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310 results for “testudines”
FIGURE 4 in A new species of the Genus Pelodiscus Fitzinger, 1835 (Testudines: Trionychidae) from Huangshan, Anhui, China
FIGURE 4. Head and neck of Pelodiscus huangshanensis sp. nov.; A, B ANU20210001, male; C, D ANU20210004, juvenile.
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)
FIGURE 1 in Morphology of the lectotype of Chelodina oblonga Gray 1841 (Testudines: Chelidae)
FIGURE 1. Dorsal and ventral aspects of the C. oblonga lectotype specimen NHMUK 40.12.9.81 / 1947.3.5.89 (photos P. Campbell, courtesy of The Natural History Museum, London).
FIGURE 2 in Morphology of the lectotype of Chelodina oblonga Gray 1841 (Testudines: Chelidae)
FIGURE 2. Chelodina oblonga paralectotype specimen OUMNH ZC.02584 (photo Katherine Child, courtesy of Oxford University Museum of Natural History).
FIGURE 11. Vertebrals 2 and 3 in Morphology of the lectotype of Chelodina oblonga Gray 1841 (Testudines: Chelidae)
FIGURE 11. Vertebrals 2 and 3 in (A) C. oblonga lectotype; (B) C. oblonga paralectotype; (C) C. oblonga NHMUK 52.11.12.1 / 1947.3.5.90 (Swan River, WA, syntype of C. colliei); (D) C. kurrichalpongo NHMUK 42.1.12.123 (Port Essington, N.T.); (E) C. kurrichalpongo AMS R129353 (Cobourg Peninsula, NT). In C. oblonga (A, B, C) the sulcus between V1 and V2 (a) is usually straight; the microtopography of the medial portions of V2 and V3 (b) consists of broadly rounded nodules while the lateral portions (c) have narrow longitudinal striations and the vertebrals have shallow insertions (d) into pleurals. In C. kurrichalpongo (D, E) the sulcus between V1 and V2 (e) is usually curved; the microtopography is uniform across V2 and V3 (f); or the medial portions have narrow longitudinal striations (g), while lateral portions (h) tend to have more broadly rounded nodules and the vertebrals have deeper insertions (i) into pleurals. (photo (B) Katherine Child, courtesy of Oxford University Museum of Natural History); photo (E): Ross Sadlier).
FIGURE 8 in Morphology of the lectotype of Chelodina oblonga Gray 1841 (Testudines: Chelidae)
FIGURE 8. (A) Radiograph of C. oblonga lectotype. (B) Interpretive detail of skeletal carapace showing shape and size of hyoplastron sutures with costal 1 (arrowed); discernible portions of neurals (red) and sutural contact between nuchal (green) and peripheral 2 (blue) excluding peripheral 1 (yellow) from costal 1 (purple). (radiograph P. Campbell, courtesy of The Natural History Museum, London)
FIGURE 2 in First record of albinism in the Crowned River Turtle, Hardella thurjii, Gray, 1831 (Reptilia: Testudines, Geoemydidae)
FIGURE 2: Eye colouration in Hardella thurjii: A) Typical – yellowish brown iris, black pupil; B) Albinistic – pinkish iris, red pupil. Photographs by S. Dutta.
FIGURE 1 in First record of albinism in the Crowned River Turtle, Hardella thurjii, Gray, 1831 (Reptilia: Testudines, Geoemydidae)
FIGURE 1: Typical and albinistic Crowned River Turtle (Hardella thurjii): A) Typical male with normal dark brown colouration with yellow stripes on head and margins of costal and marginal scutes (Photograph by S. Singh); Albinistic male, dorsal view (B), ventral view (C) (Photographs by S. Dutta).
Taxonomic revision of Chinemys pani (Testudines: Geoemydidae) from the Pleistocene of Taiwan and its implications of conservation paleobiology
<p>Proper taxonomic identification is critical to our understanding of biodiversity and the underlying evolutionary history. Here we re-examine the cast of the holotype of <em>Chinemys pani</em>, a geoemydid turtle from the Pleistocene of Taiwan; the actual specimen was not curated appropriately after the original publication and was most likely lost. Our results provide substantial evidence to show that <em>Chinemys pani</em>should be identified as <em>Mauremys reevesii</em>. The replica, though not ideal, preserves various morphological features that allow reliable taxonomic identification to <em>Mauremys reevesii</em>, including the presence of three longitudinal keels on the carapace, the second to sixth neural bones anteriorly short-sided, the lack of movable plastral hinge. In addition, we also confirm that the original diagnostic features that established the new taxon: <em>Chinemys pani</em>– are polymorphic characters of <em>Mauremys reevesii</em>. Our taxonomic revision of a Pleistocene geoemydid turtle from Taiwan resolves the debate on whether <em>Mauremys reevesii</em>should be a native turtle in Taiwan instead of an introduced invasive species. More importantly, this study offers new insights into the origin of modern biodiversity in Taiwan and gives a straightforward example of how fossils can be applied to conservation policies.Proper taxonomic identification is critical to our understanding of biodiversity and the underlying evolutionary history. Here we re-examine the cast of the holotype of <em>Chinemys pani</em>, a geoemydid turtle from the Pleistocene of Taiwan; the actual specimen was not curated appropriately after the original publication and was most likely lost. Our results provide substantial evidence to show that <em>Chinemys pani</em>should be identified as <em>Mauremys reevesii</em>. The replica, though not ideal, preserves various morphological features that allow reliable taxonomic identification to <em>Mauremys reevesii</em>, including the presence of three longitudinal keels on the carapace, the second to sixth neural bones anteriorly short-sided, the lack of movable plastral hinge. In addition, we also confirm that the original diagnostic features that established the new taxon: <em>Chinemys pani</em>– are polymorphic characters of <em>Mauremys reevesii</em>. Our taxonomic revision of a Pleistocene geoemydid turtle from Taiwan resolves the debate on whether <em>Mauremys reevesii</em>should be a native turtle in Taiwan instead of an introduced invasive species. More importantly, this study offers new insights into the origin of modern biodiversity in Taiwan and gives a straightforward example of how fossils can be applied to conservation policies.</p>
FIGURE 2 in Phylogenetic and divergence time analysis of the Chelonoidis chilensis complex (Testudines: Testudinidae)
FIGURE 2. Phylogenetic trees of the genus Chelonoidis, including the C. chilensis complex, obtained by three different criteria. A: Maximum Parsimony, B: Maximum Likelihood, C: Bayesian Inference. The numbers above the nodes indicate bootstrap support scores (A and B) and posterior probability scores (C). Clade colors refer to the corresponding eco–regions (see Fig. 1).
FIGURE 1 in Phylogenetic and divergence time analysis of the Chelonoidis chilensis complex (Testudines: Testudinidae)
FIGURE 1. Map of Argentina showing the localities from which the tissue samples were taken. Different colors indicate different eco–regions. Legends near sample localities are in accordance with the haplotypes shown in the phylogenetic trees (Fig. 2).
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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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