NEW MORPHOLOGICAL DATA FOR EOSANIWA KOEHNIHAUBOLD, 1977 AND A REVISED PHYLOGENETIC ANALYSIS

OLIVIER RIEPPEL; JACK L. CONRAD; JESSICA A. MAISANO

doi:10.1666/pleo0022-3360(2007)081[0760:NMDFEK]2.0.CO;2

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OLIVIER RIEPPEL,¹ JACK L. CONRAD,² JESSICA A. MAISANO³

¹Department of Geology, Field Museum of Natural History, 1400 South Lake Shore Drive, Chicago, Illino
²Department of Paleontology, American Museum of Natural History, 79th Street at Central Park West, Ne
³Jackson School of Geosciences, The University of Texas, Austin, Texas 78712, ⟨

Abstract

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.

Citation Download Citation

OLIVIER RIEPPEL, JACK L. CONRAD, and JESSICA A. MAISANO "NEW MORPHOLOGICAL DATA FOR EOSANIWA KOEHNI AND A REVISED PHYLOGENETIC ANALYSIS," Journal of Paleontology 81(4), 760-769, (1 July 2007). https://doi.org/10.1666/pleo0022-3360(2007)081[0760:NMDFEK]2.0.CO;2

Accepted: 3 April 2006; Published: 1 July 2007

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