Batostoma
Batostoma sp. in longitudinal (left) and tangential (right) sections. Field of view is 1.0 mm. SMH collection.
Batostoma may be ramose or encrusting, and typically bears low monticules. Zooecia are round to oval and almost completely separated by polygonal mesozooecia, often with beaded tips. Diaphragms in exozone are thin and irregularly spaced. Styles vary in size and abundance, often inflecting and centered along zooecial walls.
Species
Batostoma? cornula (Cumings and Galloway, 1915)
Occurrence: Dillsboro
Reference: Brown and Daly, 1985
Also called Nicholsonella cornula
Not listed by Boardman, 1960
Batostoma implicatum (Nicholson, 1880)
Occurrence: Fulton, Economy, Southgate, McMicken
Reference: Bassler, 1906; Dalvé, 1948; Cuffey in Davis and Cuffey, 1998 (mention)
Originally named Chaetetes implicata. Also called Monticulipora (Heterotrypa) implicata. Includes Alecto nexilis James, 1875 and Ceramopora? irregularis.
Not listed by Boardman, 1960
Batostoma jamesi (Nicholson, 1874)
Occurrence: Fulton, Economy, Southgate, McMicken
Reference: Anstey and Perry, 1972; Karklins, 1984; Anstey and Wilson, 1996
Originally named Chaetetes jamesi. Also called Monticulipora (Heterotrypa) jamesi.
Not listed by Boardman, 1960
Batostoma maysvillense Nickles, 1905
Occurrence: Mount Hope
Reference: Dalvé, 1948; Boardman, 1960
Batostoma parcum Utgaard and Perry, 1964
Occurrence: Whitewater
Reference: Utgaard and Perry, 1964
Batostoma prosseri Cumings and Galloway, 1912
Occurrence: Waynesville, Liberty
Reference: Dalvé, 1948; Boardman, 1960
Batostoma varians (James, 1878)
Occurrence: Arnheim, Waynesville, Liberty, Whitewater, Saluda
Reference: Bassler, 1906; Utgaard and Perry, 1964; Brown and Daly, 1985; Schumacher et al. in Davis and Cuffey, 1998 (mention)
Originally named Chaetetes varians. Also called Monticulipora varians. Includes Batostoma variabile.
Not listed by Boardman, 1960
Has thin-walled, angular zooecia, with few mesopores, sparse diaphragms, and a subfrondescent zooarium.
