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Permanent link (DOI): https://doi.org/10.7939/R3416T02M

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An ankylosaurid dinosaur from Mongolia with in situ armour and keratinous scale impressions Open Access

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Author or creator
Arbour, V. M.
Lech-Hernes, N. L.
Guldberg, T. E.
Hurum, J. H.
Currie, P. J.
Additional contributors
Subject/Keyword
Mongolia
Dinosauria
Saichania
Ankylosauria
Ankylosauridae
Late Cretaceous
Tarchia
Type of item
Journal Article (Published)
Language
English
Place
Time
Description
A Mongolian ankylosaurid specimen identified as Tarchia gigantea is an articulated skeleton including dorsal ribs, the sacrum, a nearly complete caudal series, and in situ osteoderms. The tail is the longest complete tail of any known ankylosaurid. Remarkably, the specimen is also the first Mongolian ankylosaurid that preserves impressions of the keratinous scales overlying the bony osteoderms. This specimen provides new information on the shape, texture, and arrangement of osteoderms. Large flat, keeled osteoderms are found over the pelvis, and osteoderms along the tail include large keeled osteoderms, elongate osteoderms lacking distinct apices, and medium−sized, oval osteoderms. The specimen differs in some respects from other Tarchia gigantea specimens, including the morphology of the neural spines of the tail club handle and several of the largest osteoderms.
Date created
2013
DOI
doi:10.7939/R3416T02M
License information
Creative Commons Attribution 3.0 Unported
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Citation for previous publication
Arbour, V.M., Lech-Hernes, N.L., Guldberg, T.E., Hurum, J.H., and Currie, P.J. (2013). An ankylosaurid dinosaur from Mongolia with in situ armour and keratinous scale impressions. Acta Palaeontologica Polonica 58(1), 55-64.  http://dx.doi.org/10.4202/app.2011.0081
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