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Triadotypus guillaumei nana
Discussion
Initially proposed as Triadotypus guillaumei forme nana, but as this name was given before 1961 and was not explicitly stated to be infrasubspecific, the name is valid as a subspecies (ICZN 45.6.4). Bechly's (1997) name Reisia nana is unjustified.
Taxonomy
Triadotypus guillaumei nana was named by Laurentiaux-Vieira et al. (1952). It is a compression fossil. Its type locality is Dent de Villard, Vanoise, which is in a Carnian terrestrial shale in the Keuper Formation of France.
It was recombined as Triadotypus nana by Nel et al. (2001); it was recombined as Reisia nana by Bechly (1997), Deregnaucourt et al. (2017), Béthoux and Anderson (2023).
It was recombined as Triadotypus nana by Nel et al. (2001); it was recombined as Reisia nana by Bechly (1997), Deregnaucourt et al. (2017), Béthoux and Anderson (2023).
Synonymy list
| Year | Name and author |
|---|---|
| 1952 | Triadotypus guillaumei nana Laurentiaux-Vieira et al. p. 320 |
| 1997 | Reisia nana Bechly |
| 2001 | Triadotypus nana Nel et al. |
| 2017 | Reisia nana Deregnaucourt et al. p. 614 |
| 2023 | Reisia nana Béthoux and Anderson p. 483 |
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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.
†Triadotypus guillaumei nana Laurentiaux-Vieira et al. 1952
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: c = class, p = phylum | |||||
| References: Bush and Bambach 2015, Kiessling 2004 | |||||
Collections
No collection or age range data are available