Showing blog posts tagged with Mammals
by AMNH on
Contradictory explanations for the evolution of nectar-drinking in a diverse group of bats have long puzzled scientists, but new research led by the American Museum of Natural History and Stony Brook University provides a clear answer.
The conflicting explanations come from two different types of data. Genetic data suggest that nectar feeding evolved twice in New World leaf-nosed bats whereas earlier analyses of the bats’ anatomy point to a single origin of nectar feeding. These bats are found in Central and South America and, uniquely among bats, eat nectar, fruit, frogs, lizards, and blood.
by AMNH on
Several years ago, Dr. Nikos Solounias, a visiting researcher specializing in the fossil record of animals from Samos discovered lizard bones mixed in with mammalian fossils that Museum paleontologist Barnum Brown had collected from Greece in 1924. Solounias showed the lizard bones to Jack Conrad, a research associate in the Museum’s Division of Paleontology, who recognized them as those of a varanid, a giant lizard typified by the Komodo dragon. In a new paper in PLOS ONE published last week, Conrad and colleagues Ana Balcarel and Carl Mehling have identified the 30-odd bone fragments, which fit in a box 8 inches long, as the remains of the oldest giant lizard ever to walk the Earth. If proportioned like its relatives, the new species—Varanus amnhophilis, or the Samos dragon—was 6 feet long.