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Velvet worms (Onychophora) | |
 | Luettelo / Luonto / Elämä / Animals (Animalia) / Velvet worms (Onychophora) |
| Luettelo / Kulttuuri / Tiede / Biologia / Organism Biology / Zoology / Invertebrate Zoology / Velvet worms (Onychophora) |
| Luettelo / Kulttuuri / Tiede / Biologia / Organism Biology / Zoology / Taxonomy: Animalia [Metazoa] / Animals Types / Velvet worms (Onychophora) |
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Ecology: The velvet underground
Popular paper about velvet worms from "Nature". [eng] |
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Phylum Arthropoda
Phylum Onychophora: velvet worms: short reference. [eng] |
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eGroups : onychophora Subscribe
Discussion list for any aspect of onychophorans - their biology, phylogenetics, conservation, etc. [eng] |
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Onychophora & Arthropoda Clade
Phylogenetic relationships and characters of taxa. [eng] |
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Onychophora
Short descriptions of morphological characters, picture. [eng] |
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Introduction to the Onychophora
The average resident of the Northern Hemisphere is probably not familiar with the Onychophora; they are restricted to forest regions of South America, Africa, the Caribbean, and Oceania. Shy creatures, able to hide in incredibly tight crevices, these "velvet worms" (about ninety living species known) are rarely seen even in their natural habitat. Yet onychophorans are of great interest to biologists, because they seem to be related to arthropods, and give us an idea of what the ancestors of the arthropods may have been like. Although they are rare as fossils, a number that have been found from the Cambrian period. These fossils show that abundant marine relatives of the Onychophora flourished in the seas 520 million years ago. [eng] |
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TROPIWEB, Onychophora Abstracts, Organization for Tropical Studies (OTS), Costa Rica
Collection of abstracts about Onychophora. [eng] |
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Jurassic-Pliocene biogeography: testing a model with velvet worm (Onychophora) vicariance
Paper by Julián Monge-Nájera. Abstract: Summary paleomaps of continental vegetation from the Jurassic through the Pliocene were prepared (based on the literature) and used to define an area cladogram. Bouvier's natural classification of velvet worms (phylum Onychophora) was used to define a taxonomic/geographic cladogram of onychophorans for all regions where they are found today. Both cladograms show the same sequence of geographic vicariance. Thus, the paleogeographic model is supported by the taxonomic evidence. The paper includes a color atlas. [eng] |
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