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Koleken inakayali
Taxonomy
Koleken inakayali was named by Pol et al. (2024). Its type specimen is MPEF-PV 10826, a partial skeleton, and it is a 3D body fossil. Its type locality is Norte de Cerro Bayo 1 (3 meters), which is in a Maastrichtian estuary/bay siltstone/claystone in the La Colonia Formation of Argentina. It is the type species of Koleken.
Synonymy list
| Year | Name and author |
|---|---|
| 2024 | Koleken inakayali Pol et al. p. 6 figs. 2-16 |
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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.
†Koleken inakayali Pol et al. 2024
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. Pol et al. 2024 | Koleken inakayali is a brachyrostran abelisaurid different from other theropods in having the following set of autapomorphies (marked with a *): (i) medially smooth paradental plates; (ii) dorsal surface of the nasal with a row of foramina orientated
obliquely with respect to the longitudinal skull axis; (iii) *anterior ramus of the postorbital lacking the lateral wall reflected by a dorsoventral height less than half of its anteroposterior length, which makes the orbital surface face ventrally instead ventromedially; (iv) *dorsal surface of the postorbital with a shallow depression facing dorsolaterally, located at the junction between anterior and posterior rami, and bounded anteriorly by a well-defined ridge; (v) parietal with a mediolaterally concave dorsal surface and lacking a knob-like dorsal projection and; (vi) ventral process of the squamosal slender and thorn-like, lacking a kink on the anterior margin; (vii) *dorsal neural spines in lateral view bearing an elevated rim along the anterior, dorsal and posterior margins of the neural spine; (viii) margin of the proximal articular surface of tibia connecting lateral and medial condyles obliquely orientated, facing posterolaterally. |
Measurements
No measurements are available
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| Source: o = order | |||||
| References: Kiessling 2004, Marsh 1875 | |||||
Age range: Early/Lower Maastrichtian or 72.20000 to 66.00000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Maastrichtian | Argentina (Chubut) | Abelisauridae indet. (type locality: 224257) |