Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
122
datasets available to search
ShareScore release 0.9.0
Dataset results
122 results for “Xenodontinae”
Fig. 38 in New Taxa And Cryptic Species Of Neotropical Snakes (Xenodontinae), With Commentary On Hemipenes As Generic And Specific Characters
Fig. 38. Relationships of lateral levator bulbi (lbl) and medial levator bulbi (lbm) muscles to the Vidian nerve (vn) in some elethinophidian snakes: A. Acrochordus granulatus (AMNH R-14185); B. Tropidophis melanurus (AMNH R-82878); C. Loxocemus bicolor (AMNH R-99151); D. Ungaliophis continentalis (AMNH R-93813); E. Anilius scytale (AMNH R-54986); F. Python molurus (AMNH R- 3224); G. Calabaria reinhardtii (AMNH R-11718); H. Nerodia cyclopion (Carolina Biological Supply Co.). Other abbreviations: lp, levator pterygoideus; pp, protractor pterygoideus; pq, protractor quadrati.
Fig. 37 in New Taxa And Cryptic Species Of Neotropical Snakes (Xenodontinae), With Commentary On Hemipenes As Generic And Specific Characters
Fig. 37. Diagrams of the braincase, with parietal bone attached, showing the pathways of trigeminal and facial nerve branches. A. Ctenosaura, a generalized lizard (after Oelrich, 1956, and a specimen from Carolina Biological Supply Co.). B. An alethinophidian snake (simplified and composite, but essentially as in Python). Abbreviations: bp, basipterygoid process; cr, communicating ramus between levator bulbi nerves and palatine ramus of the facial nerve; lbm, levator bulbi muscle (retractor arcus palatini and retractor vomeris muscles in snake); PA, parietal bone; vn, Vidian nerve in strict sense of mammalian anatomy, formed from conjoined palatine ramus of facial nerve and levator bulbi (deep petrosal) nerve; V1, deep ophthalmic ramus of trigeminal nerve; V2, maxillary ramus of trigeminal nerve; V3, mandibular ramus of trigeminal nerve; V41b, levator bulbi nerve (probably homologous to the mammalian deep petrosal nerve); V41p, levator pterygoideus nerve; V4pp, protractor pterygoideus nerve; VIIh, hyomandibular ramus of facial nerve; VIIp, palatine ramus of facial nerve (homologous to the greater superficial petrosal nerve of mammals).
Fig. 36 in New Taxa And Cryptic Species Of Neotropical Snakes (Xenodontinae), With Commentary On Hemipenes As Generic And Specific Characters
Fig. 36. Xenodon rabdocephalus (Wied, 1824). Left. One of two unnumbered folio plates showing ''Coluber rabdocephalus'' in the Abbildungen zur Naturgeschichte Brasiliens (Wied, 1827 [1822–1831], Lief. 10). Right. Same specimen, now AMNH R-3609, lectotype by present designation. This specimen suffered some decomposition in the past, with the body becoming very soft and breaking completely in two parts (arrows show place of break). Telling points of resemblance between painting and specimen are numbered: 1. Longitudinal white line on neck, terminating Y-shaped at first dorsal crossband; 2–6. Anterior and posterior pale edges of dorsal crossbands, showing both resemblances and minor copying errors; asterisk (*) denotes the undivided anal plate. The resemblance between the painting and specimen is very close, allowing for the inevitable accumulated copying errors (i.e., Wied's original pen-and-ink watercolor was copied from life and it in turn was copied by an artist for the published plate).
Fig. 35 in New Taxa And Cryptic Species Of Neotropical Snakes (Xenodontinae), With Commentary On Hemipenes As Generic And Specific Characters
Fig. 35. One of two unnumbered folio plates labeled ''Coluber rabdocephalus'' in the Abbildungen zur Naturgeschichte Brasiliens by Wied (1827 [1822–1831], Lief. 10). The specimen portrayed is no longer extant; it would be a syntype by modern standards.
Fig. 27. A, B in New Taxa And Cryptic Species Of Neotropical Snakes (Xenodontinae), With Commentary On Hemipenes As Generic And Specific Characters
Fig. 27. A, B. Hemipenis of Enulius flavitorques in sulcate and asulcate view. Left organ of AMNH R- 107406, measuring 6.5 mm from base to crown between apical projections, which are about 2.5 mm long. C. Hemipenis of ''Enuliophis'' sclateri, roughly ×6.3. From McCranie and Villa (1993: fig. 1, ''organ 10.6 mm'').
Fig. 31 in New Taxa And Cryptic Species Of Neotropical Snakes (Xenodontinae), With Commentary On Hemipenes As Generic And Specific Characters
Fig. 31. Xenodon rabdocephalus, sensu lato. Living specimens from widely separated parts of its geographic range. A. A juvenile from eastern Panama (Darién, Río Jaque´, 1.5 km above Río Imamadó, 50 m; AMNH R-113392; tentatively assigned to X. angustirostris W. Peters; compare juvenile in figure 30B from western Colombia). B. An adult from Venezuela (Tapirapeco Expedition base camp, 150 m, upper Río Mavaca, Amazonas; AMNH R-134207. Not assigned to species; X. ''rabdocephalus'' barely enters Venezuela.) Photographs by C.W. Myers.
Fig. 20 in New Taxa And Cryptic Species Of Neotropical Snakes (Xenodontinae), With Commentary On Hemipenes As Generic And Specific Characters
Fig. 20. Hemipenis of Xenodon suspectus Cope; left retracted organ of AMNH R-52175 (see fig. 32). The basal half of the organ and the left lobe were opened midventrally, essentially along (and destroying) the sulcus spermaticus. Inset: Greatly enlarged terminus of left lobe, showing an apical cluster of narrow spines.
Fig. 12 in New Taxa And Cryptic Species Of Neotropical Snakes (Xenodontinae), With Commentary On Hemipenes As Generic And Specific Characters
Fig. 12. Maxillary dentition of Eutrachelophis steinbachi (Boulenger). Right maxilla of AMNH R- 125695, in lateral and ventral view. Arrangement of tooth sockets shows a slight lateral offset of the last tooth behind the diastema; the offset is more pronounced in most other ''xenodontines,'' although a few genera have the posterior maxillary teeth arranged in a straight line configuration.
Fig. 9 in New Taxa And Cryptic Species Of Neotropical Snakes (Xenodontinae), With Commentary On Hemipenes As Generic And Specific Characters
Fig. 9. Uneverted hemipenis of Eutrachelophis steinbachi (Boulenger); right organ of AMNH R-125695, opened by midventral incision, ×5. Abbreviation: STB, smooth terminal basin.
Fig. 6 in New Taxa And Cryptic Species Of Neotropical Snakes (Xenodontinae), With Commentary On Hemipenes As Generic And Specific Characters
Fig. 6. Eutrachelophis steinbachi (Boulenger). The paralectotype (BMNH 1946.1.21.63), a juvenile male shown 1.6× life size.
Fig. 19 in New Taxa And Cryptic Species Of Neotropical Snakes (Xenodontinae), With Commentary On Hemipenes As Generic And Specific Characters
Fig. 19. Everted hemipenis of Xenodon rabdocephalus, sensu lato, in sulcate view. Right organ of AMNH R-81935, manually everted (terminus of right lobe burst), from central Panama. Inset: Greatly enlarged terminus of left lobe, showing nude tip lacking an apical disc. The name Xenodon angustirostris W. Peters, 1864, is resurrected herein for populations of X. ''rabdocephalus'' characterized by this kind of hemipenis (compare hemipenis with apical disc in fig. 18).
Fig. 34 in New Taxa And Cryptic Species Of Neotropical Snakes (Xenodontinae), With Commentary On Hemipenes As Generic And Specific Characters
Fig. 34. Xenodon. severus (Linnaeus), AMNH R-3606. This is one of two existing specimens of Xenodon in Prince Maximilian's Brazilian collection at the American Museum. It is cataloged as ''Xenodon rhabocephalus [5 rabdocephalus],'' but it is not one of the two specimens illustrated in the Abbildungen (see figs. 35–36). The cataloged locality for this specimen is ''Guiana,'' which seems to have been copied from the Prince's collection catalog (of taxa, not specimens; see text).
Fig. 4 in New Taxa And Cryptic Species Of Neotropical Snakes (Xenodontinae), With Commentary On Hemipenes As Generic And Specific Characters
Fig. 4. Eutrachelophis species (MZUSP 10530, head in dorsal and lateral view; a female from Cabeceira do Rio Urucu, central Amazonian Brazil). This unnamed snake appears to be the sister species of E. bassleri. See Remarks and compare with figure 2. Formalin preservation caused the integument of this specimen to become slightly translucent, giving visibility to a large ''supralabial'' gland (SG); this large gland (similarly positioned in all three species of Eutrachelophis) is adherent to the medial side of the supralabial integument. The mucous and serous (Duvernoy's) parts of the gland cannot be distinguished in Eutrachelophis without histological examination.
Fig. 15. A in New Taxa And Cryptic Species Of Neotropical Snakes (Xenodontinae), With Commentary On Hemipenes As Generic And Specific Characters
Fig. 15. A. Taeniophallus nicagus (Cope). This small Brazilian snake resembles Eutrachelophis in having 15 dorsal scale rows and an ocellar nuchal pattern. It differs in hemipenial characters from closely related congeners and from all other xenodontines (and nearly all dipsadines) in having an unforked sulcus spermaticus. B. Taeniophallus occipitalis (Jan), a Brazilian specimen. This species displays considerable variation in the head and nuchal color pattern, sometimes resembling T. nicagus above (cf., T. occipitalis in Myers, 1974: fig. 48) (photographs by Marcio Martins).
Fig. 3 in New Taxa And Cryptic Species Of Neotropical Snakes (Xenodontinae), With Commentary On Hemipenes As Generic And Specific Characters
Fig. 3. Hemipenes of Eutrachelophis bassleri, new species. The distal nude section is greatly distensible, becoming hemispherical on eversion. Because of differential tissue expansion, the close-lying branches of the sulcus spermaticus diverge and acquire a centrifugal orientation, entering onto the nude dome from nearly opposite sides of the everted organ. A. Uneverted left hemipenis of AMNH R-55786 (paratype), opened by midventral incision. B. Everted right hemipenis in sulcate view, AMNH R-25193 (paratype; depiction of the manually everted organ). C. Same organ as in B, in asulcate view. D. Distal half of everted hemipenis showing appearance of the maximally inflated, mostly nude dome, from left to right: asulcate side, apex, and sulcate side. Left organ of TCWC 41424, paratype. (This organ previously had been manually turned inside out, but, because the base had been badly damaged, only the distal half was tied off and injected with petroleum jelly in an attempt to determine maximum inflation). Abbreviations: Folds, expansion folds; Mus, major retractor muscle; ND, nude dome; SB, a branch of the sulcus spermaticus; SS, sulcus spermaticus (proximal to bifurcation); Spic, densely spiculate area below and around base of nude dome; SpLg, large lateral and basal spines; SpSm, small spines on sulcate and asulcate faces.
Fig. 1 in New Taxa And Cryptic Species Of Neotropical Snakes (Xenodontinae), With Commentary On Hemipenes As Generic And Specific Characters
Fig. 1. Eutrachelophis bassleri, new species. Dorsal and ventral views of adult specimens: A. AMNH R- 52926 (male holotype), from upper Río Pisqui, Peru. B. AMNH R-53473 (female paratype), from upper Río Utuquinia, Peru, near border with Brazil. The conspicuous nuchal markings are ''cream'' or ''yellow'' in life. Specimens shown life size.
Fig. 2 in New Taxa And Cryptic Species Of Neotropical Snakes (Xenodontinae), With Commentary On Hemipenes As Generic And Specific Characters
Fig. 2. Heads of Eutrachelophis bassleri, new species. A, B. AMNH R-53473, adult female (369 mm total length), in dorsal and lateral view, ×3.9. C. TCWC 41425, juvenile male (160 mm total length), ×2.5. In addition to the white or yellow nuchal markings, the postocular extension of white or yellow labial color (B) is diagnostic of E. bassleri and its unnamed sister species (cf. fig. 4); the white preocular bar is present or absent in E. bassleri.
Map 1 in New Taxa And Cryptic Species Of Neotropical Snakes (Xenodontinae), With Commentary On Hemipenes As Generic And Specific Characters
Map 1. Locality records for three species of Eutrachelophis, new genus, in western and middle Amazonia.
Fig. 26 in New Taxa And Cryptic Species Of Neotropical Snakes (Xenodontinae), With Commentary On Hemipenes As Generic And Specific Characters
Fig. 26. Two small Panamanian snakes, genus Enulius— anatomically similar and apparently closely related—but recently separated generically on the basis of what appears to be extreme variation in the hemipenes (see text and fig. 27). A. Enulius flavitorques (Cope), with a yellow nape band (AMNH R- 109600, Canal Zone, Ancon). B. ''Enuliophis'' sclateri (Boulenger), with an enamel white head (KU 112619, San Blas, Camp Sasardí. Both photographed larger than life by C.W. Myers).
Fig. 8 in New Taxa And Cryptic Species Of Neotropical Snakes (Xenodontinae), With Commentary On Hemipenes As Generic And Specific Characters
Fig. 8. Head of Eutrachelophis steinbachi (Boulenger) (UMMZ 60736), showing details of color pattern. The oblique alignment of the pale ocelli differentiates E. steinbachi from E. bassleri and its unnamed sister species (cf. figs. 2 and 4).
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.