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Hemithecella expansa
Taxonomy
Hemithecella expansa was named by Butts (1941) [Hemithecella expansa Ulrich &Bridge in Butts 1941]. It is not a trace fossil. Its type locality is Just north of De Busk Mill, 3 miles south of Glade Spring, which is in a Demingian carbonate limestone in the Chepultepec Formation of Virginia.
Entered
by P. Wagner on 2006-03-23; modified by P. Wagner on 2013-10-27
Synonymy list
| Year | Name and author |
|---|---|
| 1941 | Hemithecella expansa Butts pp. 19 - 20 figs. pl. 68 f. 6 |
| 1979 | Hemithecella expansa Runnegar et al. p. 1389 figs. pl. 1 f. 31-32 |
| 1995 | Hemithecella expansa Stinchcomb and Darrough pp. 58 - 60 figs. 6.7-6.15, 8.13, 8.14 |
| 2004 | Hemithecella expansa Vendrasco and Runnegar figs. 13.1-13.4 |
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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.
†Hemithecella expansa Butts 1941
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family | |||||
| Reference: Hendy 2009 | |||||
Collections (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Demingian | USA (Virginia) | Hemithecella expansa (type locality: 56651) | |
| Gasconadian | USA (Missouri) | Hemithecella expansa (64584) | |
| Tremadocian | USA (Virginia) | Hemithecella expansa (78881) | |
| Tremadoc | USA (Missouri) | Hemithecella expansa (8939 8940) Hemithecella sp. (8941 8943) |