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Arthrophycus
Taxonomy
Arthrophycus was named by Hall (1852). It is considered to be a form taxon. It was considered unknown by Rindsberg and Martin (2003), Seitz and Brandt (2018).
It was assigned to Arthrophycidae by Rindsberg and Martin (2003); and to Ichnofossils by Hantzschel (1975), Seitz and Brandt (2018).
It was assigned to Arthrophycidae by Rindsberg and Martin (2003); and to Ichnofossils by Hantzschel (1975), Seitz and Brandt (2018).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1852 | Arthrophycus Hall p. 4 |
| 1975 | Arthrophycus Hantzschel |
| 2003 | Arthrophycus Rindsberg and Martin |
| 2018 | Arthrophycus Seitz and Brandt |
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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. †Arthrophycus Hall 1852
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†Arthrophycus brongniartii Harlan 1832
†Arthrophycus harlani Conrad 1852
†Arthrophycus lateralis Seilacher 1997
†Arthrophycus minimus Mangano et al. 2005
†Arthrophycus parallelus Brandt et al. 2010
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. Hantzschel 1975 | Bundles of annulated curved burrows, simple or branched, subquadrate in cross section, mostly 1 to 2 cm in diameter, up to 60 cm long, commonly bilobate with median longitudinal depression; surface showing strong, very regularly space transverse ridges; internal chevron-shaped filling. | |
| A.K. Rindsberg and A.J. Martin 2003 | Subhorizontal to oblique, straightish to curved, bilaterally symmetrical burrows with fill arranged in an imbricate series of spoonlike pads; cross section subquadrangular; burrows simple, sparsely branched, or densely branched in an overlapping, fan-like pattern; lower half part of burrow sheathed by outer zone of closely spaced pads of sediment; lower surface of burrow with closely spaced transverse ridges, commonly with median groove. | |
| M.E. Seitz and D.S. Brandt 2018 | Overlapping clusters of smooth-sided, subhorizontal tunnels, typically 1–2 cm wide, range<0.25 mm to 60 mm, simple or branched; median groove and trans-verse structures present; individual tunnels are consistent along their length, straight or curved, subquadrate in cross-section, tunnel filling is chevron-shaped. Tunnels may be bundled into narrow or palmate fans. |
Measurements
No measurements are available
No ecological data are available
Age range: base of the Rhuddanian to the top of the Gzhelian or 443.10000 to 298.90000 Ma
Collections (25 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Rhuddanian | USA (New York) | A. alleghaniensis (82523 82539 82551 82553) | |
| Llandovery | USA (Pennsylvania) | A. sp. (12765) | |
| Llandovery - Wenlock | Libya | A. sp. (26987) | |
| Llandovery - Ludlow | USA (New York) | A. sp. (12764) | |
| Llandovery - Pridoli | USA (Alabama) | A. alleghaniensis, A. brongniartii (210745) | |
| Silurian | USA (Pennsylvania) | A. sp. (12763) | |
| Aeronian | USA (New York) | A. alleganiensis (81904 82552) A. alleghaniensis (81810 81835 81866 81894 81897 82522 82538 82541 82550) | |
| Aeronian - Telychian | USA (New York) | A. alleghaniensis (82571) | |
| Wenlock | India | A. sp. (36257 36261) | |
| Carboniferous | USA (Michigan) | A. parallelus (210692) | |
| Gzhelian | USA (Utah) | A. sp. (39922) |