منابع مشابه
An Extraordinary Gobioid Fish Fossil from Southern France
BACKGROUND The classification of gobioid fishes is still under discussion. Several lineages, including the Eleotridae and Butidae, remain difficult to characterize because synapomorphies are rare (Eleotridae) or have not yet been determined (Butidae). Moreover, the fossil record of these groups is scarce. RESULTS Exceptionally well-preserved fish fossils with otoliths in situ from uppermost O...
متن کاملFossil Sand Dollars (echinoidea: Clypeasteroida) from the Southern Brazilian Coast
Quaternary sediments along the southernmost portion of the Brazilian coast are rich in fossil remains of various terrestrial and marine organisms. This paper presents a description of fossil irregular clypeasteroid echinoids found in this area, with observations on their taphonomy. The identified taxa are Encope emarginata (Leske) and Mellita quinquiesperforata (Leske), although the latter is v...
متن کاملTwo new species of fossil Leggadina (Rodentia: Muridae) from Northwestern Queensland
Only three species of fossil murine have been described to date in Australia even though they are often found in fossil deposits and can be highly useful in understanding environmental change over time. Until now the genus Leggadina, a group of short-tailed mice that is particularly well adapted to an arid environment, was only known from two extant species: L. forresti and L. lakedownensis. He...
متن کاملAnthelmintic resistance in ovine gastrointestinal nematodes in inland southern Queensland.
OBJECTIVE To establish the prevalence of anthelmintic resistance in ovine gastrointestinal nematodes in southern Queensland. DESIGN An observational parasitological study using the faecal egg count reduction test. METHODS Sheep farms (n = 20) enrolled in this study met the twin criteria of using worm testing for drench decisions and having concerns about anthelmintic efficacy. On each farm,...
متن کاملFossil tragulids of the Siwalik Formations of southern Asia
Tragulids are common in the Early Miocene through Pliocene Siwalik faunas of the Indian Subcontinent where they are represented by as many as 17 species. Large collections of Siwalik fossils have recently been made by collaborative projects from Harvard University, the University of Arizona, the Geological Survey of Pakistan, and the Pakistan Museum of Natural History. The collections together ...
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ژورنال
عنوان ژورنال: Nature
سال: 1929
ISSN: 0028-0836,1476-4687
DOI: 10.1038/124512a0