UGA Stratigraphy Lab

The data is in the strata


Specimen Photo Specimen Photo

Rhombotrypa sp. in longitudinal (left) and oblique (right) sections. Field of view is 1.0 mm. SMH collection.

Rhombotrypa is a large ramose form, unique in its square zooecia in the endozone, best seen in a transverse section. Zooecia are thick-walled, with numerous diaphragms in the exozone. Mesozooids and styles are absent.


Rhombotrypa multitabulata Utgaard and Perry, 1964
Occurrence: Whitewater
Reference: Utgaard and Perry, 1964

Rhombotrypa quadrata (Rominger, 1866)
Occurrence: Waynesville, Liberty, Whitewater, Saluda, Elkhorn
Reference: Utgaard and Perry, 1964; Brown and Daly, 1985; Schumacher et al. in Davis and Cuffey, 1998 (mention)
Originally named Chaetetes quadratus. Also called Monticulipora quadrata, Monotrypella quadrata.

Rhombotrypa subquadrata (Ulrich, 1882)
Occurrence: Arnheim, Waynesville, Liberty
Reference: Brown and Daly, 1985 (mention)