INA16 Athens - September 2017

Lithraphidites acutus

Short diagnosis:

Lithraphidites with four narrow, triangular processes projecting outwards from the rod

Daughter taxa (blue => in age window 0-300Ma)
				Lithraphidites acutus subsp. acutus Lithraphidites with four narrow, triangular processes projecting orthogonally from a position at or near the centre of the main rod.
				Lithraphidites acutus subsp. eccentricus Lithraphidites with four narrow, triangular processes projecting orthogonally from a position two thirds to three quarters along the main rod.

Taxonomy:

Farinacci & Howe catalog pages: Lithraphidites acutum * Lithraphidites acutum eccentricum *

Short diagnosis:

Lithraphidites with four narrow, triangular processes projecting outwards from the rod

Geological Range:
Last occurrence (top): at top of UC4b subzone (100% up, 94.4Ma, in Cenomanian stage). Data source: Burnett 1998 (zonal marker)
First occurrence (base): at base of UC3a subzone (0% up, 96.2Ma, in Cenomanian stage). Data source: Burnett 1998, fig.6.2

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
• Histogram - Neptune occurrence data from DSDP and ODP proceedings. Interpret with caution & read these notes
• Taxon plotted: , synonyms included - No occurrences of Lithraphidites acutus recorded in Neptune database Parent: Lithraphidites

Lithraphidites acutus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 20-8-2017 Taxon Search: Advanced Search AphiaID: not found Go to Archive.is to create a permanent copy of this page - citation notes

Comments (2)

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Jeremy Young (UK)

You are right - the species range should be the sum of the sub-species ranges. What has happened here is that when I added in the sub=species I used the ranges from Watkins & Bowdler 1984 without noticing that there was more precise range information on the species from Burnett 1998. I will change the sub-species ranges, thanks for pointing this out.

31st July 2017 12:13pm

Maurice Kevin Cooper

Hi Jeremy

How can the species L. acutus have a short stratigraphic range then both the sub species L. acutus acutus and L. acutus eccentricum. What is the correct range for this species and subspecies?

31st July 2017 12:06pm

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