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Amaurolithus amplificus

Edited by Lyndsey on Thu, 10/03/2011 - 11:34

Amaurolithus amplificus (Bukry and Percival, 1971) Gartner and Bukry, 1975 [Ceratolithus]

Description: Like A. primus but angular; right arm with rodded keel and longer than left.

Original description:

Ceratolithus amplificus 010146.jpgCeratolithus amplificus 010147.jpgCeratolithus amplificus 010148.jpgCeratolithus amplificus 010149.jpg

10-3amplificus.JPG 10-4amplificus.JPG 10-5amplificus.JPG

Alternative combination:

Nicklithus amplificus (Bukry and Percival, 1971) Raffi Backman & Rio 1998.

Raffi et l. (1998) presented evidence that A. primus and A. amplificus evloved independantly from Triquetrotrhabdulus and so proposed a new genus, Nicklithus (in honour of N Shackleton) for A. amplificus. I have followed the conventional nomenclature here, but comments on this are welcome (JRY).

Synonym:

C. dentatus Bukry, 1973.

Geological Time Data
Geological Time Periods: 
NN11b
NN11b
Biblio Reference: 
Young, JR.  1998.  Neogene. Calcareous nannofossil biostratigraphy. :225-265.
Notes on occurrence information: 
Restricted to short interval within NN11B
Scratchpads developed and conceived by: Vince Smith, Simon Rycroft, Dave Roberts, Ben Scott...