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15 results for “onychophorans”
Data from: Onychophoran-like musculature in a phosphatized Cambrian lobopodian
The restricted, exclusively terrestrial distribution of modern Onychophora contrasts strikingly with the rich diversity of onychophoran-like fossils preserved in marine Cambrian Lagerstätten. The transition from these early forebears to the modern onychophoran body plan is poorly constrained, in part due to the absence of fossils preserving details of the soft anatomy. Here we report muscle tissue in a new early Cambrian (Stage 3) lobopodian, Tritonychus phanerosarkus gen. et sp. nov., preserved in the Orsten fashion by three-dimensional replication in phosphate. This first report of Palaeozoic onychophoran musculature establishes peripheral musculature as a characteristic of the ancestral panarthropod, but documents an unexpected muscular configuration. Phylogenetic analysis reconstructs T. phanerosarkus as one of a few members of the main onychophoran lineage – which was as rare and as cryptic in the Cambrian period as it is today.
Carboniferous Onychophora from Montceau-les-Mines, France, and onychophoran terrestrialization - SI File 01.
<p>A zip file containing 3D models of of <em>Antennipatus montceauensis </em>gen. nov., sp. nov., in the VAXML interchange format, which can be open with the freely available software SPIERS (spiers-software.org).</p>
Fig. 5 in A new giant egg-laying onychophoran (Peripatopsidae) reveals evolutionary and biogeographical aspects of Australian velvet worms
Fig. 5 Colour pattern variation in Ooperipatellus nickmayeri sp. nov. Images of walking specimens in dorsal view (left) and detail of the corresponding colour pattern along the dorsal midline (right). In all
Fig. 4 in A new giant egg-laying onychophoran (Peripatopsidae) reveals evolutionary and biogeographical aspects of Australian velvet worms
Fig. 4 Karyotype of Ooperipatellus nickmayeri sp. nov. Light micrograph of mitotic chromosomes stained with Giemsa and sorted according to their size and morphology. Inset in the lower right corner
Fig. 3 in A new giant egg-laying onychophoran (Peripatopsidae) reveals evolutionary and biogeographical aspects of Australian velvet worms
Fig. 3 Features associated with female reproductive structures in Ooperipatellus nickmayeri sp. nov. Scanning electron micrographs. In all images, the anterior orientation is at the top of the figure, with posterior at the bottom. a Posterior-most body region bearing a conspicuous ovipositor, which is characteristic of Ooperipatellus. b Detail of the
Fig. 7 in A new giant egg-laying onychophoran (Peripatopsidae) reveals evolutionary and biogeographical aspects of Australian velvet worms
Fig. 7 Cephalic structures in Ooperipatellus nickmayeri sp. nov. Scanning electron micrographs. In all images, the anterior orientation is at the top of the figure, with posterior at the bottom. a Overview of the head. The lack of sclerotized/eversible head organs and/or modified head papillae is a characteristic feature of Ooperipatellus. Arrow points to remnant of ejected slime on the head of the specimen. b Detail of
Data from: Onychophoran-like myoanatomy of the Cambrian gilled lobopodian Pambdelurion whittingtoni
Open the record for dataset details and reuse information.
Data from: Onychophoran-like musculature in a phosphatized Cambrian lobopodian
Open the record for dataset details and reuse information.
Data from: Functional morphology of a lobopod: case study of an onychophoran leg
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Fig. 10 in A new giant egg-laying onychophoran (Peripatopsidae) reveals evolutionary and biogeographical aspects of Australian velvet worms
Fig. 10 Phylogenetic relationships among representative onychophorans, including Ooperipatellus nickmayeri sp. nov. Maximum likelihood topology combining the 12S rRNA, 16S rRNA, 18S rRNA and 28S rRNA with COI nucleotide sequences excluding the third codon position. Four
Fig. 2 in A new giant egg-laying onychophoran (Peripatopsidae) reveals evolutionary and biogeographical aspects of Australian velvet worms
Fig. 2 Features associated with male reproductive structures in Ooperipatellus nickmayeri sp. nov. Scanning electron micrographs. In all images, the anterior orientation is at the top of the figure, with posterior at the bottom. a Genital pad in overview. The posterior border of the genital pad appears modified into a conspicuous swollen area (dotted lines) in males of this species. Note the characteristic genital opening of Ooperipatellus, the cruciform opening of which divides the genital pad completely on the transverse but not on the longitudinal axis. b Detail of the modified area of the genital pad. Note the lack of dermal
Fig. 6 in A new giant egg-laying onychophoran (Peripatopsidae) reveals evolutionary and biogeographical aspects of Australian velvet worms
Fig. 6 Head and ventral colour pattern in Ooperipatellus nickmayeri sp. nov. Images of living specimens. In all images, the anterior orientation is at the left of the figure, with posterior at the right. a Head colour pattern. Note the banded antennae and the orange/tan slime papillae. Antennal rings that normally appear orange/tan are numbered according to their
Fig. 1 in A new giant egg-laying onychophoran (Peripatopsidae) reveals evolutionary and biogeographical aspects of Australian velvet worms
Fig. 1 Geographical position and relative size of Ooperipatellus nickmayeri sp. nov. Maps on the left indicate the approximate position (red dot) of the collecting site where the new species was found in Tasmania, Australia. Drawings on the right side represent a comparison to scale of O. nickmayeri sp. nov. (black), reconstructed from photographs of walking
Fig. 9 in A new giant egg-laying onychophoran (Peripatopsidae) reveals evolutionary and biogeographical aspects of Australian velvet worms
Fig. 9 Structures associated with the legs in Ooperipatellus nickmayeri sp. nov. Scanning electron micrographs. In all images, the distal orientation is at the top of the figure, with proximal at the bottom. Spinous pads are numbered from distal to proximal and fragmented pads are delimited by dotted lines. Spineless integumentary fold between the second and third pads is artificially coloured green. a A leg from the midbody. b Detail of the spineless integumentary fold. This
Fig. 8 in A new giant egg-laying onychophoran (Peripatopsidae) reveals evolutionary and biogeographical aspects of Australian velvet worms
Fig. 8 Dermal papillae in Ooperipatellus nickmayeri sp. nov. Scanning electron micrographs. Black circles with white centre indicate the number of scale ranks in primary and accessory papillae. a Primary papilla equipped with sensorial bristle. b Accessory papillae lacking sensorial bristle. c Distribution of type I (artificially coloured blue) and type II (artificially coloured purple) crater-shaped papillae. Ventral side
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Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
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