Agglutinated conical foraminifera from the Lower-Middle Eocene of the Trentinara Formation (southern Italy)

Autor: Enrica Vecchio, Lukas Hottinger
Rok vydání: 2007
Předmět:
Zdroj: Facies. 53:509-533
ISSN: 1612-4820
0172-9179
DOI: 10.1007/s10347-007-0112-6
Popis: Five taxa of agglutinated conical foraminifera were recorded for the first time in the Trentinara Formation, and two of them are new. Barattolites trentinarensis n. gen. n. sp. shows high conical shape, an eccentric proloculus, trochospiral early chambers, two orders of radial subepidermal partitions and columnar pillars. It is recorded in the Ypresian of Panno Bianco Mt. (Calabria) and in the Ypresian-Lower Lutetian of Serra Pastorella (Basilicata). Pseudochrysalidina (?) variospira n. sp. shows a high conical test, a trochospiral juvenile growth stage, a megalosphere in apical position, and low pillars and chambers in the adult stage. It is known in the Ypresian of Serra Pastorella. Agglutinated conical foraminifera fill the late Lower to early Middle Eocene gap in their Paleogene record. Their very intermittent record is due to their extremely narrow ecological range.
Databáze: OpenAIRE
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