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Penthetria immutabilis
Insecta - Diptera - Bibionidae
Taxonomy
Hesperinus immutabilis was named by Melander (1949). Its type specimen is USNM 112554, an exoskeleton, and it is a compression fossil. Its type locality is Florissant (USNM Collection), which is in a Chadronian lacustrine - large shale in the Florissant Formation of Colorado.
It was recombined as Plecia immutabilis by Fitzgerald (1999); it was recombined as Penthetria immutabilis by Skartveit (2009).
It was recombined as Plecia immutabilis by Fitzgerald (1999); it was recombined as Penthetria immutabilis by Skartveit (2009).
Synonymy list
| Year | Name and author |
|---|---|
| 1949 | Hesperinus immutabilis Melander p. 20 fig. 17 |
| 1999 | Plecia immutabilis Fitzgerald p. 185 fig. 5 |
| 2009 | Penthetria immutabilis Skartveit p. 5 |
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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.
†Penthetria immutabilis Melander 1949
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: c = class, p = phylum | |||||
| References: Bush and Bambach 2015, Kiessling 2004 | |||||
Age range: Chadronian or 37.20000 to 33.90000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Chadronian | USA (Colorado) | Hesperinus immutabilis (type locality: 124624) |