Daouitherium

Extinct genus of mammals

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Daouitherium Temporal range: Early Eocene

Lower jaws
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Proboscidea
Family:	†Numidotheriidae
Genus:	†Daouitherium Gheerbrant & Sudre, 2002
Species:	†D. rebouli
Binomial name
†Daouitherium rebouli Gheerbrant & Sudre, 2002

Daouitherium ("Sidi Daoui beast" from the name of the site where it was discovered) is an extinct genus of early proboscideans (a group including modern elephants and their extinct relatives) that lived during the early Eocene (Ypresian stage) some 55 million years ago in North Africa.

Remains of this animal, fragments of jaws and teeth, have been found in the Ouled Abdoun Basin in Morocco. It is estimated to have weighed between 80 and 170 kg (180 and 370 lb), making it one of the earliest large mammals known from Africa and one of the oldest known proboscideans.^[1] Another estimate gives a weight of 200 kg (440 lb).^[2]

Description

Daouitherium is known only from lower jaws and associated cheek teeth. It had lophodont and bilophodont molars, i.e. molars with large ridges. The second and third premolars had a notably large cusp called the hypoconid. Gheerbrant et al. described the teeth as similar to those of other early proboscideans Phosphatherium, Numidotherium, and Barytherium.^[1]

References

^ ^a ^b Gheerbrant, E.; Sudre, J.; Cappetta, H.; Iarochène, M.; Amaghzaz, M.; Bouya, B. (2002). "A new large mammal from the Ypresian of Morocco: Evidence of surprising diversity of early proboscideans" (PDF). Acta Palaeontologica Polonica. 47 (3): 493–506.
^ Larramendi, A. (2016). "Shoulder height, body mass and shape of proboscideans" (PDF). Acta Palaeontologica Polonica. 61. doi:10.4202/app.00136.2014.

Genera of the order Proboscidea

Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Superorder: Afrotheria
Clade: Tethytheria

Proboscidea

†Arcanotherium †Daouitherium †Eritherium †Khamsaconus? †Moeritherium †Numidotherium †Phosphatherium †Saloumia
†Barytheriidae	Barytherium Omanitherium
†Deinotheriidae	Chilgatherium Deinotherium Prodeinotherium

Elephantiformes

†Dagbatitherium †Eritreum †Hemimastodon †Palaeomastodon †Phiomia
†Mammutidae	Eozygodon Losodokodon Mammut Sinomammut Zygolophodon
†Choerolophodontidae	Afrochoerodon Choerolophodon
†Amebelodontidae	Afromastodon Amebelodon Aphanobelodon Archaeobelodon Eurybelodon Konobelodon Platybelodon Progomphotherium Protanancus Serbelodon Stenobelodon Torynobelodon
†"Trilophodont gomphotheres"	Blancotherium Cuvieronius Eubelodon Gnathabelodon Gomphotherium Notiomastodon Rhynchotherium Sinomastodon Stegomastodon
†"Tetralophodont gomphotheres"	Anancus Paratetralophodon Pediolophodon Tetralophodon
†Stegodontidae	Stegodon Stegolophodon
Elephantidae	Elephas Loxodonta †Mammuthus †Palaeoloxodon †Primelephas †Selenetherium †Stegodibelodon †Stegotetrabelodon