Metadoga ampulla


Classification: Mesozoic -> Holococcoliths -> Rarer genera -> Metadoga -> Metadoga ampulla
Sister taxa: M. ampulla, M. mercurius, M. sp.,

Distinguishing features: Small (holotype 4.4 µm) species with flask-like outline and lacking internal partition


Taxonomy:

Citation: Metadoga ampulla Lees & Varol in Lees, 2007
Rank: Species

Farinacci & Howe catalog pages: Metadoga ampulla *

Distinguishing features: Small (holotype 4.4 µm) species with flask-like outline and lacking internal partition


Morphology remarks: "A small species of Metadoga that has a simple flask-shaped outline in side-view. The holococcolith is cavate and the upper half of the lith goes into extinction in XPL at 0 ̊. Differentiation: The new species differs from other species of Metadoga in having the distinctive standard flask outline and in lacking a mid-lith collar." [Lees 2007]

Size: Holotype dimensions: H = 4.40μm, W = 4.18μm.

Geological Range:
Last occurrence (top): within Campanian Stage (72.05-83.64Ma, top in Campanian stage). Data source: Lees 2007 (original description)
First occurrence (base): within Cenomanian Stage (93.90-100.50Ma, base in Cenomanian stage). Data source: Lees 2007 (original description)

Plot of occurrence data:

  • (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Metadoga

    References:

    Lees, J. A. (2007). New and rarely reported calcareous nannofossils from the Late Cretaceous of coastal Tanzania: outcrop samples and Tanzania Drilling Project Sites 5, 9 and 15. Journal of Nannoplankton Research. 29(1): 39-65. gs


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    Metadoga ampulla compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 22-8-2019

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10652 Go to Archive.is to create a permanent copy of this page - citation notes



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