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

100%

Arbour V. M., Lech-Hernes N. L., Guldberg T. E., Hurum J. H., Currie P. J.

Acta Palaeontologica Polonica

2013

tom 58

nr 1

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 ar− rangement 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.

Ograniczanie wyników

1 Acta Palaeontologica Polonica

1 Arbour V. M.

1 Currie P. J.

1 Guldberg T. E.

1 Hurum J. H.

1 Lech-Hernes N. L.

1 2013

Wyniki wyszukiwania

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