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Late Cretaceous dwarf decapods from Guerrero, southern Mexico and their migration patterns
Two new brachyuran species are described for the Upper Cretaceous Mexcala Formation, Guerrero State, Mexico. Longusorbis quadratus new species (Coniacian, Temalac region) is the oldest andExpand
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Oligocene Scorpion and insects (Plecoptera and Coleoptera) from the Los Ahuehuetes Locality, Puebla, Mexico
Abstract. A scorpion prosoma, a plecopteran nymph, Euperlida parvicercifera Cifuentes-Ruiz gen. et sp. nov., and the elytra of an adult beetle (Coleoptera) are described from the Oligocene CoatzingoExpand
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The oldest stratigraphic record of the Late Cretaceous shark Ptychodus mortoni Agassiz, from Vallecillo, Nuevo León, northeastern Mexico
In this paper we report the oldest geologic world record of Ptychodus mortoni, from the Vallecillo Member (Agua Nueva Formation), at Vallecillo, Nuevo Leon, northeastern Mexico. The presence of theExpand
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TheoldeststratigraphicrecordoftheLateCretaceoussharkPtychodus mortoniAgassiz,fromVallecillo,NuevoLeón,northeasternMexico
In this paper we report the oldest geologic world record of Ptychodus mortoni, from the Vallecillo Member (Agua Nueva Formation), at Vallecillo, Nuevo Leon, northeastern Mexico. The presence of theExpand