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Fig. 4 in Silicified Anisian (Middle Triassic) spiriferinid brachiopods from Guizhou, South China

Fig. 4. Spiriferinid brachiopod Pseudospiriferina pinguis Yang and Xu, 1966 from the bed Cy 3 of the Yangjuan−Chupiwa section, near Chupiwa village, Xinmin District, Panxian County, Guizhou, China. Complete shell GMPKU−P−6168, in ventral (A), dorsal (B), posterior (C), and lateral oblique (D) views. Scale bars 2 mm.

Fig. 2 in Silicified Anisian (Middle Triassic) spiriferinid brachiopods from Guizhou, South China

Fig. 2. Length vs. width diagram for 128 dorsal valves of Pseudospiriferina multicostata Yang and Xu, 1966 from the bed Cy 3 of the YangjuanChupiwa section, near Chupiwa village, Xinmin District, Panxian County, Guizhou, China.

Fig. 1 in Silicified Anisian (Middle Triassic) spiriferinid brachiopods from Guizhou, South China

Fig. 1. Lithologic sequence (A) and geographic position (B) of the Yangjuan−Chupiwa section, and relative abundance of species in spiriferinid interval (C); position of the silicified spiriferinid interval is arrowed. Partly after Sun et al. (2006), simplified. P., Pseudospiriferina; Ng., Neogondolella; Nc., Nicoraella.

Fig. 5 in Silicified Anisian (Middle Triassic) spiriferinid brachiopods from Guizhou, South China

Fig. 5. Length vs. width diagram for 17 specimens of Punctospirella fragilis (Schlotheim, 1814) from the bed Cy 3 of the Yangjuan−Chupiwa section, near Chupiwa village, Xinmin District, Panxian County, Guizhou, China.

Fig. 6 in Silicified Anisian (Middle Triassic) spiriferinid brachiopods from Guizhou, South China

Fig. 6. Spiriferinid brachiopod Punctospirella fragilis (Schlotheim, 1814) from the bed Cy 3 of the Yangjuan−Chupiwa section, near Chupiwa village, Xinmin District, Panxian County, Guizhou, China. A. Complete shell GMPKU−P−6164, in ventral (A1), dorsal (A2), lateral (A3), anterior (A4), and posterior (A5) views. B. Slightly damaged dorsal valve GMPKU−P−6169 in external (B1), internal (B2) views, and enlargement of cardinalia (B3). C. Dorsal valve GMPKU−P−6166 in external (C1), internal (C2) views, and enlargement of cardinalia (C3). D. Ventral valve GMPKU−P−6173, in ventral (D1) and internal views (D2). Scale bars 2 mm.

Fig. 6 in Latest Famennian brachiopods from Kowala, Holy Cross Mountains, Poland

Fig. 6. Transverse serial sections of Novaplatirostrum sauerlandense Sartenaer, 1997 through shell ZPAL Bp 57/40 from Kowala, set L. Numbers indicate distances in mm from ventral umbo.

Fig. 2 in Latest Famennian brachiopods from Kowala, Holy Cross Mountains, Poland

Fig. 2. Middle to Latest Famennian brachiopods from Kowala. A. Barroisella sp. The bivalved specimen ZPAL Bp 57/70a showing strongly exfoliated ventral valve (ventral internal mould) and interior of dorsal valve (lower right) (A1) and its counterpart ZPAL Bp 57/70b (A2); enlargement of the posterior region of the ventral valve showing pseudointerarea and elongated median muscle scar (A3). B–E. Aulacella interlineata (Sowerby, 1840). B–D. Three shells ZPAL Bp 57/4a, 4b, and 86, respectively, in dorsal (B1, C1, D1) and ventral (B2, C2, D2) views showing variability in the shell outline. E. Dorsal valve ZPAL Bp 57/5 exterior (E1) and interior (E2). F, H, I. Schellwienella pauli (Gallwitz, 1932). F. Slightly destroyed shell ZPAL Bp 57/20 in dorsal (F1), ventral (F2), lateral (F3), posterior (F4), and anterior (F5) views. H. Limestone block ZPAL Bp 57/103 with accumulation of shells of S. pauli. I. Interior of ventral valve ZPAL Bp 57/100. G. Productida indet., mould ZPAL Bp 57/7 of exfoliated dorsal valve. J. Productida indet. Posterior view of mostly decorticated and slightly crushed dorsal valve ZPAL Bp 57/8. K. Mesoplica sp. Ventral valve ZPAL Bp 57/1 in ventral (K1) and posterior (K2) views. Scale bars 5 mm.

Fig. 3 in Early Cambrian "soft-shelled" brachiopods as possible stem-group phoronids

Fig. 3. Schematic reconstruction of lingullotretid brachiopod Lingulosacculus nuda gen. et sp. nov. Abbreviation: ap, anterior projection.

Fig. 2 in Early Cambrian "soft-shelled" brachiopods as possible stem-group phoronids

Fig. 2. Anterior portion of lingullotretid brachiopod Lingulosacculus nuda gen. et sp. nov. (GSC−34952) in low−angle light, showing lophophore arms.

Fig. 1 in Early Cambrian "soft-shelled" brachiopods as possible stem-group phoronids

Fig. 1. Light micrographs (A1, B1) and camera lucida drawings (A2, B2) of lingullotretid brachiopod Lingulosacculus nuda gen. et sp. nov. A. GSC−34952, with the smaller oval−shaped dorsal valve superimposed on the larger coniform ventral valve. B. GSC−34953 (holotype), with the smaller dorsal valve largely obscured by the superimposed ventral valve; white arrows in B1 indicate the margins of the propareas on the ventral pseudointerarea.

Fig. 5 in Latest Famennian brachiopods from Kowala, Holy Cross Mountains, Poland

Fig. 5. Transverse serial sections of Pugnaria plana Biernat and Racki, 1986 through shells ZPAL Bp 31/107 (A) and ZPAL Bp 31/154 (B) from Kowala, sets J–K. Numbers indicate distances in mm from ventral umbo.

Fig. 4 in Latest Famennian brachiopods from Kowala, Holy Cross Mountains, Poland

Fig. 4. Transverse serial sections of Leptoterorhynchus magnus (Biernat and Racki, 1986) through shell ZPAL Bp 31/145 from Kowala, sets J–K. Numbers indicate distances in mm from ventral umbo.

Fig. 8 in Latest Famennian brachiopods from Kowala, Holy Cross Mountains, Poland

Fig. 8. Biometrical characteristics of Novaplatirostrum sauerlandense Sartenaer, 1997 from the type section (after Sartenaer 1997) and from Kowala. A. Comparison of the shell outline of representatives of the two collections on a width to length scatter diagram. B. Comparison of costation of the two collections.

Fig. 7 in Latest Famennian brachiopods from Kowala, Holy Cross Mountains, Poland

Fig. 7. Middle to Latest Famennian brachiopods from Kowala. A–D. Novaplatirostrum sauerlandense Sartenaer, 1997; four shells ZPAL Bp 57/106, 39, 38, and 105, respectively, in dorsal (A1, B1, C1, D1), ventral (A2, B2, C2, D2), lateral (A3, B3, C3, D3), posterior (A4, B4, C4, D4), and anterior (A5, B5, C5, D5) views. E. Hadyrhyncha sp.; shell ZPAL Bp 57/115 in dorsal (E1), ventral (E2), lateral (E3), posterior (E4), and anterior (E5) views. F, G. Centrorhynchus sp.; external imprints ZPAL Bp 57/61 and 62, respectively, of two strongly flattened ventral valves on a shale surface.

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Fig. 7 in Biotic interaction between spionid polychaetes and bouchardiid brachiopods: Paleoecological, taphonomic and evolutionary implications

Fig. 7. Fragments of Bouchardia rosea (Mawe, 1823) shells resulting from the breakage along the surface defined by polychaete tubes.

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Fig. 2 in Biotic interaction between spionid polychaetes and bouchardiid brachiopods: Paleoecological, taphonomic and evolutionary implications

Fig. 2. Schematic stratigraphic sections of the studied fossil localities in Bajo de San Julián, Argentina (A) and Cerro Bautista, Uruguay (B), showing the Bouchardia−beds.

Fig. 21 in Silicified Mississippian brachiopods from Muhua, southern China: Lingulids, craniids, strophomenids, productids, orthotetids, and orthids

Fig. 21. Orthotetoid brachiopod Schellwienella sp. from the Muhua Formation. A. Slightly incomplete ventral valve, PKUM02−0314, in exterior (A1), interior (A2), posterior (A3), lateral (A4), and anterodorsal (A5) views. B. Slightly damaged dorsal valve, PKUM02−0315, in exterior (B1), interior (B2), posterior (B3), and enlarged dorsal (B4) views. C. Incomplete dorsal valve, PKUM02−0316, in exterior (C1), interior (C2), and lateral (C3) views. D. Dorsal valve, PKUM02−0317, in exterior (D1), interior (D2), posterior (D3), and lateral (D4) views. Samples M2/4 (A), M2−8 (B), and MH2 (C, D).

Fig. 26 in Silicified Mississippian brachiopods from Muhua, southern China: Lingulids, craniids, strophomenids, productids, orthotetids, and orthids

Fig. 26. Dalmanelloid brachiopod Rhipidomella michelini (Léveillé, 1835) from the Muhua Formation. A, C, F. Dorsal valves, PKUM02−0338 (A), PKUM02−0339 (C), and PKUM02−0340 (F), in exterior (A1, C1, F1) and interior (A2, C2, F2) views. B. Ventral valve, PKUM02−0341, in interior view. D. Ventral valve, PKUM02−0342, in exterior (D1) and interior (D2) views. E. Dorsal valve, PKUM02−0343, in exterior view. G. Shell, PKUM02−0344, in ventral (G1) and posterior (G2) views. H. Dorsal valve, ZPAL V. 26/59, in exterior (H1), interior (H2), posterior (H3), and enlarged interior (H4) views with labelled morphology. Samples MH1 (A–G) and D1 (H).

Fig. 20 in Silicified Mississippian brachiopods from Muhua, southern China: Lingulids, craniids, strophomenids, productids, orthotetids, and orthids

Fig. 20. Orthotetoid brachiopod Brochocariina? sp. from the Muhua Formation. A. Incomplete ventral valve, PKUM02−0309, in exterior (A1), interior (A2), posterior (A3), lateral (A4), and enlarged interior (A5) views. B–D. Incomplete dorsal valves, PKUM02−0310 (B), PKUM02−0311 (C), and PKUM02−0312 (D), in exterior (B1, C1, D1) and interior (B2, C2, D2) views. E. Incomplete ventral valve, PKUM02−0313, in exterior (E1), interior (E2), lateral (E3), posterior (E4), and enlarged exterior (E5) views. Samples M2−8 (A, D) and GB (B, C, E). Scale bars 2 mm.

Fig. 17 in Silicified Mississippian brachiopods from Muhua, southern China: Lingulids, craniids, strophomenids, productids, orthotetids, and orthids

Fig. 17. Strophalosioid brachiopod Dasyalosia cf. panicula Brunton, 1966 from the Muhua Formation. A. Shell, PKUM02−0287, in dorsal (A1), ventral (A2), and lateral (A3) views. B. Incomplete dorsal valve, PKUM02−0288, in exterior (B1) and interior (B2) views. C. Incomplete ventral valve, PKUM02−0289, in exterior view. Sample GB.