Decennatherium

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]

Decennatherium Temporal range: Late Miocene (Tortonian) 11.6–7.8 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Skull of the male D. rex holotype specimen
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Artiodactyla
Family:	Giraffidae
Genus:	†Decennatherium Crusafont, 1952
Species[1]
D. pachecoi Crusafont, 1952 D. crusafonti Bosscha-Erbrink, 1976 D. rex Ríos, Sánchez & Morales, 2017 D. asiaticum Ríos, Danowitz & Solounias, 2019

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]