UGA Stratigraphy Lab

The data is in the strata


Specimen Photo Specimen Photo

(left) Atactoporella sp. encrusting Rafinesquina. Colony is 7 mm wide. CMC 51407.
(right) Atactoporella schucherti longitudinal section. Field of view is 1.5 mm. CMC 24673.

Atactoporella is typically encrusting, but can also be ramose to massive. Zooecia are thin-walled and bear diaphragms and cystiphragms, which often form overlapping series. Mesozooids are large and numerous, almost isolating zooids and bearing numerous diaphragms. Styles very numerous, causing zooecial openings to be petaloid.


Atactoporella multigranosa (Ulrich, 1879)
Occurrence: Fairmount, Bellevue, Corryville
Reference: Dalvé, 1948
Originally named Atactopora multigranosa.

Atactoporella mundula (Ulrich, 1879)
Occurrence: Fairmount, Bellevue, Arnheim
Reference: Brown and Daly, 1985; Cuffey in Davis and Cuffey, 1998 (mention)
Originally named Atactopora mundula.

Atactoporella newportensis Ulrich, 1883
Occurrence: Clays Ferry, Economy
Reference: Karklins, 1984
Also called Monticulipora newportensis.

Atactoporella ortoni (Nicholson, 1874)
Occurrence: Bellevue, Corryville, Mount Auburn
Reference: Dalvé, 1948 Originally named Chaetetes ortoni. Also called Monticulipora (Peronopora?) ortoni.

Atactoporella schucherti Ulrich, 1883
Occurrence: Waynesville, Whitewater
Reference: Dalvé, 1948

Atactoporella tenella (Ulrich, 1879)
Occurrence: Fairmount
Reference: Dalvé, 1948
Originally named Atactopora tenella.

Atactoporella typicalis Ulrich, 1883
Occurrence: Economy
Reference: Anstey and Perry, 1972; Karklins, 1984 (mention)