Parachasmatopora Morozova & Lavrentjeva, 1981

Ernst, Andrej & Carrera, Marcelo G., 2022, A cool-water bryozoan association from the La Pola Formation (Sandbian, Ordovician) of Argentine Precordillera, Geodiversitas 44 (20), pp. 563-601 : 590

publication ID	https://doi.org/ 10.5252/geodiversitas2022v44a20
publication LSID	urn:lsid:zoobank.org:pub:5EC74771-0B7B-494D-ADC8-79BECD097A3A
DOI	https://doi.org/10.5281/zenodo.6723178
persistent identifier	https://treatment.plazi.org/id/865C87FD-FFBF-FFFD-3934-FDE34B1CFBA0
treatment provided by	Admin
scientific name	Parachasmatopora Morozova & Lavrentjeva, 1981
status

Treatment

Genus Parachasmatopora Morozova & Lavrentjeva, 1981 View in CoL

TYPE SPECIES. — Parachasmatopora maennili Morozova & Lavrentjeva, 1981 View in CoL by original designation. Sandbian, Ordovician; Estonia.

OCCURRENCE. — Middle-Upper Ordovician; United States, Estonia, Argentina.

DIAGNOSIS. — Reticulated colonies consisting of anastomosing branches. Autozooecia long, having oblong-rectangular shape in deep tangential section, having weakly developed vestibule, arranged in two-three slightly alternating rows on branches. Nodes on low keels present. Cross-section of branches rounded; their dorsal wall thin, carrying thin longitudinal ribs and microacanthostyles.

COMPARISON

Parachasmatopora Morozova & Lavrentjeva, 1981 differs from Chasmatopora Eichwald, 1855 in having 2-3 rows of autozooecia on branches instead of 4 in Chasmatopora .