Nannotax3 - ntax_mesozoic - Metadoga ampulla Nannotax3 - ntax_mesozoic - Metadoga ampulla

Metadoga ampulla


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

Distinguishing features:
Parent taxon (Metadoga): Cavate, conical-flask shaped holococcolith with lid and internal partition.
This taxon: Small (holotype 4.4 µm) species with flask-like outline and lacking internal partition


Taxonomy:

Citation: Metadoga ampulla Lees & Varol in Lees, 2007
taxonomic rank: Species

Farinacci & Howe catalog pages: M. ampulla *

Distinguishing features:
Parent taxon (Metadoga): Cavate, conical-flask shaped holococcolith with lid and internal partition.
This taxon: Small (holotype 4.4 µm) species with flask-like outline and lacking internal partition


Morphology:

"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.

Search data:
LITHS: holococcolith, hollow,
Lith size: 4->5µm;
Data source notes: holotype +/-0.5 µm
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Campanian Stage (72.17-83.65Ma, 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:

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 O


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Metadoga ampulla compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 2-3-2024

Taxon Search:
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Short stable page link: https://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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