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26 results for “Lopingian”
Body size and geographic distribution of foraminiferal specimens during the Frasnian-Famennian (Frasnian), Guadalupian-Lopingian (Capitanian), Permian-Triassic (Changhsingian), Triassic-Jurassic (Rhaetian), and Cretaceous-Paleogene (Maastrichtian) mass extinctions.
<p>This dataset is about body size and geographic distribution of foraminiferal specimens during the Frasnian-Famennian (Frasnian), Guadalupian-Lopingian (Capitanian), Permian-Triassic (Changhsingian), Triassic-Jurassic (Rhaetian), and Cretaceous-Paleogene (Maastrichtian) mass extinctions.</p> <p>Foraminiferal body size data collection</p> <p>First, we collected published papers with foraminiferal images from the Frasnian (382.7-372.2 Ma), Capitanian (264.28-259.51 Ma), Changhsingian (254.14-251.902 Ma), Rhaetian (208.5-201.3 Ma), and Maastrichtian (72.1-66.1 Ma). Second, we measured two primary axes of specimens, such as maximum length and height in a conical or cylindrical shell. For some specimens, where there is no way to measure the length of both axes, we calculate the length of the unknown axis based on the aspect ratio of the type species. Third, we used the test volume as a standard indicator of body size, taking into account the diversity of foraminiferal morphology. Finally, the test volumes were calculated on a logarithmic scale with base 10 due to large individual differences, and the specific calculation is shown in Feng et al. (2020).</p>
Size variations in foraminifers from the Early Permian to the Late Triassic: implications for the Guadalupian-Lopingian and the Permian-Triassic mass extinctions
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A new Changhsingian (Lopingian) brachiopod fauna of the shallow-water clastic-shelf facies from Fujian Province, southeastern China
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Figure 2 in The youngest occurrence of embolomeres (Tetrapoda: Anthracosauria) from the Sunjiagou Formation (Lopingian, Permian) of North China
Figure 2. The holotype of Seroherpeton yangquanensis: photo (a) and line drawing (b) in lateral view; photo (c) and line drawing (d) in medial view. Scale bar equals 50 mm. Abbreviations: art. mx. j: articulation of maxilla for the processeus alaris of the jugal; art. pt. j: articulation of pterygoid for the processeus alaris of the jugal; ds. fl. pt: descending flange of pterygoid; ect: ectopterygoid; for. q: quadrate foramen; gr: groove on pterygoid; mx: maxilla; n. for.: nerve foramen; pt: pterygoid; q: quadrate; shf. pt: shaft on pterygoid; shg. pt: denticle shagreen on pterygoid; tor. tr: torus transiliens.
Figure 1 in The youngest occurrence of embolomeres (Tetrapoda: Anthracosauria) from the Sunjiagou Formation (Lopingian, Permian) of North China
Figure 1. Locality and horizon of Seroherpeton yangquanensis. The red star marks the locality of the holotype, near the border of Yangquan city and Shouyang County. The arrow at the bottom of the Sunjiagou Formation points to the horizon of the holotype. The map of China was modified from wikipedia.org.
Fig. 2 in Permomerope natalensis sp. n. from the Lopingian of South Africa, and a redescription of the type species of Permomerope (Trichoptera: Protomeropidae)
Fig. 2. Permomerope natalensis sp. n., holotype NMSA 2568a (counterpart), details of the wing venation and general appearance of the fossil. Scale bar = 1 mm.
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