-
derived members of the
group are
large obligate quadrupeds.
Primitive marginocephalians are
found in Asia, but the
group migrated upwards into
North America...
- The
Judith River Formation is a fossil-bearing
geologic formation in Montana, and is part of the
Judith River Group. It
dates to the Late Cretaceous, between...
-
Marginocephalians reported from the
Lance Formation Genus Species Location Stratigraphic Position Material Notes Images Agathaumas A.
sylvestris "Partial...
- The
Horseshoe Canyon Formation is a
stratigraphic unit of the
Western Canada Sedimentary Basin in
southwestern Alberta. It
takes its name from Horseshoe...
- Thyreophora, a
group of
armoured dinosaurs distinct from
ornithopods and
marginocephalians.
Historically used for
forms lacking large vertical plates, Kenneth...
- and
possibly Europe Yinlong, an
early marginocephalian dinosaur from Asia Chaoyangsaurus, an
early marginocephalian dinosaur from Asia Juramaia, a basal...
-
diapsid predators. The
crests and
frills of some dinosaurs, like the
marginocephalians,
theropods and lambeosaurines, may have been too
fragile to be used...
-
Chaoyangsaurus ("Chaoyang lizard") is a
marginocephalian dinosaur from the Late Jur****ic of China. It has been
dated to
between 150.8 and 145.5 million...
- abundant, with
groups such as tyrannosauroids,
avialans (birds),
marginocephalians, and
ornithopods seeing early glimpses of
later success.
Other tetrapods...
- The
largest prehistoric animals include both
vertebrate and
invertebrate species. Many of them are
described below,
along with
their typical range of size...
