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229 results for “Late Permian”
The emblematic South African therocephalian Euchambersia in China: a new link in the dispersal of late Permian vertebrates across Pangea
<p>Therapsids were widely distributed in Pangea in the late Permian. South Africa in Gondwana, and Russia in Laurasia are the principal areas recording tetrapods (including therapsids) of this age.<strong> </strong>More recent field explorations have increased the importance of Chinese late Permian fossil assemblages. This is clearly reflected in the discovery of several new therocephalians from the Naobaogou Formation in Nei Mongol. Here we report a therocephalian from that unit identified as a new species of the emblematic South African taxon <em>Euchambersia</em>. The new species, <em>E. liuyudongi</em>, is represented by a well-preserved skull and mandible showing a well-developed maxillary fossa and absence of postcanine teeth. This is the third akidnognathid recovered from the Naobaougou Formation, but oddly, the two basal Chinese akidnognathids previously known were recovered from a younger unit of the formation than the derived <em>E. liuyudongi</em>. This is the first time that the same therocephalian genus is recorded in northern and southern continents, making the record of the Naobaougou Formation key to understanding the evolution of late Permian continental faunas in general, and of akidnognathid therocephalians in particular.</p>
Supplemental text for: Wuchiapingian (Lopingian, Late Permian) brachiopod fauna from Guangdong Province, southeastern China: systematics and contribution to the Lopingian recovery
<p><span>A most diversified Wuchiapingian brachiopod fauna, which contains 57 species in 28 genera, is described from the Shuizhutang Formation at Liannan section, Guangdong province, southeastern China. Four new species are proposed. Among these 57 species, many of them have been fully described in recent papers and thus are only illustrated in the manuscript and described herein.</span></p>
Fig. 7 in On a new stereospondylomorph temnospondyl from the Middle-Late Permian of Southern Brazil
Fig. 7. Strict consensus tree resulting from the reduced analysis of Schoch's (2013) matrix.
Fig. 1 in Post-extinction brachiopod faunas from the Late Permian Wuchiapingian coal series of South China
Fig. 1. Generalized map showing the locations of the Daijiagou and Chuanmu sections.
Fig. 4 in Post-extinction brachiopod faunas from the Late Permian Wuchiapingian coal series of South China
Fig. 4. Reconstruction of the Edriosteges poyangensis–Spinomarginifera lopingensis Association.
The emblematic South African therocephalian Euchambersia in China: a new link in the dispersal of late Permian vertebrates across Pangea
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Supplemental text for: Wuchiapingian (Lopingian, Late Permian) brachiopod fauna from Guangdong Province, southeastern China: systematics and contribution to the Lopingian recovery
Open the record for dataset details and reuse information.
Size variations in foraminifers from the Early Permian to the Late Triassic: implications for the Guadalupian-Lopingian and the Permian-Triassic mass extinctions
<p>The final 10 Myr of the Paleozoic saw two of the biggest biologic crises in Earth history: the Middle Permian extinction (often termed the Guadalupian-Lopingian extinction, GLE) that was followed 7–8 Myr later by Earth's most catastrophic loss of diversity, the Permian-Triassic mass extinction (PTME). These crises are not only manifest as sharp decreases in biodiversity and - particularly for the PTME - total ecosystem collapse, but they also drove major changes in biological morphological characteristics such as the Lilliput effect. The evolution of test size among different clades of foraminifera during these two extinction events has been less studied. We analyzed a global database of foraminiferal test size (volume) including 20226 specimens in 464 genera, 98 families, and 9 suborders from 632 publications. Our analyses reveal significant reductions in foraminiferal mean test size across the Guadalupian-Lopingian boundary (GLB) and the Permian-Triassic boundary (PTB), from 8.89 to 7.60 log10 μm3 (lg μm3), and from 7.25 to 5.82 lg μm3, respectively. The decline in test size across the GLB is a function of preferential extinction of genera exhibiting gigantism such as fusulinoidean fusulinids. Other clades show little change in size across the GLB. In contrast, all Lopingian suborders in our analysis (Fusulinina, Lagenina, Miliolina, and Textulariina) experienced a significant decrease in test size across the PTB mainly due to size-biased extinction and within-lineage change. The PTME was clearly a major catastrophe that affected many groups simultaneously, and the GLE was more selective, perhaps hinting at a subtler, less extreme driver than the later PTME.</p>
Data from: Within- and among-genus components of size evolution during mass extinction, recovery, and background intervals: a case study of Late Permian through Late Triassic foraminifera
One of the best-recognized patterns in the evolution of organismal size is the tendency for mean and maximum size within a clade to decrease following a major extinction event and to increase during the subsequent recovery interval. Because larger organisms are typically thought to be at higher extinction risk than their smaller relatives, it has commonly been assumed that size reduction mostly reflects the selective extinction of larger species. However, to our knowledge the relative importance of within- and among-lineage processes in driving overall trends in body size has never been compared quantitatively. In this study, we use a global, specimen-level database of foraminifera to study size evolution from the Late Permian through Late Triassic. We explicitly decompose size evolution into within- and among-genus components. We find that size reduction following the end- Permian mass extinction was driven more by size reduction within surviving species and genera than by the selective extinction of larger taxa. Similarly, we find that increase in mean size across taxa during Early Triassic biotic recovery was a product primarily of size increase within survivors and the extinction of unusually small taxa, rather than the origination of new, larger taxa. During background intervals we find no strong or consistent tendency for extinction, origination, or within- lineage change to move the overall size distribution toward larger or smaller sizes. Thus, size stasis during background intervals appears to result from small and inconsistent effects of within- and among-lineage processes rather than from large but offsetting effects of within- and among-taxon components. These observations are compatible with existing data for other taxa and extinction events, implying that mass extinctions do not influence size evolution by simply selecting against larger organisms. Instead, they appear to create conditions favorable to smaller organisms.
Data from: A Changhsingian (late Permian) nautiloid assemblage from Gujiao, South China.
A c. 0.30 m thick cherty limestone bed in the Dalong Formation at Gujiao (Guizhou) yielded a highly diverse Changhsingian nautiloid assemblage. Its age is late Changhsingian, indicated by the co-occurring ammonoid Pseudotirolites sp. This assemblage is composed of nine species and five taxa in open nomenclature in nine genera, including one new genus and three new species: Neotainoceras zhaoi sp. nov., Nodopleuroceras gujiaoense sp. nov. and Gujiaonautilus longliensis gen. nov., sp. nov. Sholakoceras is for the first time recorded in South China. Compared with literature data from 52 sites in various regions worldwide, the material described here presents the most diverse Changhsingian nautiloid assemblage. Among the genera of the Gujiao assemblage, Pleuronautilus, Tainoceras and Liroceras are cosmopolitan, while the others are more endemic or genera known so far only from South China .
FIGURE 6 in Enigmatic Late Permian cockroaches from Isady, Russia (Blattida: Mutoviidae fam. n.)
FIGURE 6. Forewings of Mutovia intercalaria sp.n. A, PIN 3840/56; B, PIN 3840/532; C, PIN 3840/53; D, PIN 3840/518; E, PIN 3840/54; F, PIN 3840/516; G, PIN 3840/356; H, PIN 3840/511; I, PIN 3840/500; J, PIN 3840/358. Scales = 10 mm.
FIGURE 3 in Enigmatic Late Permian cockroaches from Isady, Russia (Blattida: Mutoviidae fam. n.)
FIGURE 3. Forewings of Mutovia intercalaria sp.n. A, PIN 3840/56 (reverse, 16 mm); B, PIN 3840/358 (reverse, 16 mm). C Hind wing tentatively attributed into male of Mutovia intercalaria PIN 3840/529=533 (length 17.5mm) Scales = 1 mm.
FIGURE 2 in Enigmatic Late Permian cockroaches from Isady, Russia (Blattida: Mutoviidae fam. n.)
FIGURE 2. Forewings of Mutovia intercalaria sp.n. A, PIN 3840/52 (reverse, 19mm); B, PIN 3840/53 (reverse, 19 mm); C, holotype PIN 3840/57 (reverse, length 16 mm; pale area is due to damage); Scale = 1 mm.
FIGURE 5 in Enigmatic Late Permian cockroaches from Isady, Russia (Blattida: Mutoviidae fam. n.)
FIGURE 5. Forewings of Mutovia intercalaria sp.n. A, holotype PIN 3840/57 (length 16mm); B, PIN 3840/52 (19mm); C Hind wing tentatively attributed into male of Mutovia intercalaria PIN 3840/529=533 (length 17.5mm); D, PIN 3840/8b, detail of venation; E, PIN 3840/66; F, PIN 3840/55 showing characteristic folding of posterior margin. Arrows show deformities. Scales = 1 mm.
FIGURE 4 in Enigmatic Late Permian cockroaches from Isady, Russia (Blattida: Mutoviidae fam. n.)
FIGURE 4. Explanatory drawing of forewings of Mutovia intercalaria sp.n. A, PIN 3840/518; B, PIN 3840/ 516; C, PIN 3840/520; D, PIN 3840/531; E, PIN 3840/356; F, PIN 3840/500; G, PIN 3840/501; H, PIN 3840/511; I, PIN 3840/532. Scales = 1 mm.
FIGURE 7 in Enigmatic Late Permian cockroaches from Isady, Russia (Blattida: Mutoviidae fam. n.)
FIGURE 7. Forewings of Mutovia intercalaria sp.n. A, PIN 3840/523; B, PIN 3840/519; C, PIN 3840/360; D, PIN 3840/525; E, PIN 3840/531; F, PIN 3840/435; G, PIN 3840/520; H, PIN 3840/521. Scales = 10 mm.
FIGURE 2 in A new permopsocidan genus and species from the Late Permian of Australia (Insecta: Acercaria: Psocidiidae)
FIGURE 2. Hypopsylla belmontensis, holotype In 45397/In 46044. A, photograph print under dry condition; B, photograph imprint under alcohol (copyright Natural History Museum, London). Scale bars represent 1 mm.
Paleomagnetism of the Middle and Late Permian rocks from eastern Tibet constrains the Late Paleozoic paleography and drift history of the North Qiangtang terrane
<p>The Qinghai-Tibet Plateau comprises a mosaic of geologically distinct Paleozoic and Mesozoic terranes that originated from the northern margin of Gondwana, splitting from it in the Carboniferous or Permian before subsequently drifting northward to collide with Laurasia in the Mesozoic. However, the paleography and drift history of these terranes remain poorly constrained. Here we present new Middle and Late Permian paleomagnetic data from the North Qiangtang Terrane, which allow us to determine that it drifted from ~24°S to ~9°S from the Middle to Late Permian. On the basis of paleomagnetic and geological data of the Tibetan terranes, we propose that the North Qiangtang Terrane was stably located at ~24°S during the Late Carboniferous and Middle Permian, likely affiliated with the Pamir-Qamdo continental archipelago, and the rapid northward drift of the North Qiangtang terrane starts in the Middle Permian.</p>
Figure 13 in The cranial morphology of the temnospondyl Australerpeton cosgriffi (Tetrapoda: Stereospondyli) from the Middle-Late Permian of Paraná Basin and the phylogenetic relationships of Rhinesuchidae
Figure 13. Tympanic cavities of Eryopiformes, including Stereospondyli (see characters 91, 201, 210 in Supporting information Appendix S2). A, Eryops megacephalus (AMNH 23529), dorsal view of the right otic notch. B, Platyoposaurus watsoni (PIN 161/39), posterolateral view of the right otic notch. C, Konzhukovia vetusta (PIN 520/1), dorsal view of the right otic notch. D, Australerpeton cosgriffi (UFRGS-PV-0230-P), posterolateral view of the left otic notch. E, Rhineceps nyasaensis (CAMZM T.259), posterolateral view of the right otic notch. F, Uranocentrodon senekalensis (TM 185), posterolateral view of the left otic notch. Scale bars: A–C, E, F = 3 cm; D = 1 cm. The arrows indicate the dorsal pterygoid crest (white), the stapedial groove (black), and the oblique crest (yellow).
Figure 6. Australerpeton cosgriffi Barberena, 1998 in The cranial morphology of the temnospondyl Australerpeton cosgriffi (Tetrapoda: Stereospondyli) from the Middle-Late Permian of Paraná Basin and the phylogenetic relationships of Rhinesuchidae
Figure 6. Australerpeton cosgriffi Barberena, 1998. Reconstruction of skull in ventral view. Dark grey areas represent openings or fenestrae. Light grey areas represent recessed areas of bone, areas of articulation (mandibular and occipital), and denticles on palate. Abbreviations: apv, anterior palatal vacuity; bo, basioccipital; cm, crista muscularis; co, choana; cp, cultriform process; ec, ectopterygoid; iv, interpterygoid vacuity; mx, maxilla; occ, occipital condyle; pl, palatine; pmx, premaxilla; ps, parasphenoid; pt, pterygoid; qd, quadrate; qj, quadratojugal; sf, subtemporal fenestra; tub, medial tubercle of the premaxilla; vo, vomer; vpj, ventral process of the jugal. Scale bar = 5 cm.
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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)
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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.