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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Exochognathus
Taxonomy
Exochognathus was named by Pollock et al. (1970).
It was assigned to Conodontophorida by Rexroad and Nicoll (1972).
It was assigned to Conodontophorida by Rexroad and Nicoll (1972).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1970 | Exochognathus Pollock et al. |
| 1972 | Exochognathus 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.
G. †Exochognathus Pollock et al. 1970
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†Exochognathus brassfieldensis Branson and Branson 1947
†Exochognathus expansus Nicoll and Rexroad 1969
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order | |||||
| Reference: Aberhan et al. 2004 | |||||
Age range: base of the Aeronian to the top of the Llandovery or 440.80000 to 433.40000 Ma
Collections (67 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Silurian | USA (Indiana) | Trichonodella expansa (180923 180926 180936) | |
| Rhuddanian - Aeronian | Russian Federation (Siberia) | E. caudatus (206465 206484 206541 206542 206543 206560) | |
| Llandovery | USA (Ohio) | E. brassfieldensis (181742 182044) E. brevialatus (182046 182050) E. brevialatus, E. caudatus (182125) E. brevialatus, E. caudatus, E. expansus (182127) E. caudatus (182039 182045 182048 182053) E. caudatus, E. detortus, E. brassfieldensis (182126) E. caudatus, E. expansus (182124) E. expansus (181743) | |
| Llandovery | USA (Indiana) | Trichonodella brassfieldensis (180881 180884 180894 180895 180898 180913 180914 180916 180931) Trichonodella expansa (180891 180906 180935) | |
| Llandovery | USA (California) | E. sp. A, E. sp. B (226056) | |
| Llandovery | USA (Kentucky) | E. brassfieldensis (181841) E. brevialatus (181745 181751 181801) E. brevialatus, E. brassfieldensis (181809) E. brevialatus, E. caudatus, E. detortus, E. brassfieldensis, E. expansus (181737 181739) E. brevialatus, E. caudatus, E. detortus, E. expansus (181744) E. caudatus (181746 181753 181830 181831 181834 181835 181839 181843) E. caudatus, E. brassfieldensis (181747) E. caudatus, E. brevialatus, E. brassfieldensis, E. expansus (181748) E. caudatus, E. detortus (181757 181827) E. caudatus, E. detortus, E. brassfieldensis (181734) E. caudatus, E. detortus, E. brassfieldensis, E. expansus (181828 181829) E. caudatus, E. detortus, E. brevialatus (181832) E. caudatus, E. expansus (181750 181833) E. detortus (181800 181805) | |
| Aeronian | China | E. brassfieldensis (197396) | |
| Telychian - Sheinwoodian | USA (Indiana) | Trichonodella brassfieldensis, Trichonodella expansa (180901) Trichonodella expansa (180882 180917) |