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| Mollen, F.H.; Bakel , B.W.M. van; Jagt, J.W.M.. |
| A detailed redescription of a chondrocranium from the basal Boom Clay Formation (Rupelian, Upper Oligocene) at the SVK clay pit, Sint-Niklaas (province of Oost-Vlaanderen, Belgium), previously assigned to the sawshark Pristiophorus rupeliensis, is presented. The chondrocranium is re-identified as that of an angel shark (Squatinidae), based on comparative anatomy of extant Squatina, inclusive of CT scans of Squatina africana, S. australis, S. dumeril, S. guggenheim and S. squatina, with different geographic distributions and representing all four angel shark clades as defined in a previous molecular study. Differential characters for chondrocrania listed in earlier accounts to discriminate angel shark species from the southwest Atlantic proved to be even... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Chondrocranium; CT scanning; Neurocranium; Pristiophorus; Squatina; Vertebrae. |
| Ano: 2016 |
URL: http://www.repository.naturalis.nl/record/607684 |
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| Dias,Pedro H. dos Santos; Carvalho-e-Silva,Ana M.P.T. de; Carvalho-e-Silva,Sergio P. de. |
| We describe the external morphology of the tadpole of Proceratophrys izecksohni Dias, Amaro, Carvalho-e-Silva & Rodrigues, 2013, its internal oral features, and chondrocranial anatomy, based on specimens collected at the type locality. The tadpole has short and oval body, spiracle with inner wall fused to the body, and oral formula 2/3(1). The oral cavity of P. izecksohni is typical of stream-dwelling tadpoles, with several papillae and pustulations. The chondrocranium is longer than wide and the suprarostral corpora are free ventromedially. The palatoquadrate has a well developed processus pseudopterygoideus. We also compare the tadpole of P. izecksohni with tadpoles those of other species of the genus, emphasizing the usage of larval morphology... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chondrocranium; Description; Internal oral morphology; Proceratophrys appendiculata complex; Systematics. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702014000200010 |
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