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Ectogrammysia crassatis
Taxonomy
Ectogrammysia crassatis was named by Hoare et al. (1989). Its type specimen is USNM 435866, a shell, and it is not a trace fossil. Its type locality is Loc. 1. USGS 14369. Road cut on se side US 65, 0.8 km sw of Peyton Creek Bridge, which is in a Serpukhovian offshore grainstone/shale in the Imo Formation of Arkansas. It is the type species of Ectogrammysia.
Synonymy list
Year | Name and author |
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1989 | Ectogrammysia crassatis Hoare et al. p. 598 fig. 6.15–6.20 |
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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.
†Ectogrammysia crassatis Hoare et al. 1989
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: f = family, c = class | |||||
References: Hendy 2009, Aberhan et al. 2004 |
Age range: Serpukhovian or 330.90000 to 323.20000 Ma
Collections: one only
Time interval | Ma | Country or state | Original ID and collection number |
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Serpukhovian | USA (Arkansas) | Ectogrammysia crassatis (type locality: 5517) |