proaulopora proaulopora proaulopora is a cambrian–ordovician fossil genus of calcareous algae. it has been variously thought to belong to the green algae, red algae or cyanobacteria. it was originally established by the russian paleontologist aleksandr grigoryevich vologdin in 1937, for species known from the lower cambrian of the western altai mountains. proauloporatemporal range: scientific classification domain: bacteria phylum: cyanobacteria class: cyanophyceae order: nostocales genus: †proauloporavologdin in krasnopeeva, 1937 type species proaulopora rarissimavologdin, 1937 synonyms amganella reitlinger, 1959 palaeonites maslov, 1956 tubophyllum krasnopeeva, 1955 vologdinella korde, 1957 in some older classifications of fossil algae genera, proaulopora is placed in the family proauloporaceae in order proauloporales. in 2020, the genus was assigned to the cyanobacteria order nostocales. proaulopora resembles some species of the extant rivulariacean genus dichothrix, and has also been compared with the genus calothrix. species the genus contains the following species: proaulopora composita korde, 1973 proaulopora crassa korde, 1973 proaulopora extincta korde, 1973 proaulopora glabra krasnopeeva, 1937 (synonyms: epiphyton (?) jacutii maslov, 1937; tubophyllum victori krasnopeeva, 1955; palaeonites jacutii maslov, 1956; vologdinella fragile korde, 1957) proaulopora longa korde, 1973 proaulopora microspora korde, 1973 proaulopora ordosia liu, et al., 2020 proaulopora pachydermatica liu, wu, yang & riding, 2016 proaulopora rarissima vologdin, 1937 (synonyms: proaulopora sajanica korde, 1960; proaulopora flexuosa korde, 1973) proaulopora recta korde, 1973 as vologdinella k.b. korde, the following additional species are listed on algaebase: vologdinella grandis korde, 1973 vologdinella pulchra korde, 1973 it is unknown whether the above species have been transferred to proaulopora or have become synonyms.