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397 results for “Echinoidea”
FIGURE 2. A in Arbacia ballenensis sp. nov. (Echinoidea, Arbacioida): A new species reveals diversification of the genus in Central America
FIGURE 2. A. ballenensis sp. nov. A–D, holotype CASG 103360; A, aboral view; B, oral view; C, lateral view; D, details (magnified) of ambulacrum and interambulacrum on the aboral side. Scale bar equals 10 mm.
A total-evidence dated phylogeny of Echinoidea combining phylogenomic and paleontological data
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Data from: Phylogenetic analysis of the Archaeocidaridae and Palaeozoic Miocidaridae (Echinodermata, Echinoidea) and the origin of crown group echinoids
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Data from: Empirical and theoretical study of Atelostomate (Echinoidea, Echinodermata) plate architecture: using graph analysis to reveal structural constraints
Describing patterns of connectivity among organs is essential for identifying anatomical homologies among taxa. It is also critical for revealing morphogenetic processes and the associated constraints that control the morphological diversification of clades. This is particularly relevant for studies of organisms with skeletons made of discrete elements such as arthropods, vertebrates, and echinoderms. Nonetheless, relatively few studies devoted to morphological disparity have considered connectivity patterns as a level of morphological organization or developed comparative frameworks with proper tools. Here, we analyze connectivity patterns among apical plates in Atelostomata, the most diversified clade among irregular echinoids. The clade comprises approximately 1600 fossil and Recent species (e.g., 25% of post-Paleozoic species of echinoids) and shows high levels of morphological disparity. Plate connectivity patterns were analyzed using tools and statistics of graph theory. To describe and explore the diversity of connectivity patterns among plates, we symbolized each pattern as a graph in which plates are coded as nodes that are connected pairwise by edges. We then generated a comparative framework as a morphospace of connections, in which the disparity of plate patterns observed in nature was mapped and analyzed. Main results show that apical plate patterns are both highly disparate between and within atelostomate groups and limited in number; overall, they also constitute small, compact, and simple structures compared to possible random patterns. Main traits of the evolution of apical plate patterns reveal the existence of strong morphogenetic constraints that are phylogenetically determined. In contrast, evolutionary radiations within atelostomates were accompanied by a clear increase in disparity, suggesting a release of some constraints at the origin of clades.
FIGURE 1. MNHN EcEh 1281 in A new species of Coelopleurus (Echinodermata: Echinoidea: Arbaciidae) from New Caledonia
FIGURE 1. MNHN EcEh 1281, holotype: A, aboral view; B, oral view; C, lateral view.
FIGURE 1. NHM 2007.4 in A new species of Lissocidaris (Echinodermata: Echinoidea: Cidaridae) from the Philippines: convergent evolution among smooth-spined cidaroids
FIGURE 1. NHM 2007.4, holotype: A, aboral view; B, oral view; C, lateral view.
FIGURE 49. Echinostrephus molaris A. Map showing distribution. B in Illustrated guide to the echinoid (Echinodermata: Echinoidea) fauna of South Africa
FIGURE 49. Echinostrephus molaris A. Map showing distribution. B. Live specimen (KwaZulu-Natal).
FIGURE 28. Diadema setosum A. Map showing distribution. B in Illustrated guide to the echinoid (Echinodermata: Echinoidea) fauna of South Africa
FIGURE 28. Diadema setosum A. Map showing distribution. B. Live juvenile specimen (KwaZulu-Natal).
FIGURE 27. Diadema savignyi A. Map showing distribution. B in Illustrated guide to the echinoid (Echinodermata: Echinoidea) fauna of South Africa
FIGURE 27. Diadema savignyi A. Map showing distribution. B. Live specimen (KwaZulu-Natal).
FIGURE 2 in Late Cretaceous species of Vologesia (Echinoidea, Cassiduloida) from northern Spain
FIGURE 2. Stratigraphy and lithology of the Langre section.
Figure 3. Apical plate structure. A and B in A new Late Eocene cassiduloid (Echinoidea) from Yorke Peninsula, South Australia
Figure 3. Apical plate structure. A and B, Rhynchopygus? janchrisorum sp. nov., Late Eocene holotype NMV P145616; C, R. marmini, Late Cretaceous USNM 19559 from Port Brechay, La Manche, France (drawing adapted from Kier, 1962). Scale bars 1mm.
Supplementary material 1 from: Filander Z, Samyn Y, Griffiths C (2019) Four notable additions to the South African echinoid fauna (Echinodermata, Echinoidea). ZooKeys 831: 71-80. https://doi.org/10.3897/zookeys.831.31381
: Data type: species data
Figure 1 from: Filander Z, Samyn Y, Griffiths C (2019) Four notable additions to the South African echinoid fauna (Echinodermata, Echinoidea). ZooKeys 831: 71-80. https://doi.org/10.3897/zookeys.831.31381
Figure 1 A–B (SAMC.A090123, off Mossel Bay): Histocidarispurpurata. A Aboral view of preserved specimen with partially removed spines B Oral view of preserved specimen with partially removed spines C–DEchinothrixdiademaC (RMCA.2561, Ispingo). Aboral view of partially denuded test D (RMCA.2568, Sodwana Bay). Oral view of preserved specimen with spines E–F (SAMC.A090124, Sowdana Bay): MicrocyphusrousseauiE Oral view of preserved specimen with spines F Aboral view of preserved specimen with spines G–H (SAMC.A090126, Park Rynie): PseudoboletiamaculataG Aboral view of preserved specimen with spines H Aboral view of preserved denuded test. Scale bars: 2 cm (A, B, G, H); 1 cm (C–F). All images were edited in GIMP 2.8.22 by Dr Carl Palmer and plate created by Zoleka Filander.
FIGURE 75 in Taxonomy and distribution of irregular echinoids (Echinoidea: Irregularia) from Sri Lanka
FIGURE 75. Distribution map of Nacospatangus altus recorded in this study.
FIGURE 73 in Taxonomy and distribution of irregular echinoids (Echinoidea: Irregularia) from Sri Lanka
FIGURE 73. Distribution map of Lovenia elongata recorded in this study.
FIGURE 43 in Taxonomy and distribution of irregular echinoids (Echinoidea: Irregularia) from Sri Lanka
FIGURE 43. Internal buttressing of Peronella lesueuri (WUSL/EI/35).
FIGURE 38 in Taxonomy and distribution of irregular echinoids (Echinoidea: Irregularia) from Sri Lanka
FIGURE 38. Distribution map of Jacksonaster sp. 1 recorded in this study.
FIGURE 45 in Taxonomy and distribution of irregular echinoids (Echinoidea: Irregularia) from Sri Lanka
FIGURE 45. Peronella oblonga (WUSL/EI/49): A, aboral view; B, oral view; C, lateral view.
FIGURE 34 in Taxonomy and distribution of irregular echinoids (Echinoidea: Irregularia) from Sri Lanka
FIGURE 34. Fibulariella angulipora (WUSL/EI/164): A, aboral view; B, oral view; C, lateral view.
FIGURE 35 in Taxonomy and distribution of irregular echinoids (Echinoidea: Irregularia) from Sri Lanka
FIGURE 35. Distribution map of Fibulariella angulipora recorded in this study.
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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.