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Neospirifer amphigyus
Taxonomy
Neospirifer amphigyus was named by Cooper and Grant (1976). Its type specimen is USNM 152894y, a shell (Articulated shell), and it is not a trace fossil.
It was recombined as Trigorhium amphigyus by Waterhouse (2001) and Waterhouse (2004).
It was recombined as Trigorhium amphigyus by Waterhouse (2001) and Waterhouse (2004).
Sister species lacking formal opinion data
Synonymy list
Year | Name and author |
---|---|
1976 | Neospirifer amphigyus Cooper and Grant p. 2175 figs. Pl 592, fig 11; pl 593, figs 1-15; pl 594, figs 1-11 |
2001 | Trigorhium amphigyus Waterhouse |
2004 | Trigorhium amphigyus Waterhouse |
2005 | Neospirifer amphigyus Sour-Tovar et al. p. 31 fig. 4f,g |
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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.
†Neospirifer amphigyus Cooper and Grant 1976
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Diagnosis
No diagnoses are available
Measurements
part | N | mean | minimum | maximum | median | s.d. | |
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shell height | 11 | 10.5 | 3.90 | 35.0 | 10.0 | 9.05 |
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Source: o = order, c = class, p = phylum, uc = unranked clade | |||||
References: Aberhan et al. 2004, Nesnidal et al. 2013 |
Collections (14 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Asselian | Mexico | Neospirifer amphigyus (117974) | |
Roadian | USA (Texas) | Neospirifer amphigyus (43548 43551 43553 81650 105592 105741 105887 105932 105933) | |
Roadian - Wordian | USA (Texas) | Neospirifer amphigyus (106046) | |
Wordian | USA (Texas) | Neospirifer amphigyus (43550 106290 106291) |