This suborder contains the more derived multituberculates, from
the lower Cretaceous to the Eocene.
Overall, these multituberculates are distinguished by their loss of one
of the incisors and two premolars. A third premolar becomes a peg-like
tooth with little function.
The suborder can be divided into six superfamilies:
- Paracimexomys group. This is an
informal group known mainly from isolated teeth.
Djadochtatherioidea. The multituberculates belonging to
this superfamily were relatively large. The frontal bones of the skull
(between the eyes) are quite large. The back of the skull is longer
than in other multituberculates.
- superfamily incertae sedis, families Cimolomyidae,
Taeniolabidoidea. The largest multituberculates
belonged to this superfamily. They had a short snout and very wide
cheekbones, making the skull quite square. They were different in
having had only one premolar, separated from the front teeth by a long
gap. The incisors were strong and self-sharpening like in rodents today.
- superfamily incertae sedis,
family Kogaionidae and genera Uzbekbaatar and Viridomys.
Ptilodontoidea. The lower incisors are slender; the fourth
premolar is very large. The enamel on the teeth were ornamented. They
had a wide snout.
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Anatomy | Palaeobiology
| Major Subgroups | Fossil Record
Forms | Literature
Author: Aude Caromel
Last updated: 20/11/06
to Fossil groups home page
produced by students
on the MSc
Palaeobiology programme in the Department
of Earth Sciences at the University of Bristol for academic