Temporal range: Early Cretaceous - Late Cretaceous, 145–70 Ma
PreꞒ
Ꞓ
O
S
D
C
P
T
J
K
Pg
N
Restoration of Yaverlestes
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Class:
Mammalia
Order:
†Symmetrodonta
Superfamily:
†Spalacotherioidea
Family:
†Spalacotheriidae Marsh, 1887
Genera
See text
Spalacotheriidae is a family of extinct mammals belonging to the paraphyletic group 'Symmetrodonta'. They lasted from the Early Cretaceous to the Campanian in North America, Europe, Asia and North Africa.
Spalacotheriids are characterised by having molar teeth with three molar cusps sitting at acute angles to one another.[1] The shape of their teeth as well as their long lower jaw indicate a carnivorous/insectivorous diet.[2]
A sub-group of Spalacotheriidae, the spalacolestines, lack a Meckelian groove in the jaw, indicating that they had a modern ear anatomy.[1]
^ abMartin, T., 2018. 6. Mesozoic mammals—early mammalian diversity and ecomorphological adaptations. In Mammalian evolution, diversity and systematics (pp. 199-300). De Gruyter.
^Han, Gang; Meng, Jin (2016). "A new spalacolestine mammal from the Early Cretaceous Jehol Biota and implications for the morphology, phylogeny, and palaeobiology of Laurasian 'symmetrodontans'". Zoological Journal of the Linnean Society. 178 (2): 343–380. doi:10.1111/zoj.12416.
Spalacotheriidae is a family of extinct mammals belonging to the paraphyletic group 'Symmetrodonta'. They lasted from the Early Cretaceous to the Campanian...
it. Particular sub−groups of Symmetrodonta are better studied, e.g. Spalacotheriidae, which has acute−angled molariform teeth, strongly reduced talonids...
Database: Tinodontidae, basic info "MESOZOIC MAMMALS; Tinodontidae and Spalacotheriidae, an internet directory". O. C. Marsh. 1887. American Jurassic mammals...
†Amphidontidae Order †Spalacotherioidea Family †Tinodontidae Family †Spalacotheriidae Family †Barbereniidae Legion Cladotheria Sublegion †Dryolestoidea Order...
is the sister taxon of Spalacotheriidae, in China suggests a possibility the East Asian origins of the group Spalacotheriidae. The type specimen of Symmetrolestes...
Akidolestes is an extinct genus of mammals of the family Spalacotheriidae, a group of mammals related to therians (the subclass containing marsupials and...
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