[MM] Amblotherium sorinicum
’Eupantotherians’
DESCRIBER Owen, 1871
TIME Jurassic Late
Kimmeridgian, Tithonian
CLASS Mammalia
CLADE Cladotheria
SUPERORDER Dryolestoidae
ORDER Dryolestida
FAMILY Dryolestidae
FOSSILSITE Morrison Formation, US
INFO
Amblotherium sorinicum (Owen, 1871 ) > Amblotherium gracile (Owen, 1871) >> Amblotherium debile (Simpson, 1929) >> Amblotherium nanum (Owen,1871) >Amblotherium pusillum (Owen, 1866) >> Amblotherium sp. indet. [= Kepolestes coloradensis (Simpson, 1927)] >> Amblotherium minimum (Simpson, 1929) [described as Miccylotyrans] >> Amblotherium sp.
Typespecies. Amblotherium is small with an estimated length of dentary of about 18 mm.
Premolars similr to those of Laolestes slender recurved, with no anterior accessory cusp. Metaconid of molars simple, pointed paraconid erect, nearly or quite as high as metaconid on posterior molars, separated from metaconid by a deep V-shaped notch; paraconid, metaconid and talonid cusp ina straight antero-posterior line. External cingulum (cingulid) on molars (faint in one of the English species. Simpson, 1929