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Calcidiscus macintyrei

Sun, 23/03/2008 - 16:16 — Jeremy Young
calcidiscaceae.jpg
Citation: 
Calcidiscus macintyrei (Bukry and Bramlette, 1969) Loeblich and Tappan, 1978 [Cyclococcolithus]

Description: Large circular species of Calcidiscus with central opening.

Remarks: Usually confined to specimens >10μm to allow unambguous biostratigraphic use. Essentially this is a large variant of C. tropicus.

Range: NN17 to 19 (use of the name C. macintyrei is normally confined to the large specimens occurring in this time interval although similar morphotypes do occur in the Miocene).

Calcidiscus macintyrei Calcidiscus macintyrei B Ca mac ex calcite palaceCmac191-06NN16.JPG

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