Thursday, February 2, 2012

Candeina nitida - a unique planktonic foraminifera

Candeina nitida
Candeina nitida d'Orbigny, 1839 is a unique and easy recognizable planktonic foraminifera. Its umbiliculus is covered resulting in a globose appearance. Along the last sutures rows of pores are placed, which commonly have a marked rim.

It is reported in the fossil record from Earliest Pliocene till recent. It thus allows to distinguish older from younger sediments, namely Miocene from Pliocene.

The specimens shown were found 1815m deep in the Puerto Rico Trench. The tests sank to the bottom as Candeina nitida d'Orbigny 1839 lives in the upper parts of the ocean.

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Candeina nitida