Sphaerochara latifasciata

Name

Sphaerochara latifasciata

Rank

Species

Generic Name

[Genus] Sphaerochara

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

37

Year

1957

Parent Taxon

[Genus] Sphaerochara

Fossil Status

gyrogonites

Stratigraphy

Albian

Location

Uinta County, southwestern Wyoming, USA

Paleoregion

America (North)

Data for Holotypus

Repository

U.S. Geological Survey, Denver, USA

Repository Number

491

Diagnosis

Fairly large spheroidal to obovate gyrogonites with pointed to narrowly rounded bases, broadly rounded summits, and wide (100/*) spirals. Gyrogonites range in length from 650/* to 800/A and in width from 500/A to TOO/A. Spirals wide; on most specimens ridges cellular and gently convex; on some specimens ridges intercellular, low and narrow, and separated by wide, shallow cellular furrows; on a few specimens spirals develop small regularly spaced knots about 100/A from center to center. Spirals ascend in a little less than two complete turns and distally turn onto somewhat flattened summit to meet in center along a wavy line or in a point slightly raised above general surface. Spiral walls thick along sides, from 50/u, to 100/A, thinning to about half that thickness on summit. Spiral ridges in a side view normally 9, a few specimens with 8 and some with 10.