Skeletal remains of a small theropod dinosaur with associated soft structures from the Lower Cretaceous Santana Formation of northeastern Brazil

Canadian Journal of Earth Sciences - Tập 37 Số 6 - Trang 891-900 - 2000
David M. Martill1, Eberhard Frey2, Hans‐Dieter Sues3, A. R. I. Cruickshank4
1School of Environmental, Earth and Physical Sciences, University of Portsmouth, Portsmouth PO1 3QL, U.K.
2Staatliches Museum für Naturkunde, Karlsruhe, Erbprinzenstrasse 13, D-76133 Karlsruhe, Germany
3Department of Palaeobiology, Royal Ontario Museum, 100 Queen’s Park, Toronto, ON M5S 2C6, Canada, and Department of Zoology, University of Toronto, Toronto, ON M5S 3G5, Canada.
4Department of Geology, University of Leicester, Leicester, LE1 7RH U.K.

Tóm tắt

Associated well-preserved, uncrushed skeletal remains, comprising the pelvic girdle, partial sacrum, both femora, and parts of the right tibia and fibula, from the Romualdo Member of the Lower Cretaceous Santana Formation of northeastern Brazil record the presence of a previously unknown coelurosaurian theropod dinosaur in that formation. The pelvic girdle is noteworthy for the bilaterally asymmetrical development of various bony features. The specimen also preserves a segment of lithified intestinal tract. While still in the matrix, the fossil preserved a vacuity behind the pubic apron that may indicate the existence of a postpubic air sac.

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Thông tin
Thông tin xuất bản

Canadian Journal of Earth Sciences

Tập 37 Số 6

891-900

Thông tin tác giả