Koshisaurus
Name:
Koshisaurus
(Koshi lizard).
Phonetic: Ko-she-sore-us.
Named By: Masateru Shibata & Yoichi Azuma
- 2015.
Classification: Chordata, Reptilia, Dinosauria,
Ornithischia, Ornithopoda, Hadrosauroidea.
Species: K. katsuyama
(type).
Diet: Herbivore.
Size: Uncertain due to lack of fossils with known
elements probably representing juvenile individuals.
Known locations: Japan, Fukui - Kitadani
Formation.
Time period: Aptian of the Cretaceous.
Fossil representation: Holotype is a partial maxilla
and teeth, with additional post cranial remains
Koshisaurus
is a genus of primitive hadrosauroid dinosaur from the early Cretaceous
of Japan. At the time of writing all known remains of Koshisaurus
are
partial as well as probably representing juvenile or sub adult
individuals, both of which are factors that make it difficult to
ascertain how big this dinosaur could grow. Though not yet
exceptionally well known, Koshisaurus has been
considered as distinct
from Fukuisaurus,
another hadrosauroid from the same Formation that
Koshisaurus is known from. Possible predators of Koshisaurus
could
include theropod dinosaurs such as Fukuiraptor.
Koshisaurus
means ‘koshi lizard’. Koshi is the old name for Fukui
Prefecture, which is where the Koshisaurus
holotype fossils were
discovered. The species name katsuyama means
‘from Katsuyama’.
Further reading
- New basaltic hadrosauroid (Dinosauria: ornithopoda) from the
Lower Cretaceous Kitadani Formation, Fukui, central Japan. -
Zootaxa 3914 (4): 421-440. - Masateru Shibata &
Yoichi Azuma - 2015.
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