The compressed basidiocarp of a fungus belonging to Geasteraceae (Lycoperdales, Gasteromycetes) was recovered from the plant-bearing Cenozoic strata of the Pie de Vaca Formation, Puebla, Mexico. The fossil specimen consists of an open exoperidium with ten triangular rays, and a…

dentification of groups that are similar in their floristic composition and structure (habitat types) is essential for conservation and forest managers to allocate high priority areas and to designate areas for reserves, refuges, and other protected areas. In this study,…

It was hypothesized that children with physical disabilities would show a deficit in procedural and declarative knowledge of ball catching compared to age-matched non-disabled children. The first group of children consisted of sixteen children with physical disabilities, three girls and…

Biogeography is a discipline included in comparative biology that studies the distribution of organisms, the distributional patterns of organisms are analyzed through the application of different methods, depending on the question formulated. In this work the principles and advantages of…

Diabetes mellitus is a syndrome which affects more and more people in all countries over the world. In Mexico, it is commonly treated with herbal extracts. Such treatment may be of considerable benefit especially during the early stages of the…

The high rate of sexually transmitted diseases and teen pregnancies among the Cree adolescents indicate that this population frequently engages in unprotected sexual activities. AIDS is a critical health problem worldwide and AIDS contamination within a Cree community could be…

Traditional mycological knowledge of most Mexican ethnic groups has proven to be extensive and profound, consuming nearly 300 species of wild mushrooms. In this paper, we identified the mushrooms used by Zapotecs of Ixtlan, Oaxaca, compiled their traditional knowledge and…

Early in the twentieth century it was shown that Mendel's laws apply to plants and animals and that genes reside on chromosomes. In the 1950s the double-helix model of DNA inaugurated the molecular biology era, which culminated at the end…

A survey of lignicolous freshwater ascomycetes was carried out in Las Ilusiones Lagoon located in the metropolitan area of Villahermosa City State of Tabasco, Mexico. Aniptodera inflatiascigera, Ascosacculus aquaticus and A. heteroguttulatus are recorded for the first time from Mexico.…

A new terrestrial species of Pseudoeurycea is described from the mountains of the Mixteca region of Oaxaca. Compared with other members of the genus, the new species is relatively slender and short-legged. The background color of the dorsum of this…