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875 results for “Brachiopod”
Fig. 6 in Brachiopods from the uppermost Lower Ordovician of Peru and their palaeogeographical significance
Fig. 6. Orthid brachiopod Paralenorthis carlottoi Villas, sp. nov. A. MGM 5973X−1, latex cast of exterior of ventral valve, holotype. B. MGM 5977X, latex cast of exterior of ventral valve. C. MGM 5975X, latex cast of exterior of ventral valve. D. MGM 5973X−6, latex cast of exterior of dorsal valve. E. MGM 5981X−2–3, latex casts of exteriors of two dorsal valves. F. MGM 5978X−2, latex cast of exterior of dorsal valve. G. MGM 5981X−1, internal mould (G1) and latex cast of interior (G2) of dorsal valve. H. MGM 5973X−4, internal mould (H1) and latex cast of interior (H2) of dorsal valve. I. MGM 5973X−2, internal mould (I1) and latex cast of interior (I2) of ventral valve. J. MGM 5973X−5a, internal mould of dorsal valve. K. MGM 5974X, internal mould (K1) and latex cast of interior (K2) of dorsal valve. L. MGM 5980X, internal mould (L1) and latex cast of interior (L2) of ventral valve. M. MGM 5979X, internal mould (M1) and latex cast of interior (M2) of ventral valve. Scale bars 2 mm.
Fig. 1 in Brachiopods from the uppermost Lower Ordovician of Peru and their palaeogeographical significance
Fig. 1. Location of the studied fossiliferous localites A–L. A. Geological map of the Carcel Puncco Canyon, with the lithostratigraphic boundaries modified from Laubacher (1977) and Palacios et al. (1996, Masuco Quadrangle). B. Map of the main Lower Palaeozoic outcrops of southern South America (after Astini 1995).
Fig. 1 in The earliest known Kinnella, an orthide brachiopod from the Upper Ordovician of Manitoulin Island, Ontario, Canada
Fig. 1. Map of Manitoulin Island showing the localities of Kinnella laurentiana sp. nov. in the lower Kagawong Submember, upper Georgian Bay Formation. Dark shaded region corresponds to the outcrop belt of the Kagawong Submember.
Fig. 6 in The earliest known Kinnella, an orthide brachiopod from the Upper Ordovician of Manitoulin Island, Ontario, Canada
Fig. 6. Cluster analysis of Kinnella−bearing brachiopod faunas worldwide. Software: PAST (Hammer et al. 2001; Hammer and Harper 2005); algorithm: unweighted pair−group; Raup−Crick similarity coefficient. Refer to Appendix 1 for identification of assemblage localities, published sources and taxa employed in the analysis.
Fig. 5 in Brachiopods from the uppermost Lower Ordovician of Peru and their palaeogeographical significance
Fig. 5. Orthid brachiopod Paralenorthis immitatrix Havlíček and Branisa, 1980. A. MGM 5987X−2 internal mould (A1) and latex cast of interior (A2) of dorsal valve. B. MGM 5989X, internal mould (B1) and latex cast of interior (B2) of dorsal valve. C. MGM 5991X, internal mould of ventral valve. D. MGM 5988X, internal mould of ventral valve. E. MGM 5987X−1, internal mould (E1) and latex cast of interior (E2) of ventral valve. F. MGM 5992X, internal mould of ventral valve. G. MGM 5987X−2, latex cast of exterior of dorsal valve. H. MGM 5990X, latex cast of exterior of dorsal valve. I. MGM 5986X, internal mould of ventral valve. Scale bars 5 mm.
Fig. 3 in Brachiopods from the uppermost Lower Ordovician of Peru and their palaeogeographical significance
Fig. 3. Taffiid brachiopod Ahtiella sp. A. MGM 5965X, internal mould (A1) and latex cast of interior (A2) of dorsal valve. B. MGM 5966X, latex cast of exterior in ventral view (B1) and postero−ventral view (B2) of shell with conjoined valves. C–F. Plectambonitoidea gen. et sp. indet. C. MGM 5967X, internal mould (C1) and latex cast of exterior (C2) of ventral valve. D. MGM 5969X, latex cast of exterior in postero−ventral view (D1) and ventral view (D2) of shell with conjoined valves. E. MGM 5972X, latex cast of exterior in postero−ventral view (E1) and ventral view (E2) of shell with conjoined valves. F. MGM 5968X, latex cast of interior (F1) and internal mould (F2) of ventral valve. Scale bars 5 mm.
Fig. 8 in Brachiopods from the uppermost Lower Ordovician of Peru and their palaeogeographical significance
Fig. 8. Palaeogeographical reconstruction of the southern hemisphere for the Early−Mid Ordovician transition, based on Terra Mobilis (Scotese and Denham 1988), with the distribution of the studied brachiopod genera. Dark grey area indicates distribution of Ahtiella during Arenig times; light grey area indicates regions invaded by Ahtiella during Llanvirn times. Gondwana: AF, Africa; ANT, Antarctica; AR, Arabia; ARM, Armorica; AUS, Australia; AVAL, Proto−Avalonia; BALT, Baltica; BU−MA, Burma−Malaisia; CU, Cuyania (Precordillera); IB, Iberia; IN, India; KAZ, Kazakhstania; LAU, Laurentia; MN, Montagne Noire; PER, Perunica (Bohemia); S, Sardinia; SAM, South America (1, Peru; 2, Bolivia; 3, Eastern Cordillera Argentina; 4, Puna−Famatina); SCH, South China; SIB, Siberia; T, Turkey.
Fig. 4 in The earliest known Kinnella, an orthide brachiopod from the Upper Ordovician of Manitoulin Island, Ontario, Canada
Fig. 4. Plot of measurements of 50 conjoined shells of Kinnella laurentiana sp. nov.; Kagawong Submember, upper Georgian Bay Formation, Richmondian (mid−Ashgill), Manitoulin Island. Note the largely isometric shell outline (consistent length/width ratio) and convexity (thickness/width ratio) with ontogeny.
Fig. 5 in The earliest known Kinnella, an orthide brachiopod from the Upper Ordovician of Manitoulin Island, Ontario, Canada
Fig. 5. Orthide brachiopod Kinnella laurentiana sp. nov.; Kagawong Submember, upper Georgian Bay Formation, Richmondian (mid−Ashgill), Manitoulin Island. A. GSC 117903, paratype, various views of interior of ventral valve (A1) showing dental plates (A2) and large interarea (A3). B. GSC 117904, paratype, interior of ventral valve. C. GSC 117905, paratype, interior of ventral valve (C1) showing dental plates and muscle field (C2). D. GSC 117906, paratype, interior of dorsal valve (D1), with details of cardinalia and adductor muscle scars (D2 and D3). E. GSC 117907, paratype, interior of dorsal valve, with relatively strong median ridge. F. GSC 117908, paratype, interior of dorsal valve (F1), with crenulated, anteriorly swollen cardinal process (F2).
Fig. 13 in New Barremian rhynchonellide brachiopod genus from Serbia and the shell microstructure of Tetrarhynchiidae
Fig. 13. Correlation of shell microstructure and type of crura in the various superfamilies of post−Paleozoic Rhynchonellida (unpublished data of NM−D and Miguel Manceñido; published with permission).
Fig. 10 in New Barremian rhynchonellide brachiopod genus from Serbia and the shell microstructure of Tetrarhynchiidae
Fig. 10. Rhynchonellide brachiopod Antulanella pancici (Antula, 1903), Barremian, Crnoljevica, Svrljiške Planine Mountains, eastern Serbia. A. SEM micrographs of transverse sections of the shell RGF VR 24/61. A1. Rib of ventral valve, primary microgranular layer (pl), secondary layer. Silicified organic sheets crossing the section (arrow). A2. Sulcus of ventral valve, primary microgranular layer (pl) above, secondary layer with finer fibrous sublayer, overgrown by diagenetic calcite prisms (dcp). Subparallel silicified organic sheets crossing the shell (arrow). A3. Boundary between the primary microgranular layer and secondary fibrous layer, finer anisometric fibres in the outermost part of the shell, close to boundary; rib of a ventral valve. A4. Anisometric anvil−like fibres of the secondary layer in a sulcus. A5. "Diabolo" type sections of the crura. B. Distal splitting of the crura into parallel plates; better seen on the right crus, specimen RGF VR 25/484 (SEM micrograph taken from an acetate peel).
Fig. 8 in New Barremian rhynchonellide brachiopod genus from Serbia and the shell microstructure of Tetrarhynchiidae
Fig. 8. Transverse serial sections of Antulanella pancici (Antula, 1903) through specimen RGF VR 23/83, Barremian, Crnoljevica, Svrljiške Planine Mountains, eastern Serbia. Original dimensions of the specimen (in mm): L = 13.2, W = 12.7, T = 9.3. Numbers indicate distance in mm from the tip of the ventral umbo.
Fig. 7 in New Barremian rhynchonellide brachiopod genus from Serbia and the shell microstructure of Tetrarhynchiidae
Fig. 7. Transverse serial sections of Antulanella pancici (Antula, 1903) through specimen RGF VR 25/316, illustrated in Fig. 4E. Barremian, Crnoljevica, Svrljiške Planine Mountains, eastern Serbia. Original dimensions of the specimen (in mm): L = 12.7, W = 11.5, T = 10.8. Numbers indicate distance in mm from the tip of the ventral umbo.
Fig. 6 in New Barremian rhynchonellide brachiopod genus from Serbia and the shell microstructure of Tetrarhynchiidae
Fig. 6. Transverse serial sections of Antulanella pancici (Antula, 1903) through specimen RGF VR 25/313, illustrated in Fig. 4D. Barremian, Crnoljevica, Svrljiške Planine Mountains, eastern Serbia. Original dimensions of the specimen (in mm): L = 12.3, W = 12.6, T = 10.1. Numbers indicate distance in mm from the tip of the ventral umbo.
Fig. 5 in New Barremian rhynchonellide brachiopod genus from Serbia and the shell microstructure of Tetrarhynchiidae
Fig. 5. Transverse serial sections of Antulanella pancici (Antula, 1903) through specimen RGF VR 25/314, illustrated in Fig. 4C. Barremian, Crnoljevica, Svrljiške Planine Mountains, eastern Serbia. Original dimensions of the specimen (in mm): L = 12.3, W = 11.7, T = 10.4. Numbers indicate distance in mm from the tip of the ventral umbo.
Fig. 1 in New Barremian rhynchonellide brachiopod genus from Serbia and the shell microstructure of Tetrarhynchiidae
Fig. 1. Location map of the brachiopod locality (black star) in eastern Serbia, Carpatho−Balkanides.
Fig. 11 in New Barremian rhynchonellide brachiopod genus from Serbia and the shell microstructure of Tetrarhynchiidae
Fig. 11. Rhynchonellide brachiopod Antulanella pancici (Antula, 1903), Barremian, Crnoljevica, Svrljiške Planine Mountains, eastern Serbia. A. SEM micrographs of transverse sections of the shell RGF VR 25/310. A1. Section through two ribs, sulci and euseptoidum; preserved primary layer (pl) and secondary layer (sl) overgrown with diagenetic calcite prisms (dcp). A2. Section showing modified fibres of the euseptoidum. A3. Hinge plate (hp) and crural base (cb). B. SEM micrographs of transverse sections of the shell RGF VR 24/61. B1. Hinge plate (hp) and crural base (cb). B2. Right tooth (t), inner socket ridge (isr) and outer socket ridge (osr). B3. Close−up of fibres of hinge tooth from the area arrowed in B2 showing also slight diagenetic fusion of the fibrous elements.
Fig. 4 in New Barremian rhynchonellide brachiopod genus from Serbia and the shell microstructure of Tetrarhynchiidae
Fig. 4. Rhynchonellide brachiopod Antulanella pancici (Antula, 1903), Barremian (Early Cretaceous), Crnoljevica, Svrljiške Planine Mountains, eastern Serbia. A. RGF VR 25/288, topotype, dorsal (A1), ventral (A2), lateral (A3), and anterior (A4) views; A5, dorsal view shows interarea, deltidial plates and rimmed foramen. B. RGF VR 25/290, topotype, dorsal (B1, B5), ventral (B2, B6), lateral (B3, B7), and anterior (B4, B8) views. C. RGF VR 25/314, topotype, used for transverse serial sections, dorsal (C1), ventral (C2), lateral (C3), and anterior (C4) views. D. RGF VR 25/313, topotype, juvenile form, used for transverse serial sections, dorsal (D1), ventral (D2), lateral (D3), and anterior (D4) views. E. RGF VR 25/316, topotype, used for transverse serial sections, dorsal (E1), ventral (E2), lateral (E3), and anterior (E4) views. F. RGF VR 25/289, topotype, dorsal (F1), ventral (F2), lateral (F3), and anterior (F4) views. G. RGF VR 23/81, topotype, largest specimen, dorsal (G1), ventral (G2), lateral (G3), and anterior (G4) views.
Fig. 12 in New Barremian rhynchonellide brachiopod genus from Serbia and the shell microstructure of Tetrarhynchiidae
Fig. 12. Antula's (1903: pl. 2: 1–4) original drawings of four specimens of Antulanella pancici (Antula, 1903), from the Barremian, Crnoljevica, Svrljške Planine Mountains, eastern Serbia. A. Adult specimens, dorsal (A1), ventral (A2), lateral (A3), and anterior (A4) views. B. Fully adult specimen, dorsal (B1), ventral (B2), lateral (B3), and anterior (B4) views. C. Dorsal (C1) and ventral (C2) views. D. Dorsal (D1) and anterior (D2) views.
Fig. 3 in New Barremian rhynchonellide brachiopod genus from Serbia and the shell microstructure of Tetrarhynchiidae
Fig. 3. Rhynchonellide brachiopod Antulanella pancici (Antula, 1903), Barremian (Early Cretaceous), Crnoljevica, Svrljiške Planine Mountains, eastern Serbia. A. NHM 484/3, lectotype, dorsal (A1, A5), ventral (A2, A6), lateral (A3, A7), and anterior (A4, A8) views. B. NHM 484/8, paralectotype, dorsal (B1), ventral (B2), lateral (B3), and anterior (B4) views. C. NHM 484/9, paralectotype, dorsal (C1), ventral (C2), lateral (C3), and anterior (C4) views. D. NHM 484/6, paralectotype, dorsal (D1), ventral (D2), lateral (D3), and anterior (D4) views.
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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OpenNeuro
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