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Mathilda (Echinimathilda)
Taxonomy
Mathilda (Echinimathilda) was named by Sohl (1960) [Was attributed to Semper 1865, but that is Mathilda.
Sepkoski's age data: K Maes].
It was reranked as Echinimathilda by Sepkoski (2002), Squires and Saul (2003), Groves and Nielsen (2003) and Gründel and Nützel (2013).
It was assigned to Mathilda by Sohl (1960); to Neotaenioglossa by Sepkoski (2002); and to Mathildidae by Squires and Saul (2003), Groves and Nielsen (2003) and Gründel and Nützel (2013).
It was reranked as Echinimathilda by Sepkoski (2002), Squires and Saul (2003), Groves and Nielsen (2003) and Gründel and Nützel (2013).
It was assigned to Mathilda by Sohl (1960); to Neotaenioglossa by Sepkoski (2002); and to Mathildidae by Squires and Saul (2003), Groves and Nielsen (2003) and Gründel and Nützel (2013).
Subtaxa
Species lacking formal opinion data
Echinimathilda moonkinua, Mathilda bourdoti, Mathilda claibornensis, Mathilda claibornensis, Mathilda crebricosta, Mathilda cribraea, Mathilda cribraea, Mathilda crossei, Mathilda iugum, Mathilda iugum, Mathilda kaiparaensis, Mathilda kauffmani, Mathilda malvinarum, Mathilda marylandensis, Mathilda retisculpta, Mathilda retisculpta, Mathilda retisculpta
Synonymy list
| Year | Name and author |
|---|---|
| 1960 | Mathilda (Echinimathilda) Sohl |
| 2002 | Echinimathilda Sepkoski |
| 2003 | Echinimathilda Groves and Nielsen p. 158 |
| 2003 | Echinimathilda Squires and Saul p. 158 |
| 2013 | Echinimathilda Gründel and Nützel p. 820 |
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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.
Subg. †Mathilda (Echinimathilda) Sohl 1960
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†Mathilda (Echinimathilda) corona Sohl 1960
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| L. T. Groves and S. N. Nielsen 2003 | Shell small to medium, turritelliform. Protoconch partly submerged and anastrophic. Teleoconch whorls shouldered and basally angulate, sides rounded. Sculpture of strong spiral cords and finer collabral riblets. Aperture semicircular to subovate. Columellar lip reflected. | |
| R. L. Squires and L. R. Saul 2003 | (modified after Sohl, 1960 and Dockery, 1993): Shell small to medium, turritelliform. Protoconch partly submerged and anastrophic. Teleoconch whorls shouldered and basally angulate, sides rounded. Sculpture of strong spiral cords and finer collabral riblets. Aperture semicircular to subovate. Columellar lip reflected. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Kiessling 2004, Hendy et al. 2009 | |||||
Age range: base of the Late/Upper Maastrichtian to the top of the Lutetian or 70.60000 to 41.30000 Ma
Collections (11 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Maastrichtian | USA (Tennessee) | Mathilda unionensis (205445) | |
| Early/Lower Maastrichtian | USA (Georgia) | Mathilda corona (4282) | |
| Late/Upper Maastrichtian | USA (Texas) | Mathilda corona (4488 4492) | |
| Late/Upper Maastrichtian | USA (Maryland) | Mathilda corona (4369) | |
| Late/Upper Maastrichtian | USA (Mississippi) | Mathilda corona (4127) | |
| Danian | USA (Texas) | Mathilda duogenta (205466) | |
| Ypresian | USA (Texas) | Mathilda cribraea (178054) | |
| Lutetian | USA (Texas) | Mathilda cribraea (205520 205521 205533) |