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Trochiliscus liratus
Trochiliscus liratus R.E. Peck J. Paleontol., 8(2): 113. Jun 1934
- Name
- Trochiliscus liratus
- 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
- 113
- Year
- 1934
- Parent Taxon
- [Genus] Trochiliscus
- Fossil Status
- gyrogonites
- Stratigraphy
- Frasnian
- Location
- Bird's Hill, southwest of Rockford, Iowa, USA
- Paleoregion
- Laurussia (Laurentia)
Data for Holotypus
- Repository
- University of Iowa, Iowa, USA
- Repository Number
- 694
- Diagnosis
- Oogonium coronulate, spherical to elongate spherical, of medium size, ranging in height from 0.7 mm to 0.8 mm, higher than wide or with height and width subequal, greatest transverse diameter at or just below mid-height. Base broadly rounding, summit horizontally truncate. Ridges intercellular, eight, completing a half turn around the oogonium, equatorial angle 25° to 30°. The ridges are narrow, flat, of uniform width from base to summit, usually each with a small median groove. Cellular furrows wide and deep. Coronula cells eight, concave on the outer surface, corresponding in position to the cellular furrows and forming an erect parapet-like ring around the summit orifice, the inner surface of the coronula ring constituting a narrow funnel to the opening. Oospore membrane unknown.
