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272 results for “crocodiles”
Figure 5 in Towards completing the crocodile newts' puzzle with all-inclusive phylogeographic resources
Figure 5. Nuclear phylogeny of 27 crocodile newt species based on 3.2 kb combining four nuclear introns (POM-C, RAG1, BDNF and NCX1). Species are symbol-coded by genera and colour-coded by subclades as in the mitochondrial phylogeny (Fig. 1). Photos: E. maxiquadratus and T. pseudoƲerrucosus (credits: AH).
Figure 1 in Towards completing the crocodile newts' puzzle with all-inclusive phylogeographic resources
Figure 1. Time-calibrated phylogeny of crocodile newts built from 16.2 kb of mitochondrial sequences representative of the sampled genetic diversity of all known taxa. Major clades are distinguished by symbols (squares: Echinotriton; circles: Tylototriton) and colours to visualize their geographic distributions. Photos: E. maxiquadratus and T. pseudoƲerrucosus (credits: AH).
Figure 9 in Towards completing the crocodile newts' puzzle with all-inclusive phylogeographic resources
Figure 9. Appearance of Echinotriton (Echinotriton) raffaellii sp. nov. Top: live individual observed at the type locality (credits: AH); bottom: the holotype MVZ:Herp:232187 (credits: MVZ).
Figure 2 in Towards completing the crocodile newts' puzzle with all-inclusive phylogeographic resources
Figure 2. Phylogeography of crocodile newts part I: genus Echinotriton and subgenus Tylototriton. The phylogenetic position and geographic distribution of each lineage is detailed by coloured symbols on the tree and the corresponding maps. Type localities of described taxa are indicated by stars. For T. Ʋerrucosus, we highlighted the paraphyletic position of sequences attributed to T. shanjing, as well as its type locality with asterisks.
Figure 4 in Towards completing the crocodile newts' puzzle with all-inclusive phylogeographic resources
Figure 4. Evolution in isolation-by-distance in crocodile newts, as shown by ND2 sequence divergence vs. average geographic distances between analysed lineages.
Figure 3 in Towards completing the crocodile newts' puzzle with all-inclusive phylogeographic resources
Figure 3. Phylogeography of crocodile newts part II: subgenus Yaotriton. The phylogenetic position and geographic distribution of each lineage is detailed by coloured symbols on the tree and the corresponding maps. Type localities of described taxa are indicated by stars.
Figure 7 in Towards completing the crocodile newts' puzzle with all-inclusive phylogeographic resources
Figure 7. Simultaneous diversification (splitting events) through time in crocodile newts (blue bars) and the similarly surveyed South-East/East Asian tree frog genus Zhangixalus (green bars; Dufresnes et al., 2022), overlaid by Earth temperature (red curve). The latter is shown as the difference with the average temperature over the 1960–90 period, combining the datasets from Zachos et al. (2008), Hansen et al. (2013) and Lisiecki & Raymo (2005). In both amphibians, ancestral clades diverged in the Early Miocene and probably expanded throughout Asia during the Miocene climatic optimum; extant clades and species then appeared as the climate progressively cooled down and the South-East Asian monsoon strengthened in the Late Miocene onwards, and recently accelerated during the Pleistocene Quaternary glaciations. Photos: E. maxiquadratus (credit: AH) and Z. chenfui (credit: S. N. Litvinchuk).
Figure 8 in Towards completing the crocodile newts' puzzle with all-inclusive phylogeographic resources
Figure 8. Portrays of subgenera Sinotriton subgen. nov. and Echinotriton. Notice the shape of the vertebral ridge (segmented in Sinotriton vs. smooth in Echinotriton) and the fifth toe (normally developed in Sinotriton vs. rudimentary in Echinotriton). Photos: E. chinhaiensis, E. maxiquadratus (credits: AH); E. andersoni, E. raffaellii (credits: J. Nerz).
Crocodile skull
# **SHCMS:G.15525** **Crocodile** Age: approx 2-5 million years Length 11.4cm Width 13.4cm Depth 6.5cm Partial crocodile skull from the Siwalik Hills of northern India. Part of a collection of approximately 240 fossils from that location given to Ludlow Museum in 1845. The model was produced from a series of approx 150 images with a canon 5DS R using a stackshot rail and turntable. Then processed in agisoft photoscan at high levels. If you like this model or any others we produce we'd love to hear from you and how you've used them. Source: Objaverse 1.0 / Sketchfab
Data from: Conservation genetics of American crocodile, Crocodylus acutus, populations in Pacific Costa Rica
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Data from: Integrating molecular, phenotypic and environmental data to elucidate patterns of crocodile hybridization in Belize
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Effect of the Central American Isthmus on gene flow and divergence of the American crocodile Crocodylus acutus
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Data from: United by chewing: Hunter-Schreger band-like pattern and wavy enamel in a fossil crocodile suggest functional convergence with mammals and dinosaurs
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Data from: Phylogenomic analyses support the position of turtles as the sister group of birds and crocodiles (Archosauria)
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Data from: Life histories and conservation of long-lived reptiles, an illustration with the American Crocodile (Crocodylus acutus)
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American crocodile captures in South Florida
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Data from: Differences in distress: variance and production of American crocodile (Crocodylus acutus) distress calls in Belize
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Data from: Genetic evidence of hybridization between the critically endangered Cuban crocodile and the American crocodile: implications for population history and in situ/ex situ conservation
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Data from: Splitting an ancient icon: mummy DNA resurrects a cryptic Nile crocodile
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Data from: A time-calibrated species tree of Crocodylia reveals a recent radiation of the true crocodiles
True crocodiles (Crocodylus) are the most broadly distributed, ecologically diverse, and species-rich crocodylian genus, comprising about half of extant crocodylian diversity and exhibiting a circumtropical distribution. Crocodylus traditionally has been viewed as an ancient group of morphologically conserved species that originated in Africa prior to continental breakup. In this study, these long-held notions about the temporal and geographic origin of Crocodylus are tested using DNA sequence data of 10 loci from 76 individuals representing all 23 crocodylian species. I infer a time-calibrated species tree of all Crocodylia and estimate the spatial pattern of diversification within Crocodylus. For the first time, a fully resolved phylogenetic estimate of all Crocodylia is well-supported. The results overturn traditional views of the evolution of Crocodylus by demonstrating that the true crocodiles are not "living-fossils" that originated in Africa. Rather, Crocodylus originated from an ancestor in the tropics of the Late Miocene Indo-Pacific, and rapidly radiated and dispersed around the globe during a period marked by mass extinctions of fellow crocodylians. The findings also reveal more diversity within the genus than is recognized by current taxonomy.
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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.
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.