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.[1][2]

Proaulopora
Temporal range: Lower Cambrian–Upper Ordovician
Scientific classification
Domain: Bacteria
Phylum: Cyanobacteria
Class: Cyanophyceae
Order: Nostocales
Genus: †Proaulopora
Vologdin in Krasnopeeva, 1937
Type species
Proaulopora rarissima
Vologdin, 1937
Synonyms[1]
  • 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.[3][4] In 2020, the genus was assigned to the cyanobacteria order Nostocales.[5]

Proaulopora resembles some species of the extant rivulariacean genus Dichothrix, and has also been compared with the genus Calothrix.[2][5]

Species

The genus contains the following species:[6][7][5]

  • 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[5]
  • Proaulopora pachydermatica Liu, Wu, Yang & Riding, 2016[2]
  • Proaulopora rarissima Vologdin, 1937 (Synonyms: Proaulopora sajanica Korde, 1960; Proaulopora flexuosa Korde, 1973)
  • Proaulopora recta Korde, 1973

As Vologdinella K.B. Korde, the following species are listed on AlgaeBase:[8]

  • Vologdinella fragilis Korde
  • Vologdinella grandis Korde
  • Vologdinella pulchra Korde

As Proaulopora is not listed on AlgaeBase, it is unknown whether the above species have been transferred to the genus or have become synonyms.

References
  1. Riding, R. (1991). "Cambrian Calcareous Cyanobacteria and Algae". In Riding, R. (ed.). Calcareous Algae and Stromatolites. Berlin, Heidelberg: Springer. pp. 305–334. doi:10.1007/978-3-642-52335-9_16. ISBN 978-3-642-52337-3.
  2. Liu, Lijing; Wu, Yasheng; Yang, Haijun; Riding, Robert (2016). "Ordovician calcified cyanobacteria and associated microfossils from the Tarim Basin, Northwest China: systematics and significance" (PDF). Journal of Systematic Palaeontology. 14 (3): 183–210. doi:10.1080/14772019.2015.1030128. S2CID 129684955.
  3. Luchinina, V. А. (1975). Палеоальгологическая характерiiстика раннего кембрия сибирской платформы [Palaeoalgological characteristics of the Early Cambrian of the Siberian Platform] (PDF). USSR Academy of Sciences, Transactions of the Institute of Geology and Geophysics, Siberian Branch, Novosibirsk (in Russian). 216: 1–99.
  4. Pospelov, A.G.; Pelman, Yu L.; Zhuravleva, L.T.; Luchinina, V.A.; Kuznetsova, V.G.; Esakova, N.V.; Ermak, V.V.; Akasarina, N.A. (1995). "Biostratigraphy of the Kiya Rives section". Annales de Paléontologie. 81 (4): 169–237.
  5. Lijing Liu; Yasheng Wu; Hongping Bao; Hongxia Jiang; Lijing Zheng; Yanlong Chen (2020). "Diversity and systematics of Middle-Late Ordovician calcified cyanobacteria and associated microfossils from Ordos Basin, North China". Journal of Paleontology. 95: 1–23. doi:10.1017/jpa.2020.82. S2CID 226349226.
  6. Luchinina, V. А. (1971). "R систематике рода Proaulopora Vologdin". In Voszhennikova, Т. Р. (ed.). Водоросли палеозоя и мезозоя Сибири. К III Международной палинологической конференции. [Algae of the Рaleozoic and Mezozoic of Siberia. For the III-d International Conference оп Palynology] (in Russian). Moscow: Nauka. pp. 5–8.
  7. Korde, K.B. (1973). Водоросли кембрия [Cambrian algae]. Transactions of the Institute of Palaeontology (in Russian). 39. Moscow: USSR Academy of Sciences. pp. 224–235. ISSN 0376-1444.
  8. Guiry, M.D.; Guiry, G.M. (2018). "Vologdinella K.B.Korde". AlgaeBase. National University of Ireland, Galway. Retrieved 6 April 2019.

Further reading
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