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Oxalaia quilombensis
Taxonomy
Oxalaia quilombensis was named by Kellner et al. (2011). Its type specimen is MN 6117-V, a partial skull (Fused premaxillae), and it is a 3D body fossil. Its type locality is Laje do Coringa, Ilha do Cajual, which is in a Cenomanian estuary/bay sandstone/conglomerate in the Alcântara Formation of Brazil.
It was synonymized subjectively with Spinosaurus aegyptiacus by Smyth et al. (2020).
It was synonymized subjectively with Spinosaurus aegyptiacus by Smyth et al. (2020).
Synonymy list
| Year | Name and author |
|---|---|
| 2011 | Oxalaia quilombensis Kellner et al. p. 100 figs. 1-4 |
| 2012 | Oxalaia quilombensis Candeiro et al. p. 223 |
| 2012 | Oxalaia quilombensis Lindoso et al. p. 119 |
| 2013 | Oxalaia quilombensis Fernandes de Azevedo et al. p. 131 |
| 2013 | Oxalaia quilombensis Furtado et al. p. 106 |
| 2014 | Oxalaia quilombensis Medeiros et al. p. 53 |
| 2018 | Oxalaia quilombensis Aranciaga Rolando et al. p. 107 |
| 2019 | Oxalaia quilimboensis Arden et al. p. 279 |
| 2020 | Oxalaia quilombensis Malafaia et al. p. 432 |
| 2020 | Oxalaia quilombensis Pereira et al. p. 1 |
| 2021 | Oxalaia quilombensis de França et al. p. 1817 |
| 2023 | Oxalaia quilombensis Isasmendi et al. p. 919 |
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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.
†Oxalaia quilombensis Kellner et al. 2011
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. W. A. Kellner et al. 2011 | Spinosaurid with the following combination of characters that distinguish it from other members of this clade (autapomorphies are marked with an asterisk): teeth unserrated (differing from Cristatusaurus and Suchomimus); maximum expansion of the distal end of the premaxillae between the 3rd and 4th alveoli*; anterior projection of the maxillae between the premaxillae in the palatal region very thin*; presence of two replacement teeth associated with the 3rd functional tooth*; diastema between the 5th and 6th premaxillary teeth present but shorter than in Spinosaurus; ventral portion of the premaxillae very sculptured* |
Measurements
No measurements are available
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| Source: o = order | |||||
| Reference: Marsh 1875 | |||||
Age range: Cenomanian or 100.50000 to 93.90000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Cenomanian | Brazil (Maranhão) | Spinosaurus sp. (type locality: 56365) |