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The genus Oxyrhopus (Serpentes: Dipsadidae: Xenodontinae) in Guyana: morphology...

MacCulloch, Ross D.; Lathrop, Amy; Kok, Philippe J. R.; Ernst, Raffael; Kalamandeen, Michelle

Considerable confusion exists regarding taxonomy and distributions of Oxyrhopus in northern South America. Specimens and records of Oxyrhopus from Guyana were examined. Oxyrhopus melanogenys, O. occipitalis and O. petola occur in Guyana. Data on morphology and colouration of these species are presented. Species distributions and characters to distinguish among the species are discussed.; Existe uma considerável...

Date: 2009   |   Origin: Oasisbr
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Otophryne (Anura: Microhylidae) from the highlands of Guyana: redescriptions, v...

MacCulloch, Ross D.; Lathrop, Amy; Minter, Leslie R.; Khan, Samir Z.

Recent collections are used to expand existing descriptions of adults of Otophryne robusta and O. steyermarki.The calls of O. pyburni and O. robusta are compared. Tadpoles of O. robusta and O. steyermarki are described. Characters for distinguishing among adults and tadpoles of these two species and O. pyburni are provided. Otophryne is a Guiana shield endemic; O. pyburni is widespread at lower elevations, wher...

Date: 2008   |   Origin: Oasisbr
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