Chasmatopora
![Specimen Photo](SMHChasmatopora1.jpg)
Chasmatopora sp.
SMH collection
![Specimen Photo](SMHChasmatopora2.jpg)
Chasmatopora sp.
SMH collection
![Specimen Photo](SMHChasmatoporaFront.jpg)
Chasmatopora sp. closeup of front of colony, showing zooecia
SMH collection
![Specimen Photo](SMHChasmatoporaBack.jpg)
Chasmatopora sp. closeup of smooth back of colony
SMH collection
Scale bar is 2 mm
Note that the 1953 bryozoan Treatise lists Chasmatopora as a junior synonym of Subretepora, a trepostome. Anstey and Wilson (1996) list Chasmatopora, as well as the closely related Phylloporina, both members of the Phylloporinina (Order Fenestrida) as occurring in the Ordovician of Ohio. They do not list Subretepora.
Species
Chasmatopora clathrata (Miller & Dyer)
Occurrence: Fairmount
Reference: Dalvé, 1948
Chasmatopora variolata (Ulrich)
Occurrence: Southgate, McMicken
Reference: Dalvé, 1948