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Taxonomy
Gerarus mazonus was named by Scudder (1885). It is an impression. Its type locality is Mazon Creek, USNM Lacoe Collection, which is in a Westphalian D interdistributary bay mudstone in the Carbondale Formation of Illinois.
Synonymy list
Year | Name and author |
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1885 | Gerarus mazonus Scudder p. 344 figs. Pl 32, fig 7 |
1906 | Gerarus mazonus Handlirsch p. 148 figs. Pl XV fig 7 |
1922 | Gerarus mazonus Handlirsch p. 75 |
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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 mazonus Scudder 1885
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: c = class, p = phylum | |||||
References: Kiessling 2004, Bush and Bambach 2015 |
Age range: Westphalian D or 309.80000 to 307.50000 Ma
Collections: one only
Time interval | Ma | Country or state | Original ID and collection number |
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Westphalian D | USA (Illinois) | Gerarus mazonus (type locality: 21981) |