| Decennatherium Temporal range: Late Miocene (Tortonian)
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| Skull of the male D. rex holotype specimen | |
Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Infraclass: | Placentalia |
| Order: | Artiodactyla |
| Family: | Giraffidae |
| Genus: | †Decennatherium Crusafont, 1952 |
| Species1 | |
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Decennatherium is an extinct genus of giraffids. The genus contains a total of four species with two species from Spain, D. pachecoi and D. rex, and two species respectively from Iran and Pakistan, D. crusafonti and D. asiaticum.1 In 2025, Solounias and Danowitz assigned the YGSP 47357, 6392, and 47192, previously referred to Lyrakeryx, to Decennatherium.2
Description
A juvenile D. rex specimen from Spain suggests that the ontogenetic development of ossicones in the species was similar to that of the modern giraffe.3
References
References
- Rios, Maria; Danowitz, Melinda; Solounias, Nikos (2019). "First identification of Decennatherium Crusafont, 1952 (Mammalia, Ruminantia, Pecora) in the Siwaliks of Pakistan". Geobios. 57: 97–110. Bibcode:2019Geobi..57...97R. doi:10.1016/j.geobios.2019.10.007. S2CID 212818436. Retrieved 12 August 2025.
- Solounias, N.; Danowitz, M. (2025). "Siwalik Giraffoidea". In Badgley, C.; Morgan, M.E.; Pilbeam, D. (eds.). At the Foot of the Himalayas: Paleontology and Ecosystem Dynamics of the Siwalik Record. Johns Hopkins University Press. p. 361. ISBN 978-1421450278.
- Ríos, M.; Cantero, E.; Martino, R.; Estraviz-López, D.; Crespo, V. D.; Lohmann, P.; Morales, J. (4 August 2024). "Description of newly discovered cranial remains of Decennatherium rex juveniles from Batallones-10 (Late Miocene, Iberian Peninsula)". Historical Biology: 1–8. doi:10.1080/08912963.2024.2376359. ISSN 0891-2963. Retrieved 16 June 2025 – via Taylor and Francis Online.