|
Euonychophora
Euonychophora is an order of Onychophora representing all living onychophorans; the Peripatidae (including the fossil †'' Cretoperipatus'') and Peripatopsidae. Their feet possess a pair of claws and a pad, and are covered with pustules. All remaining onychophorans are fossil species in the order Ontonychophora Ontonychophora is an extinct order of onychophoran consisting of organisms with simple lobopods that lack terminal feet. It includes all fossil onychophorans except †'' Cretoperipatus'', which is in the Euonychophora along with all remaining m .... References External links * Onychophoran orders {{Onychophore-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onychophora
Onychophora (from grc, ονυχής, , "claws"; and , , "to carry"), commonly known as velvet worms (due to their velvety texture and somewhat wormlike appearance) or more ambiguously as peripatus (after the first described genus, '' Peripatus''), is a phylum of elongate, soft-bodied, many-legged panarthropods. In appearance they have variously been compared to worms with legs, caterpillars, and slugs. They prey upon other invertebrates, which they catch by ejecting an adhesive slime. Approximately 200 species of velvet worms have been described, although the true number of species is likely greater. The two extant families of velvet worms are Peripatidae and Peripatopsidae. They show a peculiar distribution, with the peripatids being predominantly equatorial and tropical, while the peripatopsids are all found south of the equator. It is the only phylum within Animalia that is wholly endemic to terrestrial environments, at least among extant members. Velvet worms are generally c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onychophora
Onychophora (from grc, ονυχής, , "claws"; and , , "to carry"), commonly known as velvet worms (due to their velvety texture and somewhat wormlike appearance) or more ambiguously as peripatus (after the first described genus, '' Peripatus''), is a phylum of elongate, soft-bodied, many-legged panarthropods. In appearance they have variously been compared to worms with legs, caterpillars, and slugs. They prey upon other invertebrates, which they catch by ejecting an adhesive slime. Approximately 200 species of velvet worms have been described, although the true number of species is likely greater. The two extant families of velvet worms are Peripatidae and Peripatopsidae. They show a peculiar distribution, with the peripatids being predominantly equatorial and tropical, while the peripatopsids are all found south of the equator. It is the only phylum within Animalia that is wholly endemic to terrestrial environments, at least among extant members. Velvet worms are generally c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ontonychophora
Ontonychophora is an extinct order of onychophoran consisting of organisms with simple lobopods that lack terminal feet. It includes all fossil onychophorans except †'' Cretoperipatus'', which is in the Euonychophora along with all remaining members of the phylum. Families :*†Helenodoridae *†Tertiapatoidea :*† Tertiapatidae :*†Succinipatopsidae ''Succinipatopsis'' is an extinct onychophoran genus known from Eocene-aged Baltic amber The Baltic region is home to the largest known deposit of amber, called Baltic amber or succinite. It was produced sometime during the Eocene epoch, b ... References Onychophoran orders Prehistoric onychophorans Prehistoric animal orders {{paleo-protostome-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peripatidae
Peripatidae is a family of velvet worms. The oldest putative representatives of the family herald from Burmese amber dated to the mid-Cretaceous, around 100 Ma, with representatives from Dominican and Baltic amber attesting to a broader distribution in the Palaeogene / Neogene; molecular variability suggests that the family's crown group may have arisen in the early Mesozoic. Description The Peripatidae exhibit a range of derivative features. They are longer, on average, than the Peripatopsidae and also have more leg pairs. The number of leg pairs in the Peripatidae range from 19 (in ''Typhloperipatus williamsoni'') to 43 (in ''Plicatoperipatus jamaicensis''). The gonopore is always between the penultimate leg pair. There are no oviparous species—the overwhelming majority are viviparous. The females of many viviparous species develop a placenta with which to provide the growing embryo with nutrients. Distribution The Peripatidae are restricted to the tropical and subtropical z ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peripatopsidae
Peripatopsidae is one of the two living velvet worm families. Description The Peripatopsidae exhibit relatively many characteristics that are perceived as original or "primitive" with respect to the Peripatidae. The number of leg pairs in this family range from as few as 13 (in ''Ooperipatellus nanus'') to as many as 29 (in ''Paraperipatus papuensis''). Behind or between the last leg pair is the genital opening (gonopore). Both oviparous and ovoviviparous, as well as genuinely viviparous, species exist, although the Peripatopsidae essentially lack a placenta. Distribution The distribution of the Peripatopsidae is circumaustral; in particular, they inhabit Australasia, South Africa and Chile. Genera The family contains the following genera: * '' Acanthokara'' Reid, 1996 * '' Aethrikos'' Reid, 1996 * '' Aktinothele'' Reid, 1996 * ''Anoplokaros'' Reid, 1996 * '' Austroperipatus'' Baehr, 1977 * '' Baeothele'' Reid, 1996 * ''Centrorumis'' Reid, 1996 * '' Cephalofovea'' Ruhberg et al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cretoperipatus
''Cretoperipatus burmiticus'' is an extinct species of velvet worm that is known from Cretaceous Burmese amber approximately 100 million years old. It was found in Kachin state, Myanmar. Taxonomy The species can be assigned to one of the modern families, the Peripatidae. While only five leg pairs can be discerned, the information gained from the fossil is enough to preclude assignment to any known modern genus. Paleontology ''Cretoperipatus burmiticus'' is important in closing a gap between the only other known fossil onychophores, '' Helenodora inopinata'' from the Carboniferous and '' Succinipatopsis balticus'' plus '' Tertiapatus dominicanus'' from the Eocene and Miocene, respectively. It was hypothesised that onychophorans could have migrated from Gondwana to Southeast Asia via the northwards drift of India. Research published in 2016 concluded that the age of Burmese amber supports an earlier migration through Europe. The same study also came to the conclusion that ''T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Onychophora")