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FIG. 20 in New observations on Upper Devonian brachiopods from the Namur-Dinant Basin (Belgium)

FIG. 20. — Transverse serial sections of Monelasmina sp. A (IRScNB a12364), loc. BM-2002-5, Les Valisettes Formation. Numbers refer to distances in mm from the top of the ventral umbo. Scale bar: 5 mm.

FIG. 29 in New observations on Upper Devonian brachiopods from the Namur-Dinant Basin (Belgium)

FIG. 29. — Transverse serial sections of Cleiothyridina sp. A (IRScNB a12329), loc. BM-2002-6, Barvaux Formation. Numbers refer to distances in mm from the top of the ventral umbo. Scale bars: 5 mm.

FIG. 19 in New observations on Upper Devonian brachiopods from the Namur-Dinant Basin (Belgium)

FIG. 19. — Comparison between Monelasmina sp. A (loc. BM-2002-5, Les Valisettes Formation) and Monelasmina deshayesi (Rigaux, 1873) (according to Brice's (1981) measurements of specimens from Boulonnais). Scatter diagrams of shell width (W) to shell length (L), shell width to shell thickness (T); frequency diagrams of W/L and T/W. Dotted lines indicate the means.

FIG. 34 in New observations on Upper Devonian brachiopods from the Namur-Dinant Basin (Belgium)

FIG. 34. — Transverse serial sections of Neptunathyris buxi n. gen., n. sp., loc. JG-1995-5, Matagne Formation: A-H, IRScNB a12336; I-Q, IRScNB a12337. Numbers refer to distances in mm from the top of the ventral umbo. Scale bars: 5 mm.

FIG. 9 in New observations on Upper Devonian brachiopods from the Namur-Dinant Basin (Belgium)

FIG. 9. — Transverse serial sections of Devonoproductus sp. A (IRScNB a12393), loc. BM-2003-3, Les Valisettes Formation. Numbers refer to distances in mm from the top of the ventral umbo. Scale bars: 5 mm.

FIG. 15 in New observations on Upper Devonian brachiopods from the Namur-Dinant Basin (Belgium)

FIG. 15. — Transverse serial sections of Aulacella aggeris n. sp. (IRScNB a12357), loc. 6839b, Famenne Group ("Senzeille Formation"). Numbers refer to distances in mm from the top of the ventral umbo. Scale bars: 5 mm.

FIG. 14. — A-E in New observations on Upper Devonian brachiopods from the Namur-Dinant Basin (Belgium)

FIG. 14. — A-E, Aulacella sp., slightly deformed shell (IRScNB a12352), loc. BM-2003-10, Grands Breux Formation (Boussu-en- Fagne Member); F-Q, Aulacella aggeris n. sp., Famenne Group ("Senzeille Formation"); F-J, complete shell (holotype IRScNB a12353), loc. BM-2003-2; K, incomplete ventral valve (IRScNB a12354), loc. BM-2003-2; L, incomplete dorsal valve (IRScNB a12356), loc. Senzeille 6839b; M-Q, slightly deformed complete shell (IRScNB a12355), loc. Senzeille 6839b; A, F, M, ventral views; B, G, N, dorsal views; C, H, O, lateral views; D, I, P, posterior views; E, J, Q, anterior views; K, L, internal views. Scale bars: 5 mm.

FIG. 23 in New observations on Upper Devonian brachiopods from the Namur-Dinant Basin (Belgium)

FIG. 23. — Schizophoria cf. simpsoni Merriam, 1940, loc. BM-2003-2, Famenne Group ("Senzeille Formation"): A-E, complete shell (IRScNB a12367); F-J, complete shell (IRScNB a12368); A, F, ventral views; B, G, dorsal views; C, H, lateral views; D, I, posterior views; E, J, anterior views. Scale bars: 10 mm.

FIG. 6 in New observations on Upper Devonian brachiopods from the Namur-Dinant Basin (Belgium)

FIG. 6. —?Caucasiproductus sp., complete shell (IRScNB a12376), loc. BM-2003-12, Neuville Formation: A, ventral view; B, dorsal view; C, lateral view; D, posterior view. Scale bar: 10 mm.

FIG. 12 in Brachiopods, crustaceans, vertebrates, and charophytes from the Devonian Ly Hoa, Nam Can and Dong Tho formations of Central Vietnam

FIG. 12. — Petalichthyida indet., Ly Hoa Formation,?Lower Devonian, Ly Hoa, Quang Binh Province, Vietnam, anterior ventrolateral plate and associated proximal portion of the spinal plate (BT 207m). Abbreviations: AVL, anterior ventrolateral plate; Sp, spinal plate. Scale bar: 10 mm.

FIG. 19 in Brachiopods, crustaceans, vertebrates, and charophytes from the Devonian Ly Hoa, Nam Can and Dong Tho formations of Central Vietnam

FIG. 19. — Bothriolepis sp., lower part of the Dong Tho Formation, Givetian, Cau Rong, Minh Hoa District, Quang Binh Province, Vietnam, left posterior ventrolateral plate (BT 208a) in ventral (A) and lateral (B) views; A1, B1, photograph; B1, B2, camera lucida drawings. Abbreviations: oaMV, overlap area for the median ventral plate; oaAVL, overlap area for the anterior ventrolateral plate. Scale bars: 10 mm.

FIG. 9 in Brachiopods, crustaceans, vertebrates, and charophytes from the Devonian Ly Hoa, Nam Can and Dong Tho formations of Central Vietnam

FIG. 9. — Vukhuclepis lyhoaensis Janvier, Tong-Dzuy, Ta Hoa & Doan Nhat, 1997, Ly Hoa Formation,?Lower Devonian, Ly Hoa, Quang Binh Province, Vietnam, attempted reconstruction of the trunk shield in dorsal view.Abbreviations: ADL, anterior dorsolateral plate; AMD, anterior median dorsal plate; AVL, anterior ventrolateral plate; PDL, posterior dorsolateral plate; PL, posterolateral plate; PMD, posterior median dorsal plate. Scale bar: 10 mm.

FIG. 16 in Brachiopods, crustaceans, vertebrates, and charophytes from the Devonian Ly Hoa, Nam Can and Dong Tho formations of Central Vietnam

FIG. 16. — Arthropoda, Ly Hoa Formation,?Lower Devonian, Ly Hoa, Quang Binh Province, Vietnam: A, Phyllocarida gen. et sp. indet. (BT 207r); a, carapace fragment; b, possible abdominal segments; B, C, Sinocaris-like carapace; B, camera lucida drawing of BT 203q; C, camera lucida drawing of BT 203s (C1, part; C2, counterpart). Scale bars: 5 mm.

FIG. 5 in Brachiopods, crustaceans, vertebrates, and charophytes from the Devonian Ly Hoa, Nam Can and Dong Tho formations of Central Vietnam

FIG. 5. — Vukhuclepis lyhoaensis Janvier, Tong-Dzuy, Ta Hoa & Doan Nhat, 1997, Ly Hoa Formation,?Lower Devonian, Ly Hoa, Quang Binh Province, Vietnam: A, left anterior ventrolateral plate in ventral (A1), dorsal (A2) and lateral (A3) aspects (BT 207e), associated with a left anterior dorsolateral plate (ADL) (BT 207f); B, right anterior ventrolateral plate, impression of the external surface (BT 207g); C, right anterior ventrolateral plate, impression of the ventral surface (BT 207h). Scale bars: 5 mm.

FIG. 8 in Brachiopods, crustaceans, vertebrates, and charophytes from the Devonian Ly Hoa, Nam Can and Dong Tho formations of Central Vietnam

FIG. 8. — Vukhuclepis lyhoaensis Janvier, Tong-Dzuy, Ta Hoa & Doan Nhat, 1997, Ly Hoa Formation,?Lower Devonian, Ly Hoa, Quang Binh Province, Vietnam: A, posterior dorsolateral plate in ventral (A1) and dorsal (A2) views, with associated posterolateral plate (PL) (BT 207i and 207j, respectively); B, posterior median dorsal plates in ventral (B1) and dorsal (B2) views (BT 207k). Abbreviations: dep, depression separating the anterior and posterior median dorsal processes; dslg, posterior dorsal sensory-line groove on PDL plate; gr, groove bordering the anteroventral margin of the posterior median dorsal process; itcp, posterior internal transverse crest; mll, main lateral-line groove; pda, pdp, anterior and posterior median dorsal processes; pdr, posterior dorsal ridge plate; prmvp, posterior median ventral process and pit. Camera lucida drawing. Scale bar: 1 mm.

FIG. 15 in Brachiopods, crustaceans, vertebrates, and charophytes from the Devonian Ly Hoa, Nam Can and Dong Tho formations of Central Vietnam

FIG. 15. — Youngolepididae gen. et sp. indet., Ly Hoa Formation,?Lower Devonian,Ly Hoa, Quang Binh Province, Vietnam, isolated scales in external view: A, caudal scale (BT 207p); B, larger flank scale with large cosmine pores (BT 207q). Scale bars: 5 mm.

FIG. 4 in Brachiopods, crustaceans, vertebrates, and charophytes from the Devonian Ly Hoa, Nam Can and Dong Tho formations of Central Vietnam

FIG. 4. — Vukhuclepis lyhoaensis Janvier, Tong-Dzuy, Ta Hoa & Doan Nhat, 1997, Ly Hoa Formation,?Lower Devonian, Ly Hoa, Quang Binh Province, Vietnam: A, nuchal plate in dorsal (A1) and ventral (A2) views (BT 207b; Fig. 3A); B, possible paranuchal plate (basal bone lamella only; BT 207c; Fig. 3B). Camera lucida drawings.Abbreviations: ede, external opening of endolymphatic duct; oaL, overlap area for the lateral plate; oaNu, overlap area for the nuchal plate; oaPNu, overlap area for the paranuchal plate; oaPp, overlap area for the postpineal plate; obt, obtected posterior margin; poc, pits for the supraoccipital processes of the neurocranium; scom, supraoccipital cross-commissural groove. Scale bars: 1 mm.

FIG. 3 in Brachiopods, crustaceans, vertebrates, and charophytes from the Devonian Ly Hoa, Nam Can and Dong Tho formations of Central Vietnam

FIG. 3. — Vukhuclepis lyhoaensis Janvier, Tong-Dzuy, Ta Hoa & Doan Nhat, 1997, Ly Hoa Formation,?Lower Devonian, Ly Hoa, Quang Binh Province, Vietnam, plates of the head and thoracic armour: A, nuchal plate in dorsal (A1) and ventral (A2) views (BT 207b); B, possible paranuchal plate (basal bone lamella only, BT 207c); C, small anterior median dorsal plate (BT 207d). Scale bars: 1 mm.

FIG. 2 in Brachiopods, crustaceans, vertebrates, and charophytes from the Devonian Ly Hoa, Nam Can and Dong Tho formations of Central Vietnam

FIG. 2. —?Galeaspida gen. et sp. indet., Ly Hoa Formation,?Lower Devonian, Ly Hoa, Quang Binh Province, Vietnam, fragmentary head shield (BT 207a). Scale bar: 10 mm.

FIG. 11 in Brachiopods, crustaceans, vertebrates, and charophytes from the Devonian Ly Hoa, Nam Can and Dong Tho formations of Central Vietnam

FIG. 11. — Brachythoraci gen. et sp.indet., Ly Hoa Formation,?Lower Devonian, Ly Hoa, Quang Binh Province, Vietnam, elastomer cast of an incomplete plate of the trunk armour, in external view (BT 207m). Abbreviation: oa, overlap area. Scale bar: 5 mm.