Jacopo Moretti¹, Emanuel Tschopp², Daniel Barta², Katja Waskow³ & Mark Norell²
¹ Dipartimento di Scienze Chimiche e Geologiche, Università di Modena e Reggio Emilia, Via Giuseppe Campi 103, 41125 Modena, Italy; email@example.com.
² American Museum of Natural History, Central Park West & 79° street, 10024 New York, NY, USA.
³ Steinmann Institute for Geology, Mineralogy, and Paleontology, University of Bonn, Nussallee 8, 53113 Bonn, Germany.
- Morphological and Histological study on sauropod bones from the Howe Quarry with the determination of an age range and ontogenetic stage for every specimen.
- Eight specimens studied, one fibula and seven ribs: three skeletally mature, three sexually mature, one juvenile and one undetermined.
- Useful and generally applicable method without a taxonomical assignment.
Keywords: Howe Quarry; sauropods; bone histology; age range; ontogenetic stage.
Fig. 1. Resume of images and data of AMNH FARB 30901. A, 3D scan of the dorsal rib (the red line indicates sectioning of following frames). B, thin section (and detail on the right) illustrating LAGs (in red), the EFS is only visible under optical microscope, white holes represent osteons. C, data gathered from this specimen.
Fig. 2. General graphic representing the distances of LAGs from the center of the rib in all the studied specimens.
Fig. 3. General graphic representing the distances between LAGs in all the studied specimens.
- Ayer J. (2000). The Howe Ranch Dinosaurs. Sauriermuseum Aathal, Aathal, Switzerland.
- Bird R. T. (1985). Bones for Barnum Brown, adventures of a dinosaur hunter. Texan Christian University Press, Fort Worth, U.S.A.
- Brown B. (1935). Sinclair Dinosaur Expedition, 1934. Eds. Natural History, 1934, New York City (NY), 3-16.
- Foster J. (2007). Jurassic West: The Dinosaurs of the Morrison Formation and Their World, Indiana University Press, Bloomington, U.S.A.
- Tschopp E. & Mateus O. (2013). The skull and neck of a new flagellicaudatan sauropod from the Morrison Formation and its implication for the evolution and ontogeny of diplodocid dinosaurs. Journal of Systematic Palaeontology, 11: 853–888.
- Waskow K. & Sander P.M. (2014). Growth record and histological variation in the dorsal ribs of Camarasaurus sp. (Sauropoda). Journal of Vertebrate Paleontology, 34: 852-869.