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Dicoelosia jonesridgensis
Taxonomy
Dicoelosia jonesridgensis was named by Ross and Dutro (1966) [= Dicoelosia sp. Dutro & Ross 1964 53.].
Sister species lacking formal opinion data
Synonymy list
Year | Name and author |
---|---|
1966 | Dicoelosia jonesridgensis Ross and Dutro |
2012 | Dicoelosia jonesridgensis Rasmussen et al. p. 45 figs. Plate 13, figures 10–12 |
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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.
†Dicoelosia jonesridgensis Ross and Dutro 1966
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Diagnosis
Reference | Diagnosis | |
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C. M. O. Rasmussen et al. 2012 | Shell small, concavo-convex in profile and bilobate in outline, about 90% as long as wide. Cardinal angles obtuse; maximum width near anterior margin; anterior commissure strongly uniplicate. Ventral valve evenly convex. Interarea relatively high, short and strongly apsacline; delthyrium high and relatively narrow. Dorsal valve concave. Notothyrium open and relatively wide. Ornamentation weakly costate. Internal features not preserved except for a dorsal median septum. |
Measurements
No measurements are available
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Source: g = genus, o = order, c = class, p = phylum, uc = unranked clade | |||||
References: Nesnidal et al. 2013, Williams et al. 2000, Aberhan et al. 2004 |
Collections (10 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Rawtheyan - Pusgillian | USA (Alaska) | Dicoelosia jonesridgensis (164855) | |
Onnian - Cautleyan | Belgium | Dicoelosia jonesridgensis (185313) | |
Ashgill | USA (Alaska) | Dicoelosia jonesridgensis (163113) | |
Ashgill | USA (California) | Dicoelosia jonesridgensis (100546) | |
Ashgillian | USA (California) | Dicoelosia jonesridgensis (99692 99696 99697 99698 100637 100639) |