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18 results for “Wuchiapingian”
Fig. 13 in Post-extinction brachiopod faunas from the Late Permian Wuchiapingian coal series of South China
Fig. 13. Niutoushania (A, B) and Edriosteges (C–G) from the 1st member of the Lungtan Formation of Daijiagou. A, B. Niutoushania chongqingensis Chen sp. nov., anteroventral (A1), posterior (A2), and dorsal (A3) views of holotype NMV P309641 (A). B. Fragment of a ventral external mold NMV P309642 showing regularly spaced costae and fine spine bases. C–G. Edriosteges poyangensis (Kayser, 1883), dorsal (C, D2, E, F), anterodorsal (D1), and ventral (G) views of four dorsal external molds NMV P309632 (C), NMV P309630 (D), NMV P309629 (E), NMV P309631 (F), and a ventral valve NMV P309633 (G).
Fig. 11 in Post-extinction brachiopod faunas from the Late Permian Wuchiapingian coal series of South China
Fig. 11. Ventral interior of Transennatia gratiosa (Waagen, 1884); based on a ventral internal mold NMV P309639.
Fig. 14 in Post-extinction brachiopod faunas from the Late Permian Wuchiapingian coal series of South China
Fig. 14. Cardinal process of Chengxianoproductus cf. changxingensis Liao and Meng, 1986 (based on specimen NMV P309640).
Fig. 12 in Post-extinction brachiopod faunas from the Late Permian Wuchiapingian coal series of South China
Fig. 12. Interiors of Niutoushania chongqingensis Chen sp. nov. (based on specimen NMV P309641); ventral valve (A) and dorsal valve (B).
Fig. 15 in Post-extinction brachiopod faunas from the Late Permian Wuchiapingian coal series of South China
Fig. 15. Ventral interior of Permophricodothyris grandis (Huang, 1933) showing well−developed muscle scars (based on specimen NMV P309621).
Fig. 9 in Post-extinction brachiopod faunas from the Late Permian Wuchiapingian coal series of South China
Fig. 9. Selected serial sections of the ventral umbo of Meekella beipeiensis Chen sp. nov. (based on specimen NMV P309627) showing closely situated, parallel dental plates. The numbers are distance from the ventral beak; the orientation of the sections is with ventral surfaces upward.
Fig. 10. A in Post-extinction brachiopod faunas from the Late Permian Wuchiapingian coal series of South China
Fig. 10. A. Meekella kueichowensis (Huang, 1933), dorsal (A1), ventral (A2), and lateral (A3) views of NMV P309622. B. Chengxianoproductus cf. changxingensis Liao and Meng, 1986, ventral (B1), posterior (B2), lateral (B3), and dorsal (B4) views of NMV P309640 (B); B5, enlargement of fine, densely arranged spine bases of B1. C, D. Spinomarginifera alpha Huang, 1932, lateral (C1), posterior (C2), ventral (C3), and dorsal (D) views of a complete specimen NMV P309643 and a dorsal external mold NMV P309644. E–H. Transennatia gratiosa (Waagen, 1884), ventral (E1, G, H1), anteroventral (E2, H2), posterior (E3, H3), lateral (E4, H4), and internal (F) views of a ventral internal mold NMV P309639 (E), and latex replica NMV P309638 (F) of the ventral internal mold (E –E), a ventral internal mold NMV P309636 (G) and a dorsal external mold NMV P309637 (H –H). A, E, F, G, from the 4th member of the Lungtan For1 4 1 4 mation of Daijiagou; B, from the 1st member of the Lungtan Formation of Daijiagou; C, D, H, from the 5th member of the Lungtan Formation of Daijiagou.
Fig. 6 in Post-extinction brachiopod faunas from the Late Permian Wuchiapingian coal series of South China
Fig. 6. Global stratigraphic distributions of the Lungtan brachiopod faunas. Permian chronostratigraphic framework follows International Union of Geological Sciences (2002). Conodont zones are after Mei et al. (1994) and Jin et al. (1998). The G/L mass extinction horizon corresponds to the biostratigraphic G/L boundary. The extinction interval is defined by the late Capitanian conodonts Jinogondolella granti Zone and the earliest Wuchiapingian Clarkina postbitteri Zone. Brachiopod genera include 1, Spinomarginifera; 2, Edriosteges; 3, Meekella; 4, Transennatia; 5, Perigeyerella; 6, Permophricodothyris; 7, Paraspiriferina; 8, Magniderbyia; 9, Niutoushania; 10, Chengxianoproductus; 11, Peltichia. Brachiopod species include 12, Edriosteges poyangensis; 13, Transennatia gratiosa; 14, Permophricodothyris grandis; 15, Magniderbyia sp. indet.; 16, Meekella pusilloplicata; 17, Me. kueichowensis; 18, Me. beipeiensis; 19, Spinomarginifera lopingensis; 20, Niutoushania chongqingensis; 21, Chengxianoproductus cf. changxingensis; 22, Paraspiriferina sp.; 23, Perigeyerella costellata; 24, Peltichia zigzag; 25, Spinomarginifera alpha.
Fig. 8 in Post-extinction brachiopod faunas from the Late Permian Wuchiapingian coal series of South China
Fig. 8. Reconstruction of ventral interior of Perigeyella costellata Wang, 1955 (based on specimen NMV P309620).
Fig. 5 in Post-extinction brachiopod faunas from the Late Permian Wuchiapingian coal series of South China
Fig. 5. Abundance of the Edriosteges poyangensis–Spinomarginifera lopingensis Association. A total of 51 specimens were collected from a shell bed at the basal Lungtan Formation.
Fig. 3 in Post-extinction brachiopod faunas from the Late Permian Wuchiapingian coal series of South China
Fig. 3. Correlations of the described faunas with previously published brachiopod assemblages from South China. The dashed lines indicate that the zonal boundaries are not well defined.
Fig. 2 in Post-extinction brachiopod faunas from the Late Permian Wuchiapingian coal series of South China
Fig. 2. Composite stratigraphy of the Lungtan Formation at the Daijiagou and Chuanmu sections, showing lithology, microfacies and fossil horizons. A. Daijiagou section. B. Chuanmu section. Lithology: 1, coarse sandstone; 2, alternating mudstone and sandstone; 3, siltstone; 4, fine sandstone; 5, clay; 6, coal seam; 7, cherty limestone; 8, bioclastic limestone; 9, limestone. Microfacies: 1, low−angle cross bedding; 2, wavy bedding; 3, bimodal cross bedding; 4, brackish water ironstone concretions; 5, black shale; 6, coal seam; 7, sandy mudstone; 8, siltstone; 9, quartz sandstone; 10, alternating siliceous shale and cherty limestone; 11, sparite; 12, grainstone−packstone; 13, roots (coal seats); 14, weathered clay; 15, cherty limestone.
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. 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.
Supplemental text for: Wuchiapingian (Lopingian, Late Permian) brachiopod fauna from Guangdong Province, southeastern China: systematics and contribution to the Lopingian recovery
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Data from: A new species of burnetiid (Therapsida, Burnetiamorpha) from the early Wuchiapingian of South Africa and implications for the evolutionary ecology of the family Burnetiidae.
Burnetiidae is a family of basal therapsids that is known from late Permian-aged (Lopingian) sequences from southern and eastern Africa and European Russia. Recent discoveries of related genera within the broader clade Burnetiamorpha have added to our understanding of morphological variation in the group but have eroded the list of characters defining the family Burnetiidae. We describe a new burnetiid taxon, Leucocephalus wewersi gen. et sp. nov., and argue that Burnetiidae can be defined by, among other characters, the presence of two bosses on the ventrolateral surface of suborbital bar and zygomatic arch, high skull angulation between the orbits, and a median frontal crest that becomes wider and lower posteriorly. The new specimen was found in the early Wuchiapingian Tropidostoma Assemblage Zone of the Main Karoo Basin and, along with previous discoveries, indicates that the family reached its greatest diversity and abundance in the early Wuchiapingian. Diversity declined into the later Wuchiapingian and Changhsingian. Although the clade Burnetiamorpha, including the family Burnetiidae, contains at least 11 genera, each of these is exceptionally rare, with most represented by only one specimen. This could be attributed to a genuine ecological characteristic or may be the result of biogeographic factors, particularly if the Main Karoo Basin was on the periphery of their range.
Data from: A new species of burnetiid (Therapsida, Burnetiamorpha) from the early Wuchiapingian of South Africa and implications for the evolutionary ecology of the family Burnetiidae.
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