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 in 1937, for species known from the Lower Cambrian of the western Altai Mountains.
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:
As "Vologdinella" , the following species are listed on AlgaeBase:
As "Proaulopora" is not listed on AlgaeBase, it is unknown whether the above species have been transferred to the genus or have become synonyms.