منابع مشابه
Fossil spiders.
Over the last three decades, the fossil record of spiders has increased from being previously biased towards Tertiary ambers and a few dubious earlier records, to one which reveals a much greater diversity in the Mesozoic, with many of the modern families present in that era, and with clearer evidence of the evolutionary history of the group. We here record the history of palaeoarachnology and ...
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Spiders are one of the eleven orders of the class Arachnida, which also includes groups such as harvestmen (Opiliones), ticks and mites (Acari), scorpions (Scorpiones), false scorpions (Pseudoscorpiones), windscorpions (Solifugae), and vinegaroons (Uropygi). All arachnid orders occur in North America. Arachnida today comprises approximately 640 families, 9000 genera, and 93,000 described specie...
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Fossils provide the only direct evidence of the evolutionary history of primates. A method of phylogeny reconstruction is outlined which is based on an evaluation ofphenetic resemblances of fossils interpreted in their stratigraphiccontext. This stratopheneti¢ approach to phylogeny involves three successive steps: (1) organization of fossils stratigraphically, (2) phenetie linking of similar fo...
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In order to resolve better the deep relationships among salticid spiders, we compiled and analyzed a molecular dataset of 169 salticid taxa (and 7 outgroups) and 8 gene regions. This dataset adds many new taxa to previous analyses, especially among the non-salticoid salticids, as well as two new genes - wingless and myosin heavy chain. Both of these genes, and especially the better sampled wing...
متن کاملSystematics of the Damon variegatus group of African whip spiders (Chelicerata: Amblypygi): Evidence from behaviour, morphology and DNA
The African whip spider, Damon variegatus, exhibits a broad, discontinuous distribution from the Congo, through western Tanzania and Zimbabwe, to South Africa and Namibia. Variation in size, number of antenniform leg segments, and colouration, taken together with a discontinuous distribution, suggest that allopatric populations of D. variegatus may be reproductively isolated, and more than one ...
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ژورنال
عنوان ژورنال: BMC Evolutionary Biology
سال: 2017
ISSN: 1471-2148
DOI: 10.1186/s12862-017-0931-1