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Orbicoelia fraterculus
Taxonomy
Orbicoelia fraterculus was named by Waterhouse and Piyasin (1970). Its type specimen is University of Toronto B573, a valve (Ventral valve), and it is not a trace fossil. Its type locality is Khao Phrik, Rat Buri, which is in a Wordian offshore shelf limestone/limestone in the Rat Buri Formation of Thailand.
Synonymy list
Year | Name and author |
---|---|
1970 | Orbicoelia fraterculus Waterhouse and Piyasin p. 145 figs. Pl 25, figs 16-26; pl 26, figs 1-4; text-figs 14,20 |
1976 | Orbicoelia fraterculus Grant p. 193 figs. Pl 52, figs 1-24 |
1991 | Orbicoelia fraterculus Sun p. 246 figs. Pl 6, figs 21-24 |
1994 | Orbicoelia fraterculus Yanagida and Pillevuit p. 92 figs. Pl 6, fig 4 |
2005 | Orbicoelia fraterculus Campi et al. p. 140 figs. Pl 6, figs B, D-F, H, N |
2006 | Orbicoelia fraterculus Chen and Shi p. 18 figs. Pl 5, figs 39-43; text-fig 11 |
2009 | Orbicoelia fraterculus Shen and Clapham p. 728 figs. Pl 5, figs 7-17 |
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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.
†Orbicoelia fraterculus Waterhouse and Piyasin 1970
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Diagnosis
No diagnoses are available
Measurements
part | N | mean | minimum | maximum | median | s.d. | |
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shell height | 66 | 4.86 | 1.70 | 13.0 | 5.30 | 2.77 |
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Source: superf = superfamily, c = class, p = phylum, uc = unranked clade | |||||
References: Nesnidal et al. 2013, Aberhan et al. 2004 |
Age range: base of the Artinskian to the top of the Capitanian or 290.10000 to 259.51000 Ma
Collections (19 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Artinskian | China (Xizang) | Orbicoelia fraterculus (118919) | |
Artinskian | China (Xinjiang) | Orbicoelia fraterculus (62816 62818 62820 62826) | |
Roadian | Thailand (Ratchaburi) | Orbicoelia fraterculus (40865 40866 40936) | |
Roadian | Thailand | Orbicoelia fraterculus (40868) | |
Roadian | Thailand (Trang) | Orbicoelia fraterculus (40869 40871 40879) | |
Wordian | Thailand (Ratchaburi) | Orbicoelia fraterculus (type locality: 40954) | |
Wordian - Capitanian | Oman | Orbicoelia fraterculus (97216) | |
Capitanian | Malaysia | Orbicoelia fraterculus (105035) | |
Wuchiapingian | Greece | Orbicoelia fraterculus (64171 64172 64173 64176) |