Journal of Paleontology; July 2007; v. 81; no. 4;
p. 760-769; DOI: 10.1666/pleo0022-3360(2007)081[0760:NMDFEK]2.0.CO;2
© 2007 Paleontological Society
NEW MORPHOLOGICAL DATA FOR EOSANIWA KOEHNI HAUBOLD, 1977 AND A REVISED PHYLOGENETIC ANALYSIS
OLIVIER RIEPPEL1,
JACK L. CONRAD2 and
JESSICA A. MAISANO3
1 Department of Geology, Field Museum of Natural History, 1400 South Lake Shore Drive, Chicago, Illinois 60605,
rieppel{at}fieldmuseum.org
,
2 Department of Paleontology, American Museum of Natural History, 79th Street at Central Park West, New York, New York 10024,
jlconrad{at}amnh.org
,
3 Jackson School of Geosciences, The University of Texas, Austin, Texas 78712,
maisano{at}mail.utexas.edu
Eosaniwa koehni is an enigmatic platynotan that differs from related varanoids in the possession of a very long snout resulting in extremely elongate nasals and vomers; a robust and broad jugal; the presence of denticles on palatines, pterygoids, and vomers; the presence of a subdental shelf on the dentary; and a strongly twisted retroarticular process on the mandible. Phylogenetic analysis suggests that Eosaniwa is a derived varanoid platynotan, nested within a clade also including mosasauroids, Coniasaurus, and Paravaranus.
Copyright © 2009 by Paleontological Society