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60 results for “giant tortoises”
Data from: Tropical ancient DNA reveals relationships of the extinct Bahamian giant tortoise Chelonoidis alburyorum
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Data from: Naturally rare versus newly rare: demographic inferences on two timescales inform conservation of Galápagos giant tortoises
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Data from: Population genomics through time provides insights into the consequences of decline and rapid demographic recovery through head-starting in a Galapagos giant tortoise
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Data from: In the land of giants: habitat use and selection of the Aldabra giant tortoise on Aldabra Atoll
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Data from: Genetic rediscovery of an ‘extinct’ Galápagos giant tortoise species
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Data from: Persistence of distinctive morphotypes in the native range of the CITES-listed Aldabra giant tortoise
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Data from: Patterns of activity and body temperature of Aldabra giant tortoises in relation to environmental temperature
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Data from: Genome-wide assessment of diversity and divergence among extant Galápagos giant tortoise species
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Data from: Genetic pedigree analysis of the pilot breeding program for the rediscovered Galapagos giant tortoise from Floreana island
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Data from: A new lineage of Galapagos giant tortoises identified from museum samples
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Galapagos giant tortoise trafficking case demonstrates the utility and applications of long-term comprehensive genetic monitoring
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Ancient mitogenomics clarifies radiation of extinct Mascarene giant tortoises (Cylindraspis spp.)
<p>The five extinct giant tortoises of the genus <i>Cylindraspis</i> belong to the most iconic species of the enigmatic fauna of the Mascarene Islands that went largely extinct after the discovery of the islands. To resolve the phylogeny and biogeography of <i>Cylindraspis</i>, we analysed a data set of 45 mitogenomes that includes all lineages of extant tortoises and eight near-complete sequences of all Mascarene species extracted from historic and subfossil material. <i>Cylindraspis </i>is an ancient lineage that diverged as early as the late Eocene. Diversification of <i>Cylindraspis</i> commenced in the mid-Oligocene, long before the formation of the Mascarene Islands. This rejects any notion suggesting that the group either arrived from nearby or distant continents over the course of the last millions of years or had even been translocated to the islands by humans. Instead, <i>Cylindraspis</i> likely originated on now submerged islands of the Réunion Hotspot and utilized these to island hop to reach the Mascarenes. The final diversification took place both before and after the arrival on the Mascarenes. With <i>Cylindraspis</i> a deeply divergent clade of tortoises became extinct that evolved long before the dodo or the Rodrigues solitaire, two other charismatic species of the lost Mascarene fauna.</p>
doi:10.1371/journal.pone.0138779.g006 in Description of a New Galapagos Giant Tortoise Species (Chelonoidis; Testudines: Testudinidae) from Cerro Fatal on Santa Cruz Island
doi:10.1371/journal.pone.0138779.g006
doi:10.1371/journal.pone.0138779.g004 in Description of a New Galapagos Giant Tortoise Species (Chelonoidis; Testudines: Testudinidae) from Cerro Fatal on Santa Cruz Island
doi:10.1371/journal.pone.0138779.g004
doi:10.1371/journal.pone.0138779.g005 in Description of a New Galapagos Giant Tortoise Species (Chelonoidis; Testudines: Testudinidae) from Cerro Fatal on Santa Cruz Island
doi:10.1371/journal.pone.0138779.g005
FIGURE 5 in A new species of extinct Late Quaternary giant tortoise from Hispaniola
FIGURE 5. Schematic interpretation of surface features of plastron and carapace fragments of Chelonois marcanoi sp. nov. from Pedernales Province, Dominican Republic, showing natural borders (thick solid lines), broken borders (dotted lines), sutures (dashed lines), external sulci (thin solid lines), and internal ridges associated with costal ribs (grey filled lines). a, external surface of epiplastron fragment (MNHNSD FOS 23.1056); b, external surface of epiplastron fragment (MNHNSD FOS 23.1060); c, internal surface of costal fragment (NHMUK PV R 36955); d, external surface of peripheral fragment (MNHNSD FOS 23.1061); e, external surface of fragment from border of carapacial rim, including two peripherals and part of costal plate (MNHNSD FOS 23.1062). All specimens drawn to scale.
Figure 12A-D. A in A fossil giant tortoise from the Mehrten Formation of Northern California
Figure 12A-D. A. Cross-section of Mehrten carapace with sulcus pressed into bone, UCMP 134832. B. Profile of Gopherus carapace, edges of sulci are perched, MVZ 209313. C. Posterior view of Gopherus agassizi carapace showing shape of pygal and perched sulci, MVZ 209313. D. Ventral view of a Gopherus agassizi plastron showing length of the pectoral scale in the midline relative to total length of the plastron, MVZ 209313.
Figure 6A-G in A fossil giant tortoise from the Mehrten Formation of Northern California
Figure 6A-G. Elements of the anterior plastron. A. Ventral view of UCMP 131794, anterior plastral lobe including left and right epiplastra, entoplastron, right and partial left hyoplastron. B. Locations of sutures, dark grey and sulci, light grey. C. Entoplastron, UCMP 134832. Ventral view of sulci, separating humeral scales and gular scales visible. D. Dorsal View of left epiplastron, UCMP 137147. E. Ventral view showing sulcus between gular and humeral scales. F. Ventral view of Partial left hyoplastron, UCMP 95919, showing sulci between humeral, pectoral, and abdominal scales. G. Location of sulci. Scale bars=4 cm.
Ancient mitogenomics clarifies radiation of extinct Mascarene giant tortoises (Cylindraspis spp.)
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Figure 2 in A fossil giant tortoise from the Mehrten Formation of Northern California
Figure 2. Central Valley of California showing locations of Turlock Lake and Modesto Reservoir.
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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.
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DANDI Archive for NWB datasets
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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.