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Obtusochara maedleri
Obtusochara maedleri R.E. Peck Profess. Pap. U.S. Geol. Surv., 294(A): 38. Aug 1957
- Name
- Obtusochara maedleri
- Rank
- Species
- Original spelling
- madleri
- Generic Name
- [Genus] Obtusochara
- Authors (Pub.)
- Peck R. E.
- Publication
- North American Mesozoic Charophyta [1957/8]
- Journal
- Professional Papers / United States Geological Survey
- Volume
- 294
- Issue
- A
- Page number
- 38
- Year
- 1957
- Parent Taxon
- [Genus] Obtusochara
- Fossil Status
- gyrogonites
- Stratigraphy
- Aptian
- Location
- North side of Fall River road 3.2 miles southeast of Hot Springs, S. Dakota, USA
- Paleoregion
- America (North)
Data for Holotypus
- Repository
- U.S. Geological Survey, Denver, USA
- Repository Number
- 370
- Diagnosis
- Small subcyclindrical gyrogonites ranging from 250/* to 300/* in length and 200/* to 225/* in width, with rounded bases and flattened summit areas. Spiral ridges intercellular, sharp and narrow, making approximately V/2 turns in their ascent and turning rather abruptly into a horizontal position on summit, meeting in center of summit at a point or along a short irregular line. Calcification very thin on summit area; intercellular ridges reduced in height, and spirals on summit broken away on many specimens, leaving a shallow concavity. Basal opening minute; summit opening not present. Seven or eight spiral ridges in a lateral view.
