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IRMNG taxon detailsRenalcis Vologdin, 1932 †
marine,
fossil only
Not documented
Taxonomic remark Luchinina (2009) interprets this genus, among others, as a life cycle stage of Epiphyton, however other workers e.g. Liu et...
Taxonomic remark Luchinina (2009) interprets this genus, among others, as a life cycle stage of Epiphyton, however other workers e.g. Liu et al., 2015 treat it as [micro]problematica at this time. From Liu et al.: Korde (1961, 1973), Maslov & Korde (1963) and Saltovskaya (1975) all regarded Renalcis as a cyanobacterium. Hofmann (1975, p. 1131) suggested Renalcis might “represent remains of peripherally pigmented, gelatinous colonies of Chroococcalean algae which have undergone carbonate diagenesis involving obliteration of cell morphology”. This view was supported by Pratt (1984). Luchinina (in Chuvashov et al. 1987) regarded Chabakovia, Renalcis, Izhella and Angulocellularia as chroococcaleans and compared Renalcis with Microcystis. A cyanobacterial affinity for Renalcis was favoured by Riding (1991a) and Turner et al. (2000). Chafetz & Guidry (1999) considered that Renalcis (and Epiphyton) could be produced by precipitation induced by communities of phototrophic and heterotrophic bacteria. Similarly, Stephens & Sumner (2002) proposed that Renalcis could be fossilized biofilm clusters which calcified due to heterotrophic bacterial activity. We regard Renalcis and similar genera as possible bacterial calcified Microproblematica. [details]
IRMNG (2023). Renalcis Vologdin, 1932 †. Accessed at: https://irmng.org/aphia.php?p=taxdetails&id=11918269 on 2024-10-12
Date action by
basis of record
Liu, L.; Wu, Y.; Yang, H.; Riding, R. (2015). Ordovician calcified cyanobacteria and associated microfossils from the Tarim Basin, Northwest China: systematics and significance. <em>Journal of Systematic Palaeontology.</em> 14(3): 183-210., available online at https://doi.org/10.1080/14772019.2015.1030128 [details]
additional source Luchinina, V. A. (2009). Remalcis [sic] and Epiphyton as different stages in the life cycle of calcareous algae. <em>Paleontological Journal.</em> 43(4): 463-468., available online at https://doi.org/10.1134/s0031030109040169 note: alternative taxonomic treatment and proposed synonymy [details] Unverified
Taxonomic remark Luchinina (2009) interprets this genus, among others, as a life cycle stage of Epiphyton, however other workers e.g. Liu et al., 2015 treat it as [micro]problematica at this time. From Liu et al.: Korde (1961, 1973), Maslov & Korde (1963) and Saltovskaya (1975) all regarded Renalcis as a cyanobacterium. Hofmann (1975, p. 1131) suggested Renalcis might “represent remains of peripherally pigmented, gelatinous colonies of Chroococcalean algae which have undergone carbonate diagenesis involving obliteration of cell morphology”. This view was supported by Pratt (1984). Luchinina (in Chuvashov et al. 1987) regarded Chabakovia, Renalcis, Izhella and Angulocellularia as chroococcaleans and compared Renalcis with Microcystis. A cyanobacterial affinity for Renalcis was favoured by Riding (1991a) and Turner et al. (2000). Chafetz & Guidry (1999) considered that Renalcis (and Epiphyton) could be produced by precipitation induced by communities of phototrophic and heterotrophic bacteria. Similarly, Stephens & Sumner (2002) proposed that Renalcis could be fossilized biofilm clusters which calcified due to heterotrophic bacterial activity. We regard Renalcis and similar genera as possible bacterial calcified Microproblematica. [details]
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