Coming soon!

This specimen was collected from the Federal Fish Hatchery in San Marcos, Texas on 19 August 1994. It was made available to The University of Texas High-Resolution X-ray CT Facility for scanning by Dr. Julian Humphries and Dr. Timothy Rowe of The University of Texas at Austin courtesy of the Texas Memorial Museum Natural History Collections. Funding was provided by a National Science Foundation Digital Libraries Initiative grant to Dr. Rowe.

This specimen was scanned by Matthew Colbert on 14 March 2003 along the coronal axis for a total of 975 slices. Each slice is 0.123 mm thick, with an interslice spacing of 0.123 mm and a field of reconstruction of 34.0 mm.

Bemis, W.E. and L. Grande. 1992. Early development of the actinopterygian head. I. General observations and comments on staging of the paddlefish, Polyodon spathula. J. Morphol., 213: 47-83.

Bemis, W.E. and L. Grande. 1999. Development of the median fins of the North American paddlefish (Polyodon spathula) with comments on the lateral fin-fold hypothesis. IN: Mesozoic Fishes II. Systematics and the Fossil Record (G. Arratia and H.-P. Schultze, eds.) Munich: Pfeil. pp. 41-68.

Grande, L. and W.E. Bemis. 1991. Osteology and Phylogenetic Relationships of Fossil and Recent Paddlefishes (Polyodontidae) with Comment on the Interrelationships of Acipenseriformes. J. Vertebrate Paleontology, Special Memoir Number 1 (supplement to Volume 11). Pages 1-121.

Grande, L. and W.E. Bemis. 1996. Interrelationships of Acipenseriformes with comments on "Chondrostei". pages 85-115. In: M.L.J. Stiassny, L.R. Parenti & G.D. Johnson (eds.) Interrelationships of Fishes. Academic Press, New York.

Bemis, W.E., E. K. Findeis and L. Grande. 1997. An overview of Acipenseriformes. Environmental Biology of Fishes, 48: 25-71.

Polyodon spathula page on FishBase.org

Paddlefish study project of the U.S. Geological Survey

P. spathula page from Texas Parks and Wildlife

None available.