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Aclistochara mundula
Aclistochara mundula R.E. Peck J. Paleontol., 15(3): 291. 1 May 1941
- Name
- Aclistochara mundula
- Rank
- Species
- Generic Name
- [Genus] Aclistochara
- Authors (Pub.)
- Peck R. E.
- Publication
- Lower Cretaceous Rocky Mountain nonmarine microfossils [1941/5]
- Journal
- Journal of Paleontology
- Volume
- 15
- Issue
- 3
- Page number
- 291
- Year
- 1941
- Parent Taxon
- [Genus] Aclistochara
- Fossil Status
- gyrogonites
- Stratigraphy
- Aptian
- Location
- Bear River, Lincoln County, Wyoming, USA
- Paleoregion
- America (North)
Data for Holotypus
- Repository
- University of Missouri, St. Louis, USA
- Repository Number
- 31016-5
- Diagnosis
- Oogonia small, averaging about 0.5 mm. in length and 0.37 mm. in width, maximum width at or below midheight; urn-shaped, with obtusely rounded bases and conspicu- ously truncated summits. Spiral ridges coni- monly intercellular, sharp and narrow, rarely cellular and flush. Equatorial angle usually 10? or less, a few between 10? and 15?, rarely as high as 18?. Summit opening comparatively large and generally giving the appearance that spirals end at the mar- gin, but well-preserved specimens show that spirals continue to the center of the opening, with the summit depressed for reception of coronula cells. No coronula cells preserved. 11 or 12 spirals visible in a lateral view.
Nomenclatural synonyms (basionyms)
Species
