Catalog entries: Streptochilus cetacensis
Type images:Distinguishing features:
Parent taxon (Streptochilus): Like Chiloguembelina but with an internal plate connecting successive chambers, a prominent extension of an apertural collar, and a smoother surface texture.
This taxon: Triangular in shape and flared
Wall type:
Character matrix
test outline: | Subtriangular | chamber arrangement: | Biserial | edge view: | Compressed | aperture: | Interiomarginal |
sp chamber shape: | Subrectangular | coiling axis: | N/A | periphery: | N/A | aperture border: | Thin flange |
umb chbr shape: | Subrectangular | umbilicus: | N/A | periph margin shape: | Narrowly rounded | accessory apertures: | None |
spiral sutures: | Moderately depressed | umb depth: | N/A | wall texture: | Smooth | shell porosity: | Microperforate: <1µm |
umbilical or test sutures: | Moderately depressed | final-whorl chambers: | 2-2 | N.B. These characters are used for advanced search. N/A - not applicable |
Geological Range:
Last occurrence (top): within Early Miocene Sub-Epoch (15.97-23.03Ma, top in Burdigalian stage). Data source: Smart & Thomas 2007
First occurrence (base): within Early Miocene Sub-Epoch (15.97-23.03Ma, base in Aquitanian stage). Data source: Smart & Thomas 2007
Plot of occurrence data:
Smart, C. W. & Thomas, E. (2007). Emendation of the genus Streptochilus Brönnimann and Resig 1971 (Foraminifera) and new species from the lower Miocene of the Atlantic and Indian Oceans. Micropaleontology. 53(1-2): 73-103, 103 figures, 113 lates, 101 table. gsReferences:
Streptochilus cetacense compiled by the pforams@mikrotax project team viewed: 9-9-2024
Short stable page link: https://mikrotax.org/pforams/index.php?id=104222 Go to Archive.is to create a permanent copy of this page - citation notes |