Scientists
have identified a new type of horned dinosaur with a uniquely decorated neck
frill. According to an article
in the journal PLOS One, Spiclypeus shipporum lived approximately 76
million years ago in what's the present-day state of Montana in the United
States. The fossils were discovered 10 years ago in the Judith River Formation,
a geologic formation in Montana rich in rewards for paleontologists, but only
now fully examined and described.
The
scientists — who call the fossil "Judith" after the place it was found — say
that as far as we know, Spiclypeus is a dinosaur unique to Montana, and that while some other species
found in the region also show up in Alberta, none has ever been found in more
southern regions. This implies that North American dinosaur species that lived
during the Campanian Age of the Late Cretaceous Period may have been highly
localized, the study says.
Two things
set Judith and others like it apart from other horned dinosaurs, like the
well-known triceratops. First, it has a unique projection of bony spikes
around the rim of its shield, some oriented forwards and some outwards. Second,
the horncones above the dinosaur's eyes stuck out sideways from its skull,
rather than the more common forward- or upward-oriented horns.
Judith's
scientific name Spiclypeus shipporum combines two Latin words for a genus
name meaning spiked shield, while the species name comes from the Shipp family,
on whose property the fossil was found.
by
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