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Charniodiscus concentricus
This species is named on the basis of 12 disc-like impressions from this single locality, found on multiple bedding planes. The author discusses at length the possibility that Charniodiscus concentricus could be the basal disc of Charnia masoni (first described in the same publication), and figures this possibility in a reconstruction (p. 212, Pl. 13, fig. 3). The author concludes "It is concluded that Charnia masoni may most rationally be interpreted as an algal frond and that Charniodiscus concentricus may be the basal part of the same alga.... The only likely alternative is that they represent a primitive coelenterate of unknown affinity".
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Year | Name and author |
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1958 | Charniodiscus concentricus Ford |
2022 | Charniodiscus concentricus Pérez-Pinedo et al. pp. 785929-7 fig. 2A |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Reference | Diagnosis | |
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D. Pérez-Pinedo et al. 2022 | Charniodiscus with basal disc, stem, and a bifoliate frond, lacking a supporting backing sheet, composed of approximately 25 independent branches that were strongly curved inward and upward in life to form a sub-conical frond, which becomes lanceolate to ovate upon collapse/compression. |
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Source: g = genus | |||||
Reference: Laflamme et al. 2004 |
Collections (2 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Ediacaran | United Kingdom | Charniodiscus concentricus (153338) | |
Wonokan - Poundian | United Kingdom (England) | Charniodiscus concentricus (10287) |