Daughter taxa (time control age-window is: 0-800Ma)![]() | ||||
| Acadialithus dennei Acadialithus with 6 elements in each wall cycle | ||||
| Acadialithus valentinei Acadialithus with 7 elements in each wall cycle | ||||
Distinguishing features:
Parent taxon (Nannoliths inc sed - radiate multielement): Radiate nanoliths formed of multiple elements but lacking a central diaphragm
This taxon: Squat tube-shaped nannoliths; wall formed of two vertically stacked cycles, with 6-7 elements per cycle; wide central opening; c-axes oblique
| LITHS: nannolith-radiate, circular, star-shaped, cylindrical, hollow, CROSS-POLARS: rim-unicyclic, R-prominent, |
| Lith size: 8->15µm; Segments: 6->7; Data source notes: size range of included species |
Geological Range:
Last occurrence (top): at top of Late Tithonian Substage (100% up, 143.1Ma, in Berriasian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Late Tithonian Substage (143.10-145.00Ma, base in Tithonian stage). Data source: Total of ranges of species in this database
Plot of occurrence data:
Howe, R. W. (2017). Acadialithus, a new nannofossil genus from offshore Eastern Newfoundland, Canada. Journal of Nannoplankton Research. 37(1): 61-66. gs Varol, O. & Bowman, A. R. (2019). Taxonomic revision of selected Late Jurassic (Tithonian) calcareous nannofossils and the application of mobile mounting. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen. 291: 65-87. gsReferences:

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Acadialithus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 15-8-2026
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10002 Go to Archive.is to create a permanent copy of this page - citation notes |
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