Mazaganella pulla

Distinguishing features:
Parent taxon (Mazaganella): Three-shielded placoliths with a wide central-area spanned by a variety of bars, grills, nets or plates. The distal shield may be high and flaring. The distal shield is formed from non-imbricating elements, joined along radial sutures. LM image is generally dark, but birefringence increases when the distal shield is high.
This taxon: Mazaganella with three low, adpresssed shields and a central area spanned by a cruciform plate bearing a short hollow spine.

Taxonomy:

Farinacci & Howe catalog pages: M. pulla *

Distinguishing features:
Parent taxon (Mazaganella): Three-shielded placoliths with a wide central-area spanned by a variety of bars, grills, nets or plates. The distal shield may be high and flaring. The distal shield is formed from non-imbricating elements, joined along radial sutures. LM image is generally dark, but birefringence increases when the distal shield is high.
This taxon: Mazaganella with three low, adpresssed shields and a central area spanned by a cruciform plate bearing a short hollow spine.

Morphology:

Geological Range:
Last occurrence (top): within Early Pliensbachian Substage (188.00-192.90Ma, top in Pliensbachian stage). Data source: Bown & Cooper 1998
First occurrence (base): within Late Sinemurian Substage (192.90-196.30Ma, base in Sinemurian stage). Data source: Bown & Cooper 1998

Plot of occurrence data:

• Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
• Triangles indicate an event for which a precise placement has been suggested
• (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Mazaganella

Mazaganella pulla compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 20-9-2024 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10646 Go to Archive.is to create a permanent copy of this page - citation notes

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