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Jurassic pachycephalosaurs

Martin,T. & Averianov,A., 2004. Middle Jurassic Vertebrates from Kyrgyzstan (Central Asia). in Abstracts of the 64th Annual Meeting of the Society of Vertebrate Paleontology. Journal of Vertebrate Paleontology 24 (3).

"Large areas of the Central Asian terrestrial Mesozoic are still poorly known. One important source of
new information is the Middle Jurassic (Callovian) Sarykamyshsai locality within the Balabansai svita
near Tashkumyr in the northern Fergana valley (Kyrgyzstan) ...The pterosaurs are represented by isolated teeth of Rhamphorhynchinae indet.and the dinosaurs by teeth of a large theropod (Tetanurae indet.)and a sauropod (Neosauropoda indet., possibly *Ferganasaurus*. A metatarsal I and a first phalanx of the fifth digit can also be attributed to the sauropod. A new pachycephalosaur has been described on the base of teeth that expand the fossil record of this group by 10-20 m.y."

A new pachycephalosaur _has been described_? Where? If anyone has the citation, please share.

And how does a Callovian pachycephalosaur only extend the record of pachycephalosaurs by 10-20 million years? Has anything else been published on pachycephalosaurs from the end of the Jurassic?

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