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.
35
datasets available to search
ShareScore release 0.9.0
Dataset results
35 results for “Chelodina”
FIGURE 3 in The identity of Chelodina oblonga Gray 1841 (Testudines: Chelidae) reassessed
FIGURE 3. Dorsal view of the paralectotype of Chelodina oblonga Gray (OUMNH 02584). (Image courtesy of K. Child, OUMNH).
FIGURE 2 in The identity of Chelodina oblonga Gray 1841 (Testudines: Chelidae) reassessed
FIGURE 2. Illustration of Chelodina oblonga by Gray (1841), based on BMNH 1947.3.5.89. Compare with photographs of the same specimen in Figure 1.
FIGURE 1 in The identity of Chelodina oblonga Gray 1841 (Testudines: Chelidae) reassessed
FIGURE 1. Ventral, left lateral and dorsal views of the lectotype of Chelodina oblonga Gray (BMNH 1947.3.5.89). The lateral image is slightly dorsally angled, affecting the profile of the carapace. (Image courtesy of P. Campbell, BMNH).
FIG. 10. — A, Chelodina alanrixi n in Eocene chelid turtles from Redbank Plains, Southeast Queensland, Australia
FIG. 10. — A, Chelodina alanrixi n. sp., form 1, Redbank Plains, Queensland, Eocene (QM F18344), 40-41 cm long, reconstruction of the carapace, dorsal view, missing parts doted, presenting generic identities and specific differences with C. expansa in B-D; a, flattened, large and wide carapace as in C. expansa; b, narrow vertebrals, the first one narrower than the nuchal bone, the second to fourth narrower than the first and fifth, the third particularly narrow, vertebrals narrower than in C. expansa except the fifth that is wider than the suprapygal bone; c, polygons of the decoration c. 1/3 smaller than in C. expansa (see D and compare with Fig. 1B); d, 8 neurals present, against no one in C. expansa; e, vertebral 5 wider than the suprapygal contrarily to C. expansa; f, long and flat posterior extremity, as in C. expansa, slightly pointed as in males in C. expansa; B, C. expansa, extant (MNHN AC 1914-178), 37.5 cm long; a, large and wide carapace as in C. alanrixi n. sp. (anteriorly narrower in males); b, wide vertebral 1 wider than the nuchal bone, the vertebrals 2 to 4 (the fourth subdivided) progressively narrowing; c, large polygons (see D); d, no neurals (never); e, vertebral 5 narrower than the suprapygal; f, long and flat posterior extremity, slightly pointed as in C. alanrixi n. sp. but more rounded border (a female); C, C. expansa Gray, 1856 (pl. XII), holotype, from Goode (1967) and Wermuth & Mertens (1961), 35 cm long, a male (anteriorly narrower and posteriorly pointed, plastron with a concavity); D, C. expansa, extant (MNHN AC 1914-178), 37.5 cm long, detail of the decoration of the carapace in the area of the vertebral 4 (subdivided here), compare with Fig. 1B. Scale bars: A, B, 10 cm; D, 2 cm.
FIG. 3. — Chelodina alanrixi n in Eocene chelid turtles from Redbank Plains, Southeast Queensland, Australia
FIG. 3. — Chelodina alanrixi n. sp., form 1, Redbank Plains, Queensland, Eocene (QM F18344), posterior part of the shell, impression of the internal face of the Fig. 1A. Abbreviations: il, iliac scar below pleural 8 and suprapygal; M12, marginal scute 12; pl8, pleural 8; py, pygal; spp, suprapygal. Scale bar: 5 cm.
Figure 7 in Electrophoretic delineation of species boundaries within the genus Chelodina (Testudines: Chelidae) of Australia, New Guinea and Indonesia
Figure 7. The phylogeny most strongly supported by our electrophoretic data. Note that C. reimanni and C. novaeguineae could not be separated electrophoretically, but we retain them as separate on the basis of morphological evidence (Philippen & Grossman, 1990; Rhodin, 1994a). The symbols + show the progressive development of robusticity in both the skull and triturating surfaces.
Figure 6 in Electrophoretic delineation of species boundaries within the genus Chelodina (Testudines: Chelidae) of Australia, New Guinea and Indonesia
Figure 6. The best-supported phylogeny for the Chelodina prior to the present electrophoretic study (Burbidge et al., 1974; Rhodin & Mittermeier, 1976; Georges & Adams, 1992; Rhodin, 1994a,b). The root was chosen on the basis of evidence presented by Georges & Adams (1992), Seddon et al. (1997) and Georges et al. (1998). This phylogeny serves as the working hypotheses against which to compare our data. Only those taxa we regard to be species are included.
Figure 2 in Electrophoretic delineation of species boundaries within the genus Chelodina (Testudines: Chelidae) of Australia, New Guinea and Indonesia
Figure 2. Principal co-ordinates analysis applied to a matrix of Roger's D genetic distances between all individuals of Chelodina expansa. The plot shows a degree of differentiation between coastal Queensland forms (Albert River in the south to Fitzroy–Dawson River in the north, including Fraser Island) (O) and those of the Murray-Darling system (•), but these differences have not moved to fixation at any locus (45 loci).
Figure 3 in Electrophoretic delineation of species boundaries within the genus Chelodina (Testudines: Chelidae) of Australia, New Guinea and Indonesia
Figure 3. Principal co-ordinates analysis applied to a matrix of Roger's D genetic distances between all individuals of Chelodina rugosa (Queensland form) (O), C. rugosa (Northern Territory form) (Z), C. siebenrocki (•), Chelodina burrungandjii (O) and an undescribed form from the Kimberley plateau of Western Australia (Ɨ). A hybrid between Chelodina burrungandjii and C. rugosa (Northern Territory form) is included (). Three groups are evident. Chelodina burrungandjii and the undescribed form from the Kimberley plateau are undifferentiated and probably represent a single taxon. Chelodina seibenrocki and the Queensland form of C. rugosa are undifferentiated, and also probably represent a single taxon. The Northern Territory form of C. rugosa represents the third group. These three groups differ each by only one fixed difference.
Data from: Phylogeography of the Australian freshwater turtle Chelodina expansa reveals complex relationships among inland and coastal bioregions
We examined range-wide mitochondrial phylogeographic structure in the riverine freshwater turtle Chelodina expansa to determine if this species exhibits deep genetic divergence between coastal and inland hydrological provinces as seen in co-distributed freshwater taxa. We sequenced two mitochondrial loci, genealogical relationships were assessed using a network approach, and relationships among biogeographic regions were tested using analyses of molecular variance. Population history was evaluated using neutrality tests, indices of demographic expansion, and mismatch analyses. Twenty one haplotypes were recovered across two mitochondrial haplogroups separated by ca 4% nucleotide divergence. The haplogroups have discrete geographic boundaries but only partially support a hypothesis of deep divergence between coastal and inland bioregions. The first haplogroup comprises populations from the inland Murray-Darling Basin and from coastal catchments south of the Mary River in southeast Queensland. The second haplogroup comprises populations from coastal catchments north of the Mary River. Cryptic phylogeographic barriers separating adjacent coastal populations are congruent with those demonstrated for other freshwater taxa and may result from the combined influences of the Conondale Range and alluvial deposits at the mouth of the Mary River. Our study demonstrates that freshwater taxa commonly display genetic differentiation within a biogeographic region where no boundaries have been recognised, highlighting the need to uncover cryptic microbiogeographic regions to aid conservation of freshwater biota.
FIGURE 14 in Morphology of the lectotype of Chelodina oblonga Gray 1841 (Testudines: Chelidae)
FIGURE 14. Thoracic skeletal surface of anterior carapace. (A) C. kurrichalpongo MAGNT R24814 (Humpty Doo, NT) showing (a) the usual condition of peripheral 1 in sutural contact with costal 1 in Chelodina (Chelydera); (b) scar of the hyoplastron suture with costals 1 and 2 showing its long, clubbed shape in this species and (c) attachment rugosity for retrehans capitus collique muscles. (B) C. oblonga WAM R29362 (Shenton Park, WA) showing (a) the variable condition known to occur within Chelodina only in C. oblonga, and which exists in the lectotype, in which the nuchal and peripheral 2 meet in a short suture behind peripheral 1 excluding it from contact with costal 1 and (b) scar of the hyoplastron suture with costal 1 showing its broad shape with short medial taper.
FIGURE 12 in Morphology of the lectotype of Chelodina oblonga Gray 1841 (Testudines: Chelidae)
FIGURE 12. Longitudinal shell profile of (A) C. oblonga lectotype; (B) C. oblonga WAM R828 (Lake Preston, WA); (C) C. kurrichalpongo AM R175589 (Cobourg Peninsula, NT). Note shallow, angular profile of C. oblonga and evenly rounded profile of C. kurrichalpongo and comparative positions of (a) greatest shell depth and (b) lowest point of the marginal rim.
FIGURE 10 in Morphology of the lectotype of Chelodina oblonga Gray 1841 (Testudines: Chelidae)
FIGURE 10. Anterior shell profile of (A) C. oblonga lectotype; (B) C. oblonga WAM R37039 (Susetta River WA); (C) C. kurrichalpongo WAM R23898 (Katherine, NT). Note shallow carapace profile with vertebral depression and delicate curved axillary bridge struts in C. oblonga compared to evenly domed carapace shape with large, almost parallel-sided axillary bridge struts in C. kurrichalpongo.
FIGURE 9 in Morphology of the lectotype of Chelodina oblonga Gray 1841 (Testudines: Chelidae)
FIGURE 9. Comparative ratios of maximum carapace width:carapace length of C. oblonga and C. kurrichalpongo plotted against carapace length. C. oblonga generally has a narrower carapace, however for some individuals including the C. oblonga lectotype, this character is not discriminatory.
FIGURE 7 in Morphology of the lectotype of Chelodina oblonga Gray 1841 (Testudines: Chelidae)
FIGURE 7. Detail of C. oblonga lectotype with plastron removed, showing neck shortened in taxidermy by eversion of neck skin into the thoracic cavity.
FIGURE 6 in Morphology of the lectotype of Chelodina oblonga Gray 1841 (Testudines: Chelidae)
FIGURE 6. Chelodina oblonga lectotype with plastron removed, showing (a) everted neck skin and (b) pale mark in detritus on thoracic costals.
FIGURE 15 in Morphology of the lectotype of Chelodina oblonga Gray 1841 (Testudines: Chelidae)
FIGURE 15. Thoracic vertebrae in (A) Chelodina oblonga lectotype; (B) C. oblonga WAM R29363 (Shenton Park, WA) and (C) C. kurrichalpongo MAGNT R24813 (Darwin, NT). Note similarity between all in size of rib heads and arches.
FIGURE 4 in Morphology of the lectotype of Chelodina oblonga Gray 1841 (Testudines: Chelidae)
FIGURE 4. Specimens of C. oblonga from Swan River, south-western Western Australia designated by Gray (1856a, b) as syntypes of C. colliei. (A) NHMUK 52.11.12.1 / 1947.3.5.90; (B) NHMUK 52.11.12.2 / 1947.3.5.91.
FIGURE 3 in Morphology of the lectotype of Chelodina oblonga Gray 1841 (Testudines: Chelidae)
FIGURE 3. Lithographic plate (left) of "Chelodina oblonga" reproduced from Gray (1856a), where it lacks any specimen number or indication of provenance. As per the standard lithographic process, the final printed illustrations are horizontally inverted from the original stone etching drawn from the specimen. Photographs (right) of NHMUK 42.1.13.123, which has the same unique abnormality of posterior vertebrals and is the specimen from Port Essington in modern Northern Territory, Australia figured in Gray's plate.
FIGURE 5 in Morphology of the lectotype of Chelodina oblonga Gray 1841 (Testudines: Chelidae)
FIGURE 5. Specimens of C. kurrichalpongo from northern Australia assigned by Gray (1856a, b) to C. oblonga. (A) NHMUK 42.1.12.123 Port Essington; (B) NHMUK 46.7.27.5 / MCZ R28758 Port Essington; (C) NHMUK 50.12.9.5 North Australia (photo (B) by courtesy of the Museum of Comparative Zoology and Harvard University)
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.