Back
Clavator minutus
Clavator minutus R.E. Peck Profess. Pap. U.S. Geol. Surv., 294(A): 17. Aug 1957
- Name
- Clavator minutus
- 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
- Along 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
- 358
- Diagnosis
- Small utricles about 400 µ long and 300 µ wide, composed of 6 vertical or almost vertical units. Three units originate around basal opening as comparatively large narrow ridges, broaden distally, becoming concave in center, reaching greatest width near summit, and then narrowing and ending as blunt points surrounding shallow summit depression. Three alternating units originate around basal opening as broad flat or slightly concave ridges. These ridges become shallowly concave and broaden rapidly to about midheight, then contract and end near level of greatest width of longer units. Ridge units separated by broad and deep furrows. Attachment scar at center of base, about lOOju, wide. Free gyrogonites not known. Sections of utricles indicate that gyrogonite is very thin walled, of normal shape for genus, about 100 µ, long, and 200-250 µ wide. Vegetative parts unknown.
