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Acanthichnus
Taxonomy
Acanthichnus was named by Hitchcock (1858).
It was assigned to Hexapoda by Hitchcock (1898); to Insecta by Lull (1915); and to Ichnofossils by Hantzschel (1975).
It was assigned to Hexapoda by Hitchcock (1898); to Insecta by Lull (1915); and to Ichnofossils by Hantzschel (1975).
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1858 | Acanthichnus Hitchcock p. 150 |
| 1898 | Acanthichnus Hitchcock p. 402 |
| 1915 | Acanthichnus Lull p. 56 |
| 1975 | Acanthichnus Hantzschel |
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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. †Acanthichnus Hitchcock 1858
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. Hantzschel 1975 | Linear tracks consisting of 2 parallel rows of short straight strokelike impressions mostly slightly turned outward; tracks very different in width, position, and length of impressions of feet. |
Measurements
No measurements are available
No ecological data are available
Age range: base of the Norian to the top of the Hettangian or 227.30000 to 199.50000 Ma
Collections (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Norian | USA (New Mexico) | A. sp. (84021) A. tardigradus (46560) | |
| Norian - Rhaetian | USA (Colorado) | A. sp. (179080) | |
| Hettangian | USA (New Jersey) | Semionotus sp. (62838) | |
| Hettangian | USA (Massachusetts) | A. sp. (55331) A. trilinearis, A. alternans, A. saltatorius, A. cursorius, A. sp., A. aguineus (52986) | |
| Hettangian - Sinemurian | USA (Connecticut) | A. cursorius (53000) |