New Species of Armored Dinosaur Identified in Japan
Paleontologists have identified a new genus and species of nodosaurid ankylosaur, named Nipponopelta yezoensis, from fossils found in Hokkaido, Japan. This discovery marks the first formal description of an ankylosaur in Japan and provides new insights into the geographic distribution of nodosaurids during the Late Cretaceous.
Why it matters
This finding helps fill gaps in the evolutionary history of armored dinosaurs and clarifies the presence of nodosaurids in Asian coastal environments.
Cranial fossils of a nodosaurid ankylosaur unearthed more than two decades ago on the Japanese island of Hokkaido have been recognized as belonging to a new genus and species.
Nipponopelta yezoensis . Image credit: TotalDino / CC BY 4.0.
The newly identified dinosaur species roamed Earth during the Late Cretaceous epoch, between 96 and 94 million years ago.
Named Nipponopelta yezoensis , it is the first ankylosaur ever formally described from Japan, and only the second Asian member of its subfamily, the nodosaurids , known from skull material rather than bones from the body alone.
“The traditionally known ankylosaurs (now Euankylosauria) are divided in two major clades, nodosaurids and ankylosaurids, among the most widely discovered dinosaurs from Cretaceous deposits,” said Hokkaido University paleontologist Shumpei Oyabu and his colleagues.
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