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Issue: Vol. 4227 No. 2: 2 Feb. 2017
Type: Article
Published: 2017-02-02
DOI: 10.11646/zootaxa.4227.2.4
Page range: 219–232
Abstract views: 50
PDF downloaded: 2

Osteology of Physalaemus nattereri (Anura: Leptodactylidae) with comments on intraspecific variation

Unidad Ejecutora Lillo-CONICET, Miguel Lillo, 251-4000, San Miguel de Tucumán, Argentina. Setor de Herpetologia, Departamento de Vertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro. Quinta da Boa Vista 20940-040. Rio de Janeiro, RJ, Brasil.
Setor de Herpetologia, Departamento de Vertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro. Quinta da Boa Vista 20940-040. Rio de Janeiro, RJ, Brasil
Instituto de Biociências, Departamento de Zoologia, Jacarezário. Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP . 13506-900 - Rio Claro, SP, Brasil.
Amphibia morphology anatomy skeleton nasal capsule

Abstract

The cranium, postcranium, and osteological variation of Physalaemus nattereri (Steindachner) are described. The main sources of variation involve the degree of mineralization of the nasal capsule and the lengths of dermal skull bones (e.g., vomer, sphenethmoid, and neopalatine). Osteologically, P. nattereri differs from its congeners by the anterior placement of the jaw articulation (which lies anterior to the intersection between the alae and cultriform process of parasphenoid), and by the separation of the frontoparietals from the anterior margins of exoccipitals. Descriptions of the nasal capsule, the auditory apparatus, and the iliosacral articulation are presented for the first time for this species. One putative morphological synapomorphy is presented for the P. signifer Clade.

 

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