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Exochognathus expansus
Taxonomy
Trichonodella expansa was named by Nicoll and Rexroad (1969).
It was recombined as Exochognathus expansus by Rexroad and Nicoll (1972).
It was recombined as Exochognathus expansus by Rexroad and Nicoll (1972).
Synonymy list
| Year | Name and author |
|---|---|
| 1969 | Trichonodella expansa Nicoll and Rexroad |
| 1972 | Exochognathus expansus Rexroad and Nicoll |
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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.
†Exochognathus expansus Nicoll and Rexroad 1969
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, subp = subphylum | |||||
| References: Aberhan et al. 2004, Carroll 1988 | |||||
Age range: base of the Telychian to the top of the Llandovery or 438.60000 to 432.90000 Ma
Collections (20 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Llandovery | USA (Indiana) | Trichonodella expansa (180891 180906 180935) | |
| Llandovery | USA (Kentucky) | Exochognathus expansus (181737 181739 181744 181748 181750 181828 181829 181833) | |
| Llandovery | USA (Ohio) | Exochognathus expansus (181743 182124 182127) | |
| Silurian | USA (Indiana) | Trichonodella expansa (180923 180926 180936) | |
| Telychian - Sheinwoodian | USA (Indiana) | Trichonodella expansa (180882 180901 180917) |