Tremichnus Brett, 1985
| ID | 13226 |
|---|---|
| Fossil group | Bioerosional trace fossils |
| CAD | Circular holes and pit-shaped borings |
| Type | Macroboring |
| Substrate | Calcareous substrate |
| Taxon | Tremichnus |
| Author | Brett, 1985 |
| Reference | Brett, 1985 |
| Parent taxon | Centrichnidae |
| Is valid | Yes |
| FAD | Dapingian |
| LAD | Callovian |
Includes:
| Species | Reference | Valid? |
|---|---|---|
| Tremichnus cysticus | Brett, 1985 | No |
| Tremichnus excavatus | Donovan & Jagt, 2003 | Yes |
| Tremichnus minutus | Brett, 1985 | No |
| Tremichnus paraboloides | Brett, 1985 | Yes |
| Tremichnus puteolus | Brett, 1985 | Yes |
Synonymy
| Year | Synonym | Author | Pages | Figs | Reference |
|---|---|---|---|---|---|
| 2017 | Oichnus Bromley, 1981 | Donovan & Pickerill | 828 | Donovan & Pickerill, 2017 | |
| 2015 | Tremichnus | Thomka & Brett | 660-661 | 10e | Thomka & Brett, 2015 |
| 2015 | Tremichnus | Vinn, et al. | 241 | 2, 3 | Vinn et al., 2015c |
| 2015 | Tremichnus | Vinn & Wilson | 60 | Vinn & Wilson, 2015a | |
| 2015 | Tremichnus Brett, 1985 | Wisshak et al. | 449 | Wisshak et al., 2015 | |
| 2003 | Tremichnus | Taylor & Wilson | 11 | Taylor & Wilson, 2003 | |
| 1998 | Tremichnus | Feldman & Brett | 66 | 10 | Feldman & Brett, 1998 |
| 1989 | Balticapunctum n. gen. et sp. | Rozhnov | 52 | Rozhnov, 1989 | |
| 1985 | Tremichnus n. gen. | Brett | 62 | Brett, 1985 |
Descriptions and remarks
Circular pits or embedment structures of varying diameter (about 0.1 to 4.0 mm) occurring on the plates of echinoderms, primarily crinoids, with or with out associated thickening or gall-like deformation of the plates. Pits regularly parabolic in cross section, with diameter/depth ratios variable from about 0.1–1.0; no internal expansion or other ramifications. Holes always oriented perpendicularly to external plate surfaces, tapering in ward; generally not penetrating through plates. Adjacent pits
may over lap one an other.
Emended diagnosis. Circular pits, generally wider than deep, perpendicularly bored into ossicles of echinoderms.
Unbranched, circular, bioerosional trace.
Category of architectural design: 2.63. Circular holes and pit-shaped borings.
Occurrences
Specimens with images (6)
