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A new species of plethodontid salamander is one of several large black species found in the Cordillera Talamanca-Baru of Panama and Costa Rica. Bolitoglossa anthracina sp. nov. differs from others in this group in having a very large number of maxillary...

A new species of Asian warty newt, Paramesotriton ermizhaoi, is described from Guangxi Zhuang Autonomous Region in southern China. This species is easily distinguished from other congeners by external morphology and osteology. Phylogenetic analyses based...

A new species of Bolitoglossa is described from the Cordillera Central of central Panama. This is a large black species, which is likely related to the B. (Eladinea) schizodactyla group of Costa Rica and Panama. The new species, known from a single...

We used RNA encoding green fluorescent protein (GFP) to study the migration and larval derivatives of cranial neural crest cells in the metamorphosing frog, Xenopus laevis. GFP provides an intrinsic cell-lineage marker that is retained after cell division...

Recent surveys of the plethodontid salamander fauna of Oaxaca, Mexico, disclosed the existence of a new, morphologically distinct arboreal species of the genus Pseudoeurycea. The new species, described here, is from the Sierra Mazateca in northern Oaxaca...

We describe a new terrestrial species of minute lungless salamander of the Mexican genus Thorius (Plethodontidae) from montane pine-oak forests in the Sierra de Juarez of north central Oaxaca, Mexico. The new species is distinguished from congeners by a...

Two new species of lungless salamanders (Plethodontidae) are described from montane habitats of eastern Costa Rica and adjacent western Panama. Bolitoglossa gomezi and B. bramei are distinguished from each other and from other salamander species in this...

We describe two new species of salamanders of the genus Pseudoeurycea from mountains in the northern part of the state of Oaxaca, Mexico. Pseudoeurycea papenfussi, a large, muscular member of the P gadovii group, occurs near the peaks (just below 3000 m)...