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Trochiliscus decacostatus
Trochiliscus decacostatus R.E. Peck J. Paleontol., 8(2): 109. Jun 1934
- Name
- Trochiliscus decacostatus
- Rank
- Species
- Generic Name
- [Genus] Trochiliscus
- Authors (Pub.)
- Peck R. E.
- Publication
- The North American Trochiliscids, Paleozoic Charophyta [1934/6]
- Journal
- Journal of Paleontology
- Volume
- 8
- Issue
- 2
- Page number
- 109
- Year
- 1934
- Parent Taxon
- [Genus] Trochiliscus
- Fossil Status
- gyrogonites
- Stratigraphy
- Tournaisian
- Location
- Williamsburg, Missouri, USA
- Paleoregion
- Laurussia (Laurentia)
Data for Syntypus
- Repository
- University of Missouri, St. Louis, USA
- Repository Number
- 31003-1
- Diagnosis
- Oogonium coronulate, subspherical, medium large, averaging about 0.8 mm in height, wider than high, with greatest transverse diameter about mid-height. Base and summit deeply truncate, the summit more deeply than the base. Ridges intercellular, ten, completing about a fourth turn around the oogonium, equatorial angle 30° to 35°. The ridges are flat and of uniform medium width from base to summit. Intercellular furrows narrow and deep. Coronula cells ten, deeply concave on outer surface, corresponding in position with the cellular furrows and forming a suberect parapet- like ring around the summit orifice, the inner surface of the coronula ring constituting a broad funnel to the opening. Oospore membrane unknown.
