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Taxonomy
Gerarus collaris was named by Handlirsch (1911). Its type specimen is YPM 34, an exoskeleton, and it is an impression. Its type locality is Mazon Creek (YPM collection), which is in a Westphalian D deltaic mudstone in the Carbondale Formation of Illinois.
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1911 | Gerarus collaris Handlirsch p. 314 figs. Fig 18 |
| 1911 | Gerarus longicollis Handlirsch p. 315 figs. Fig 21 |
| 1919 | Gerarus collaris Handlirsch p. 540 |
| 1919 | Gerarus longicollis Handlirsch p. 540 |
| 1922 | Gerarus collaris Handlirsch p. 75 |
| 1922 | Gerarus longicollis Handlirsch p. 75 |
| 1983 | Gerarus collaris Burnham p. 26 fig. 12,13 |
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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.
†Gerarus collaris Handlirsch 1911
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Invalid names: Gerarus longicollis Handlirsch 1911 [synonym]
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: Westphalian D or 309.80000 to 307.50000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Westphalian D | USA (Illinois) | Gerarus collaris (21981) Gerarus collaris, Gerarus longicollis (type locality: 112630) |