Tremichnus excavatus (Donovan et Jagt, 2003)
| ID | 15752 |
|---|---|
| Fossil group | Bioerosional trace fossils |
| Taxon | Tremichnus excavatus |
| Author | (Donovan et Jagt, 2003) |
| Reference | Donovan & Jagt, 2003 |
| Parent taxon | Tremichnus |
| Is valid | Yes |
| FAD | Maastrichtian |
| LAD | Eocene |
Synonymy
| Year | Synonym | Author | Pages | Figs | Reference |
|---|---|---|---|---|---|
| 2019 | Tremichnus excavatus (Donovan & Jagt, 2002) | Wisshak, Knaust & Bertling | 16 | Wisshak et al., 2019a | |
| 2017 | Sedilichnus cf. excavatus (Donovan & Jagt, 2002) | Pokorný & Štofik | 12 | 7H-I | Pokorný & Štofik, 2017 |
| 2007 | Oichnus excavatus Donovan & Jagt, 2003 | Blissett & Pickerill | 88 | 3:3 | Blissett & Pickerill, 2007 |
| 2003 | Oichnus excavatus isp nov. | Donovan & Jagt | 69 | 2A, C; 3A, B; 4C; 5 | Donovan & Jagt, 2003 |
Type specimens
| Type | Number | Repository | Type locality | Loc. | Type horizon | Strat. | Remarks | Reference | ID |
|---|---|---|---|---|---|---|---|---|---|
| holotype | NHMM MK 4689 | Natural History Museum London | Vroenhoven-Riemst | Maastrichtian | Donovan & Jagt, 2003 |
Descriptions and remarks
Diagnosis: Circular to elliptical, nonpenetrative Oichnus, almost invariably with a broad, high, raised central boss. Aperture of boring overhanging and walls concave.
Diagnosis – (After Blissett & Pickerill, 2003c, p. 223.) “Circular to elliptical, nonpenetrative Oichnus, almost invariably with a broad, high, raised central boss. Aperture of boring may or may not be overhanging, but walls typically concave and may be V-shaped.”
Diagnosis Sedilichnus cf. excavatus (Donovan and Jagt, 2002): Circular to elliptical, nonpenetrative Sedilichnus, with a broad, high, raised central boss or pedestal. Aperture of boring may or may not be overhanging; walls are concave or V-shaped (Blissett and Pickerill,2007; and Zonneveld and Gingras, 2014).