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Discomyorthis
Taxonomy
Discomyorthis was named by Johnson (1970) [Sepkoski's age data: D Gedi-l D Emsi Sepkoski's reference number: 25]. Its type is Orthis musculosa.
It was assigned to Orthida by Johnson (1970), Sepkoski (2002); and to Rhipidomellinae by Williams et al. (2000), Boucot et al. (2008).
It was assigned to Orthida by Johnson (1970), Sepkoski (2002); and to Rhipidomellinae by Williams et al. (2000), Boucot et al. (2008).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1970 | Discomyorthis Johnson p. 84 |
| 2000 | Discomyorthis Williams et al. p. 818 |
| 2002 | Discomyorthis Sepkoski |
| 2008 | Discomyorthis Boucot et al. |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. G. Johnson 1970 | Large convexiplane rhipidomellids like Dalejina internally, but with very large, flabellate ventral diductor scars. |
Measurements
No measurements are available
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| Source: o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004 | |||||
Age range: base of the Lochkovian to the top of the Eifelian or 419.62000 to 387.95000 Ma
Collections (12 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Lochkovian | USA (New York) | D. sp. (24815) | |
| Helderbergian | USA (California) | D. sp. (24870) | |
| Pragian | USA (New York) | D. sp. (600 601) | |
| Pragian | Canada (Quebec) | D. musculosa (598 599) | |
| Pragian - Emsian | China (Nei Mongol) | D. sp. (25791) | |
| Early/Lower Emsian | China (Heilongjiang) | D. kinsuiensis (25844 25845) | |
| Emsian | USA (Nevada) | D. musculosa (164794) | |
| Emsian - Eifelian | Brazil (Para) | D. sp. (37138) | |
| Eifelian | Brazil (Para) | D. sp. (37137) |