41st caudal vertebra of Spinosaurus aegyptiacus neotype, FSAC-KK 11888.
Ca41 represents the distalmost preserved caudal vertebra of Spinosaurus aegyptiacus neotype, with a neural spine that is 72% the length of the Ca31 spine. Already at the level of Ca36 the dorsoventral depth of the tail is slightly lower than at level of Ca31, because the neural spine of Ca36 forms 90% the length of the spine of Ca31. This indicates a trend in height reduction towards the distal end of the tail, which is confirmed by Ca41.
The specimen is preserved in the palaeontological collections of the Université Hassan II Ain chock Casablanca, Morocco.
References: Ibrahim N. et al. (2020). Tail-propelled aquatic locomotion in a theropod dinosaur. Nature, doi.org/10.1038/s41586-020-2190-3.
- morocco
- spinosaurus
- tail
- fossil
- paleontology
- dinosaurs
- nature
- vertebra
- chevron
- fossils
- pierce
- kem
- ribbon
- vertebrae
- 2020
- caudal
- ibrahim
- auditore
- casablanca
- unwin
- aegyptiacus
- dinosaur
- amane
- dalsasso
- maganuco
- neotype
- fsac-kk
- 11888
- erfoud
- semiaquatic
- kemkem
- bindellini
- martill
- zouhri
- mattarelli
- wiemann
- bonadonna
- joger
- lauder
- adaptations
- fabbri
- jakubzak
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