| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Nezumia armentrouti
Taxonomy
Nezumia armentrouti was named by Stringer and Welton (2025). Its type specimen is UWBM VP 124,155, an otolith, and it is a 3D body fossil. Its type locality is Satsop River, middle fork, south side, which is in a Chattian basinal (siliceous) claystone in the Lincoln Creek Formation of Washington.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2025 | Nezumia armentrouti Stringer and Welton p. 492 figs. Figures 3, 4A–4 G, 5A–5E |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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.
†Nezumia armentrouti Stringer and Welton 2025
show all | hide all
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| G. L. Stringer and B. J. Welton 2025 | The sagitta of Nezumia armentrouti differs from all other nominal extant and fossil species of Nezumia by the combination of characters given below. The sagitta typically has a rounded anterior margin with a tapered posterior margin producing an almost triangular outline. Lobed margins are common, especially on the dorsal margin. A supramedian, homosulcoid-type sulcus tends to be slightly curved (as opposed to horizontal) and typically extends across approximately 85% of the inner face but may vary slightly with ontogeny. The sulcus is characterised by a very wide collum with a distinctive and obvious pseudocolliculum. Another unique character is the size of the caudal colliculum and the ostial colliculum, which are approximately the same. The caudal colliculum terminates far from the posterior tip of the otolith. |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|||||
|
|
||||
| Source: o = order, subp = subphylum | |||||
| References: Carroll 1988, Hendy et al. 2009 | |||||