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Clavator bilateralis
Clavator bilateralis R.E. Peck Profess. Pap. U.S. Geol. Surv., 294(A): 17. Aug 1957
- Name
- Clavator bilateralis
- Rank
- Species
- Generic Name
- [Genus] Clavator
- 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
- 17
- Year
- 1957
- Parent Taxon
- [Genus] Clavator
- Fossil Status
- gyrogonites
- Stratigraphy
- Aptian
- Location
- Above top of the Sundance along east flank of the Wind River Mountains 3-4 miles west and northwest of Lander, Fremont County, Wyoming, USA
- Paleoregion
- America (North)
Data for Holotypus
- Repository
- U.S. Geological Survey, Denver, USA
- Repository Number
- 462
- Diagnosis
- Utricles strongly sculptured, roughly quadrangular in cross section, irregularly bilateral, small, ranging from 500/u to 600/* in length and 400/* to 500/A in width, composed of 2 short and 2 long vertical units. Two lancet-shaped short vertical units expand rapidly above base and contract into a single narrow vertical ridge below the summit, consist of broad flat or slightly concave lateral ridges and a central furrow of uniform width. Two longer units differ in structure from shorter units and from each other. One consists of a long deep furrow extending from the base to past summit, expanding in width gradually toward summit. Other long unit extends from base to about midheight as a narrow ridge, then widens rapidly, becoming concave in the center to form a conspicuous round depression above which the lateral ridges flare. Both long units extend above summit, and their distal ends are separated by a deep smooth furrow of uniform width that crosses from end of one short unit to the other. Units separated from adjoining units by deep furrows.
