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688 results for “ammonoid”
Fig. 5 in Differential preservation of the Upper Cretaceous ammonoid Anagaudryceras limatum with corrugated shell in central Hokkaido, Japan
Fig. 5. Bending force on corrugated and flat materials. A. Bending force concentrates on tops and bottoms of corrugations, resulting in fracturing easier than flat material. B. Bending force uniformly acts on flat material.
Fig. 3 in Differential preservation of the Upper Cretaceous ammonoid Anagaudryceras limatum with corrugated shell in central Hokkaido, Japan
Fig. 3. Categories of shell fragmentation patterns. A. Intact, NSM PM 17534. B. Phragmocones with distorted body chamber, with radial edges almost straight or paralleling growth lines, and located just adoral of last septum, NSM PM 17535. Note body chamber part retaining their original morphology. C. Phragmocones lacking body chambers, with edges almost straight or parallel to growth lines, and located just adoral of last septum, NSM PM 17536. D. Isolated body chamber parts, NSM PM 17537, lateral (D1 and D3) and ventral (D2) views. Note lower jaw (arrow) preserved near separated body chamber. All specimens belong to late Turonian (Late Cretaceous) lytoceratid ammonoid Anagaudryceras limatum (Yabe, 1903) from the Oyubari area in the central Hokkaido, Japan. Specimen B is from locality NSM PCL 4−24−1, and all the others are from NSM PCL 4−24−2. Triangles indicate position of last septum.
Fig. 1 in Differential preservation of the Upper Cretaceous ammonoid Anagaudryceras limatum with corrugated shell in central Hokkaido, Japan
Fig. 1. Geological map of Cretaceous–Paleogene strata around Shuparo Lake in Oyubari area, central Hokkaido, Japan. Modified from Takashima et al. (2004).
Linked collectors and determiners for: The early gephuroceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea).
Natural history specimen data linked to collectors and determiners held within, "The early gephuroceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/5cb7c978-e62d-4576-b32d-2469745af89a">https://bionomia.net/dataset/5cb7c978-e62d-4576-b32d-2469745af89a</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/5cb7c978-e62d-4576-b32d-2469745af89a">https://gbif.org/dataset/5cb7c978-e62d-4576-b32d-2469745af89a</a>. Formatted as a Frictionless Data package.
Fig. 43 in The pharciceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)
Fig. 43. Synpharciceras clavilobum (Sandberger & Sandberger, 1850), holotype 42 (Wiesbaden Museum) from Oberscheld, photograph and reproduction of the figure in Sandberger & Sandberger (1850–1856: pl. 8 figs 3, 3a). Scale bar units = 1 mm.
Fig. 52 in The pharciceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)
Fig. 52. Sandbergeroceras tuberculosocostatum (Sandberger & Sandberger, 1850), reproductions of illustrations in Drevermann (1903). Scale bar units = 1 mm.
Fig. 50. A in The pharciceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)
Fig. 50. A. Sandbergeroceras archiaci sp. nov., holotype MB.C.3671 (Koch Coll.) from Oberscheld (Anna Mine). B. Sandbergeroceras costatum (d'Archiac & de Verneuil, 1842), neotype MB.C.7695 (Erbreich Coll.) from Dillenburg. C. Sandbergeroceras tuberculosocostatum (Sandberger & Sandberger, 1850), specimen SMF.Mbg.6360 from Oberscheld. Scale bar units = 1 mm.
Fig. 42 in The pharciceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)
Fig. 42. Stenopharciceras lotzi sp. nov. A. Suture line of holotype MB.C.30254 (Lotz 1901 Coll.) from Oberscheld (Prinzkessel Mine), at dm = 22.2 mm, ww = 9.9 mm, wh = 10.6 mm. B. Suture line of paratype MB.C.30256 (Lotz 1901 Coll.) from Oberscheld (Prinzkessel Mine), at dm = 22.8 mm, ww = 10.1 mm, wh = 11.2 mm.C. Suture line of paratype MB.C.2280 from Oberscheld, at ww = 12.6 mm, wh = 14.7 mm. D. Suture line of paratype MB.C.30255 (Lotz 1901 Coll.) from Oberscheld (Königszug Mine), at dm = 35.0 mm, ww = 13.5 mm, wh = 19.5 mm. E–H. Ontogeneric trajectories of the cardinal conch parameters. Abbreviations: see Material and methods. Scale bar units = 1 mm.
Fig. 37 in The pharciceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)
Fig. 37. Lunupharciceras lunulicosta (Sandberger & Sandberger, 1850). A. Cross section of specimen MB.C.22121 from Oberscheld. B. Suture line of specimen MB.C.3642 (Kegel 1927 Coll.) from Oberscheld (Sahlgrund Mine), at dm = 35.0 mm, ww = 10.5 mm, wh = 14.5 mm.C. Suture line of specimen MB.C.3648 (Kegel 1927 Coll.) from Oberscheld (Sahlgrund Mine), at dm = 42.0 mm, ww = 12.5 mm, wh = 16.5 mm. D–G. Ontogeneric trajectories of the cardinal conch parameters. Abbreviations: see Material and methods. Scale bar units = 1 mm.
Fig. 36 in The pharciceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)
Fig. 36. Lunupharciceras lunulicosta (Sandberger & Sandberger, 1850). A. Specimen MB.C.3642 (Kegel 1927 Coll.) from Oberscheld (Sahlgrund Mine). B. Specimen MB.C.3648 (Kegel 1927 Coll.) from Oberscheld (Sahlgrund Mine). C. Specimen MB.C.22171 (Kauth Coll.) from Oberscheld. D. Specimen MB.C.3666 (Kegel 1927 Coll.) from Oberscheld (Sahlgrund Mine). E. Specimen MB.C.3667 (Kegel 1927 Coll.) from Oberscheld (Sahlgrund Mine). Scale bar units = 1 mm.
Fig. 34 in The pharciceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)
Fig. 34. Extropharciceras becheri (von Buch, 1832). A. Reproduction of the specimens illustrated by Frech (1888: pl. 2 fig. 4). B. Reproduction of the specimen illustrated by Beyrich (1837a: pl. 1 fig. 7). Scale bar units = 1 mm.
Fig. 29 in The pharciceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)
Fig. 29. Evopharciceras formosum gen. et sp. nov. A. Suture line of holotype MB.C.30241 (Lotz 1901– 1902 Coll.) from Oberscheld (Beilstein Mine), at ww = 14.8 mm, wh = 14.2 mm. B–E. Ontogeneric trajectories of the cardinal conch parameters. Abbreviations: see Material and methods. Scale bar units = 1 mm.
Fig. 28 in The pharciceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)
Fig. 28. Evopharciceras formosum gen. et sp. nov. A. Holotype MB.C.30241 (Lotz 1901–1902 Coll.) from Oberscheld (Beilstein Mine). B. Paratype MB.C.22173 (Koch Coll.) from Oberscheld (Anna Mine). Scale bar units = 1 mm.
Fig. 24 in The pharciceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)
Fig. 24. Pharciceras ferrum sp. nov. A. Suture line of paratype MB.C.3646 (Euel 1902 Coll.) from Oberscheld (Stillingseisenzug Mine), at dm = 24 mm, ww = 12.0 mm, wh = 8.5 mm. B–E. Ontogeneric trajectories of the cardinal conch parameters. Abbreviations: see Material and methods. Scale bar units = 1 mm.
Fig. 31 in The pharciceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)
Fig. 31. Extropharciceras metallicum sp. nov. A. Suture line of paratype MB.C.30242 from Oberscheld, at dm = 34.5 mm, wh = 8.5 mm. B–E. Ontogeneric trajectories of the cardinal conch parameters. Scale bar units = 1 mm.
Fig. 23 in The pharciceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)
Fig. 23. Pharciceras ferrum sp. nov. A. Holotype MB.C.30238 from Oberscheld (Friedrich Mine). B. Paratype MB.C.3619 (Ahlburg Coll.) from Oberscheld (Königszug Mine). C. Paratype MB.C.22165 (Lotz Coll.) from Oberscheld. D. Paratype MB.C.30239 (Lotz 1902 Coll.) from Oberscheld (Königszug Mine). E. Paratype MB.C.3646 (Euel 1902 Coll.) from Oberscheld (Stillingseisenzug Mine). Scale bar units = 1 mm.
Fig. 22 in The pharciceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)
Fig. 22. Pharciceras kruegeri sp. nov. A. Suture line of paratype MB.C.3654 (Etzold 1910 Coll.) from Oberscheld ('Tiefe Grube'), at dm = 20 mm, ww = 15.5 mm, wh = 6.5 mm. B–E. Ontogeneric trajectories of the cardinal conch parameters. Abbreviations: see Material and methods. Scale bar units = 1 mm.
Fig. 41 in The pharciceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)
Fig. 41. Stenopharciceras lotzi sp. nov. A. Paratype MB.C.2280 from Oberscheld. B. Paratype MB.C.30255 (Lotz 1902 Coll.) from Oberscheld (Königszug Mine). C. Holotype MB.C.30254 (Lotz 1901 Coll.) from Oberscheld (Prinzkessel Mine). D. Paratype MB.C.30256 (Lotz 1902 Coll.) from Oberscheld (Anna Mine). Scale bar units = 1 mm.
Fig. 46 in The pharciceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)
Fig. 46. Pluripharciceras ahlburgi sp. nov. A. Paratype MB.C.493 (Lotz 1901 Coll.) from Oberscheld (Königszug Mine). B. Holotype MB.C.3644 (Ahlburg Coll.) from Oberscheld (Königszug Mine). C. Paratype MB.C.3639 from Oberscheld. D. Paratype MB.C.3640 (Ahlburg Coll.) from Oberscheld (Königszug Mine). E. Paratype MB.C.3659 (Ahlburg Coll.) from Oberscheld (Königszug Mine). F. Paratype MB.C.22155 (Jung 1902 Coll.) from Oberscheld. G. Paratype MB.C.3632 (Ahlburg Coll.) from Oberscheld (Königszug Mine). Scale bar units = 1 mm.
Fig. 21 in The pharciceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)
Fig. 21. Pharciceras kruegeri sp. nov., large paratype SMF.Mbg.6359 from Oberscheld. Scale bar units = 1 mm.
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