria) within planktonic foraminifera Zone E8 and calcareous nannoplankton Sub-Zone NP15b. The section was deposited in bathyal waterdepths in the northwestern Tethyan realm and is now part of the Ultrahelvetic thrust unit.

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