The Comparison of Cranial Osteology of Neurergus microspilotus and Salamandra infraimmaculata semenovi (Amphibia: Salamandridae)

Fahimeh Akia, Nasrullah Rastegar-Pouyani, Hiwa Faizi

Abstract


Cranial osteology characters of Neurergus microspilotus collected from Kavat River, Paveh, KermanshahProvince and Salamandra infraimmaculata semenovi from Sarvabad, Kurdistan Province, western Iran, have been described and compared based on 10 dry skull preparations. Individual characters within each of these two species discussed and compared together. Prominent differences between skulls of the two species observed are as follows: individual bones thickness, maxillary dentition, shape of the frontal, parietal and premaxillary bones, morphology of the palatines and associated structures. In S. i. semenovi the most parts of skull are not being completely ossified and have a membranous structure and even in the ossified parts the elements have nosolidity this may due in part to more evolutionary primitive status of compare to Neurergus. The frontal bone in N. microspilotus is ossified with a projection towards the orbit which creates a ring by cartilaginous part asfrontosquamosal ring. However, the frontosquamosal bone structure is absent in S. i. semenovi. Almost all skullelements of N. microspilotus are mineralized but this is not the case with S. i. semenovi.


Keywords


Neurergus microspilotus; Salamandra infraimmaculata semenovi; skull; comparative osteology

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DOI: http://dx.doi.org/10.30906/1026-2296-2019-17-%25s-179-184

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