Find research datasets worth reusing

Fig. 6 in Palaeobiology and evolutionary context of Angulithes mermeti, a streamlined early Late Cretaceous shallow-water nautiloid

Fig. 6. Shell form (A1–C1), external sutures (A2–C2), and whorl cross-section (D) of selected hercoglossid nautiloids. A. Nautilus mermeti (Coquand, 1862) from the Cenomanian of Ténoukla near Tébassa, northeast Algeria (after Coquand 1862: pl. 2: 1, 2). B. Nautilus munieri Choffat, 1886 from the upper Cenomanian of Villa Nova d'Ourem, Portugal (after Choffat 1886: pl. 2: 1). C. Angulithes triangularis Montfort, 1808 (MB.C.2052) from the lower Sardinero Formation, lower Middle Cenomanian of Langre, Cantabria, northern Spain (after Wilmsen 2000: pl. 1: 2b, pl. 5: 15). D. Nautilus triangularis Montfort, 1808 from the Cenomanian of Île de Madame, Charente-Maritime, France (after d'Orbigny 1840: pl. 12: 2).

Fig. 4 in Palaeobiology and evolutionary context of Angulithes mermeti, a streamlined early Late Cretaceous shallow-water nautiloid

Fig. 4. Hercoglossid nautiloid Angulithes mermeti (Coquand, 1862) from the Cenomanian of Wadi Ghonima, Egypt. A. AFK 202 in lateral (A1, A3) and ventral (A2) views. B. AFK 218 in lateral (B1) and apertural (B2) views; arrow shows the position of the siphuncle.

Fig. 3 in Palaeobiology and evolutionary context of Angulithes mermeti, a streamlined early Late Cretaceous shallow-water nautiloid

Fig. 3. Hercoglossid nautiloid Angulithes mermeti (Coquand, 1862), AFK 225 from the Cenomanian of Wadi Ghonima, Egypt, in apertural (A1) and lateral (A2) views.

Fig. 8 in Palaeobiology and evolutionary context of Angulithes mermeti, a streamlined early Late Cretaceous shallow-water nautiloid

Fig. 8. Westermann morphospace diagram, simplified and modified after Ritterbush et al. (2014), with placement of the hercoglossid nautiloid Angulithes mermeti (Coquand, 1862) (see Table 2 for raw data; black circle indicates mean value); for comparison, two specimens of Nautilus pompilius Linnaeus, 1758 are plotted in the diagram, too (1, specimen 17 of Tajika et al. 2015; 2, an early Pleistocene specimen from Wani et al. 2008).Abbreviations: Th, shell inflation; U, umbilical exposure; w, whorl expansion.

Fig. 5 in Palaeobiology and evolutionary context of Angulithes mermeti, a streamlined early Late Cretaceous shallow-water nautiloid

Fig. 5. Cross-sections and external sutures of the hercoglossid nautiloid Angulithes mermeti (Coquand, 1862) from the Cenomanian of Wadi Ghonima, Egypt. A. AFK 225, shell shape in apertural view (A1), external sutures (A2); grey shading indicates position of the umbilical saddle. B. AFK 202, shell shape in ventral view. C. AFK 218, whorl shape, showing the position of the siphuncle.

Fig. 10 in Palaeobiology and evolutionary context of Angulithes mermeti, a streamlined early Late Cretaceous shallow-water nautiloid

Fig. 10. Palaeoecology of the hercoglossid nautiloid Angulithes mermeti (Coquand, 1862). A. Reconstruction of A. mermeti (Coquand, 1862) in the lagoonal shallow-water environment of the Galala Formation (background after a subaqueous photograph in the property of MW from a lagoonal site in the present-day Red Sea near Hughhada taken in 1999, treated by greyscale-filtering in Photoshop CS2); rudist illustrations from Mitchell (2002). B. Bioclastic rudist (r) floatstone, the lagoonal host sediment in which A. mermeti has been found in the Wadi Ghonima section (thin-section photomicrograph of sample 080217-18). C. Close-up of Fig. 9B showing the bioclastic packstone matrix in detail, including numerous fragments of dasycladalean algae (gr).

Fig. 7 in Palaeobiology and evolutionary context of Angulithes mermeti, a streamlined early Late Cretaceous shallow-water nautiloid

Fig. 7. Palaeobiogeographical distribution of the hercoglossid nautiloid Angulithes mermeti (Coquand, 1862). Cenomanian palaeogeographical and plate tectonic situation modified after Barrier and Vrielynck (2008); nautiloid occurrences are indicated by asterisks (see text for literature sources). Abbreviations: APB, Anglo-Paris Basin; MEI, Mid-European Island,

opencc-by-4.0Sep 2019View details →

Fig. 2 in The endocranial anatomy of the stem turtle Naomichelys speciosa from the Early Cretaceous of North America

Fig. 2. Cranial endocast, nasal cavity, and inner ear (plus cavum acustico-jugulare, A1 and blood vessels) of helochelydrid turtle Naomichelys speciosa Hay, 1908 (FMNH PR273) from the Early Cretaceous (Aptian/ Albian) Trinity Group, Texas; in right lateral (A1), right posterolateral (A2), dorsal (A3), and ventral (A4) views. 1, lateral branch of the internal carotid artery; 2, anteromedial branch of the carotid artery; 3, cerebral artery; 4,?unnamed branch of the nervi vidiani.

opencc-by-4.0Sep 2019View details →

Fig. 3 in The endocranial anatomy of the stem turtle Naomichelys speciosa from the Early Cretaceous of North America

Fig. 3. Detail of the cranial endocast and blood vessels of helochelydrid turtle Naomichelys speciosa Hay, 1908 (FMNH PR273) in right lateroventral view. The image also includes the cavum acustico-jugulare, right inner ear, and cranial nerves V and VI. 1, lateral branch of the internal carotid artery; 2, anteromedial branch of the carotid artery; 3, cerebral artery; 4,?unnamed branch of the nervi vidiani. Not to scale.

Fig. 4 in A new freshwater basal eucryptodiran turtle from the Early Cretaceous of Spain

Fig. 4. Dorsal view of the eucryptodiran turtle Hoyasemys jimenezi gen. et sp. nov. (MCCM−LH 84) from the Early Cretaceous of Las Hoyas, Spain. Photograph (A) and explanatory drawing (B).

Fig. 5. Majority rule tree from the 87 in A new freshwater basal eucryptodiran turtle from the Early Cretaceous of Spain

Fig. 5. Majority rule tree from the 87 maximum parsimonious trees produced by the cladistic analysis of Hoyasemys jimenezi in the modified data set of Joyce (2007). Retention index (RI) = 0.863 and consistency index (CI) = 0.569. Values refer percentages under 100% obtained in the majority rule analysis. Branchs with percentage under 50% are collapsed. Letters refer to the nodes mentioned in the text.

Fig. 2 in A new freshwater basal eucryptodiran turtle from the Early Cretaceous of Spain

Fig. 2. Skull and cervical vertebrae of the eucryptodiran turtle Hoyasemys jimenezi gen. et sp. nov. (MCCM−LH 84) from the Early Cretaceous of Las Hoyas, Spain. Photograph (A) and explanatory drawing (B).

Fig. 3 in A nearly complete ornithocheirid pterosaur from the Aptian (Early Cretaceous) Crato Formation of NE Brazil

Fig. 3. New ornithocheirid pterosaur specimen (SMNK PAL 3854) from the Nova Olinda Formation, Crato Basin, Brazil. A. 5th cervical vertebrae. B. 6th and 7th cervical vertebrae. C. 8th and 9th cervical ribs. Photographs (A, B, C) and explanatory drawings (A, B, C). Black shading highlights gaps/foram1 1 1 2 2 2 ina with the bone and the collapsed neurocentral canal.

Fig. 2 in A nearly complete ornithocheirid pterosaur from the Aptian (Early Cretaceous) Crato Formation of NE Brazil

Fig. 2. New ornithocheirid pterosaur specimen (SMNK PAL 3854) from the Nova Olinda Formation, Crato Basin, Brazil. Photograph detailing the cervical, notarial thoracic and terminal caudal vertebrae.

Fig. 1 in A nearly complete ornithocheirid pterosaur from the Aptian (Early Cretaceous) Crato Formation of NE Brazil

Fig. 1. New ornithocheirid pterosaur specimen (SMNK PAL 3854) from the Nova Olinda Formation, Crato Basin, Brazil. Photograph (A) and corresponding line tracing (B).

Fig. 4 in A nearly complete ornithocheirid pterosaur from the Aptian (Early Cretaceous) Crato Formation of NE Brazil

Fig. 4. The foot and pedal function of the new ornithocheirid pterosaur from the Nova Olinda Formation, Crato Basin, Brazil. A. SMNK PAL 3854. Line tracing of the ankle region (A1) and reconstructions of the ornithocheiroid pes, based on the described specimen (A2). B. The azhdarchoid pes, based on SMNK PAL 3900. Both reconstructions are scaled to a common humeral length.

Fig. 1 in A new freshwater basal eucryptodiran turtle from the Early Cretaceous of Spain

Fig. 1. Geographical and geological location of the fossil site of Las Hoyas (Cuenca, Spain), in the Mesozoic context of the Iberian Ranges.

Fig. 3 in A new freshwater basal eucryptodiran turtle from the Early Cretaceous of Spain

Fig. 3. Ventral view of the eucryptodiran turtle Hoyasemys jimenezi gen. et sp. nov. (MCCM−LH 84) from the Early Cretaceous of Las Hoyas, Spain. Photograph (A) and explanatory drawing (B).

opencc-by-4.0Sep 2011View details →

Fig. 7 in The European Early Cretaceous cryptodiran turtle Chitracephalus dumonii and the diversity of a poorly known lineage of turtles

Fig. 7. Disarticulated carapace of cryptodiran turtle Chitracephalus dumonii Dollo, 1885, ICIPLR−1, from the Barremian–Aptian of Torremuña (La Rioja, Spain). A–E. Fragments of costal plates. F–L. Peripheral plates and fragments of these plates. All elements are represented in dorsal view (A1–L1), explanatory drawings in that view (A2–L2), and ventral view (A3–L3)