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Sphenolithus
Cenozoic Taxa
Sphenolithus orphanknollensis Perch-Nielsen, 1971
Submitted by Jeremy Young on Fri, 06/02/2009 - 13:13- Login or register to post comments
- 87 reads
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Neogene: Sphenolithus
Paleogene: Sphenolithus orphanknollensis
Sphenolithus ciperoensis Bramlette and Wilcoxon, 1967
Submitted by Jeremy Young on Fri, 06/02/2009 - 13:13- Login or register to post comments
- 206 reads
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Neogene: Sphenolithus
Paleogene: Sphenolithus ciperoensis
Sphenolithus compactus Backman, 1980
Submitted by Jeremy Young on Fri, 06/02/2009 - 13:13- Login or register to post comments
- 102 reads
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Neogene: Sphenolithus
Paleogene: Sphenolithus compactus
Sphenolithus conicus Bukry, 1971
Submitted by Jeremy Young on Fri, 06/02/2009 - 13:13- Login or register to post comments
- 126 reads
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Neogene: Sphenolithus; Sphenolithus conicus
Paleogene: Sphenolithus conicus
Sphenolithus delphix Bukry, 1973
Submitted by Jeremy Young on Fri, 06/02/2009 - 13:13- Login or register to post comments
- 113 reads
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Neogene: Sphenolithus; Sphenolithus delphix
Paleogene: Sphenolithus delphix
Sphenolithus distentus (Martini, 1965) Bramlette & Wilcoxon 1967
Submitted by Jeremy Young on Fri, 06/02/2009 - 13:13- Login or register to post comments
- 224 reads
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Neogene: Sphenolithus
Paleogene: Sphenolithus distentus
Sphenolithus moriformis (Brönnimann & Stradner, 1960) Bramlette & Wilcoxon, 1967
Submitted by Jeremy Young on Fri, 06/02/2009 - 13:13- Login or register to post comments
- 297 reads
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Neogene: Sphenolithus; Sphenolithus moriformis
Paleogene: Sphenolithus moriformis
Sphenolithus Deflandre in Grassé, 1952
Submitted by Jeremy Young on Fri, 06/02/2009 - 13:13- Login or register to post comments
- 113 reads
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Neogene: Sphenolithus
Paleogene: Sphenolithus
Sphenolithus heteromorphus
Edited by Lyndsey on Thu, 10/03/2011 - 13:39
Sphenolithus heteromorphus Deflandre 1953
Description: Apical spine very well-developed. Lateral elements nearly as large as proximal elements.
Remarks: S. heteromorphus has a well developed quadrate base, in which the the upper part is nearly as large as the proximal part, which distinguishes it clearly from S. belemnos. Also the spine typically has a rather bulbous base in contrast to the straight-sided S. belemnos.
Size: Length 5-15 microns, varies considerably in all populations, possibly in part due to diagenetic overgrowth. Width usually c. 3-5 microns.
Original description:
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- 1706 reads
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Neogene: Sphenolithus; Sphenolithus heteromorphus
Sphenolithus delphix
Edited by Lyndsey on Thu, 10/03/2011 - 13:38
Sphenolithus delphix Bukry 1973
Description: Small sphenolith with single apical spine and flaring proximal cycle.
Remarks: This is the most common of a group of rather delicate spinose sphenoliths. The other described species are S. capricornutus and S. calyculus. All three have only been reported from zones NP25 and NN1, and they may be a single, rather variable, species.
Size: Described as 8 to 12 microns long (Bukry 1973), but smaller speciemns with similar morphology are usually more common.
Original description:
Synonym: Sphenolithus spp 1 & 2 Muller 1974a, pl. 4/3-8, 19/15-16.
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- 1429 reads
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Neogene: Sphenolithus; Sphenolithus delphix
Paleogene: Sphenolithus delphix
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