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By Cecca F. (Ed.)

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Holotype. 18 - Spitidiscus cf. hugii ( O O S T E R ) , the unfigured specimen which offered the suture line, pi. 6, fig. 11. 19 - Spitidiscus gastaldianus ( D ' O R B I G N Y ) (= pi. 5, fig. 10). 20 - Spitidiscus cf. andrussowi ( K A R A K A S C H ) (= pi. 5, fig. 17). 21 - Astieridiscus cf. morleti (KlLIAN) (= pi. 5, fig. 23). All figures natural size, except figures 6, 7 a-b and 9. TAVOIA 7 Ornamentazione e sezione della spira di alcune specie di Holcodiscidae. Fig. 1 - Jeanthieuloyites keyserlingiformis A VRAM & GRADINARU, olotipo.

17 a-c - Holcodiscus simionescui n. , holotype: b, c = the fore-last whorl, with strengthened ribs at the mid-sides where they bifurcate. D. P A T R U L I U S & E. , IG P-18697. Fig. 18 a-b, 19 a-b - Holcodiscus gastaldii K I L I A N (non D ' O R B I G N Y ) : 18, V. , IG P-760; 19, D. P A T R U L I U S & E. , IG P-18696. All the specimens are figured in maturai size. TAVOLA 3 Fig. a-b, 3 a-b, 4, 5, 6, 7 - Holcodiscus cf. caillaudianus (D'ORBIGNY). 1, collezione D. POPESCU- RAILEANU, IG P2, 3, collezione E.

16 and 15, respectively; 9 enlarged x 2). 11 12 13 14 - Holcodiscus cf. caillaudianus ( D ' O R B I G N Y ) (= pi. 3, fig. 2). - Holcodiscus alpha T Z A N K O V (= pi. 3, fig. 15, vanished specimen). - Holcodiscus tzankovi n. , holotype. - Holcodiscus alpha T Z A N K O V (= pi. 3, fig. 14). 15 - Holcodiscus decorus n. , holotype. 16 - Holcodiscus aff. decorus n. sp. (= pi. 1). 17 - Holcodiscus ouachensis n. , holotype. 18 - Spitidiscus cf. hugii ( O O S T E R ) , the unfigured specimen which offered the suture line, pi.

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Proceedings of 3rd Workshop on Early Cretaceous Cephalopods by Cecca F. (Ed.)

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