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Figure 4 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway

Figure 4. Geologic section of borings B-5, B-6, B-8, B-9, and B-10 at the Cabot site, Lonoke County, Arkansas, USA. Black shapes designate the approximate level at which otoliths were recovered (bgl m=below ground level in meters). The shape is indicative of the number of otoliths recovered at that level: circle=less than 10 specimens; triangle=11–100 specimens; rectangle=101–500 specimens; and star=greater than 500 specimens.

opencc-by-4.0Dec 2023View details →
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Figure 1 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway

Figure 1. Stratigraphy of the Arkadelphia Formation and other formations discussed in the text based primarily on McFarland (2004). The gray-shaded area represents an unconformity.

opencc-by-4.0Dec 2023View details →
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Figure 9 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway

Figure 9. Maastrichtian otolith localities in North America and otolith-based faunal communities (bioprovinces) based on Schwarzhans and Stringer (2020a). The Western Interior Seaway community is outlined in green, and the localities are shown in green circles. The Appalachian community is outlined in red, and the localities are shown in red circles. The number in the circle is the number of species known from the localities. The white star is the Arkadelphia Formation site at Cabot, Arkansas, and the focus of this study. The base paleogeographic map was modified from Blakey (2014) and Scotese (2014).

opencc-by-4.0Dec 2023View details →
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Figure 6 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway

Figure 6. Otoliths from the Cretaceous Arkadelphia Formation. All specimens unless otherwise noted are inner views of right sagittae. Length in mm. A. Kokenichthys navis Schwarzhans and Stringer (2020b), DMNH 2021-09-9, 4.10 mm. B. Clupeiform? indeterminate DMNH 2021-09-10, 1.42 mm. C. Arius subtilis Schwarzhans and Bratishko (2011), DMNH 2021-09-11, 4.61 mm. D. Vorhisia vulpes Frizzell (1965b), DMNH 2021-09-13, 2.49 mm. E. Vorhisia vulpes Frizzell (1965b), DMNH 2021-09-14, 3.06 mm. F. Vorhisia vulpes Frizzell (1965b), DMNH 2021-09-15, 3.99 mm. G. Vorhisia vulpes Frizzell (1965b), DMNH 2021-09-16, 7.98 mm. H. Vorhisia vulpes Frizzell (1965b), DMNH 2021-09-12, 19.36 mm.

opencc-by-4.0Dec 2023View details →
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Fig. 4 in The Jordan theropod (Maastrichtian, Montana, U.S.A.) referred to the genus Aublysodon

Fig. 4 - Comparison of The skulls of A, Aubtysodon; B, Coelopbysis (AMNB 7224); C, Dromaeosaurus (modified from Coibert & Russell, 1969, Fig. 1); D, Velociraptor (modified from Barsbold, 1982, Fig. la); E, Sauromitboides (modified from Barsbold, 1974, Pl. 1), V, Dromiceiomimus (modified from Russell, 1972, Fig. 5, and ROM 840); G, Caegnatbus (modified from Sternberg, 1949, Fig. 1, and Barsbold, 1982, Fig. c); H, Albeltosaurus libratus (modified from Gilmore, 1946, Pl. 4, Fig. 3); I, Daspletosaurus torosus (modified from Russell, 1970, Fig. 6); J, "Albertosaurus" lancensis (modified from Gilmore, 1946, Pl. 1); H, Tyrannosaurus (modified from Osborn, 1912, Fig. 1); L, lingual (top) and labial (bottom) views of the dentaries of "Cbirostenotes" (modified from Gilmore, 1924, Fig. 3). Scale bar represents 10 cm. Comparaison des cranes des divers théropodes: A, Aubtysodon; B, Coelopbysis (AMNB 7224); C, Dromaeosaurus (modifiés d'après Colbert & Russell 1969, Fig. 1); D, Velociraptor (modifié d'après Barsbold 1982, Fig. la); E, Sauromitboides (modifié d'après Barsbold 1974, Pl. 1); F, Dromiceiomimus (modifié d'après Russell 1972, Fig. 5 et ROM 840); C, Caenagnatbus (modifié d'après Sternberg 1949, Fig. 1 et Barsbold 1982, Fig. c); H, Albertosaurus libratus (modifié d'après Gilmore 1946, PI. 4, Fig. 3); I, Daspletosaurus torosus (modifié d'après Russell 1970, Fig. 6);J, "Albertosaurud' lancensis (modifié d'après Gilmore 1946, Pl. 1); K, Tyrannosaurus (modifié d'après Osborn 1912, Fig. 1); L, les vues linguale (en haut) et labiale (en bas) des dentaires du "Cbirostenotes" (modifié d'après Gilmore 1924, Fig. 3). Echelle = 10 cm.

opencc-by-4.0Dec 1989View details →
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Fig. 2 in The Jordan theropod (Maastrichtian, Montana, U.S.A.) referred to the genus Aublysodon

Fig. 2 - Cheek teeth of Aubtysodon mirandus. Left sixth maxillary tooth, as preserved, in lateral (A) and posterior (B) aspects. Right fourth dentary tooth, rendered in unworn condition, in anterior (C) and labial (D) aspects. Scale bar represents 10 mm. Les dents jugales de VAubtysodon mirandus. Sixième dent maxiliaire gauche telle qu'elle est conservée en vue laterale (A) et vue postérieure (B). Quatrième dent du dentaire droit, figurées sans usure en vue antérieure (C) et en vue labiale (D). Echelle: 10 mm.

opencc-by-4.0Dec 1989View details →
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FIGURE 12 in A Composite Section of Fossiliferous Late Cretaceous- Early Paleogene Localities in Senegal and Preliminary Description of a New Late Maastrichtian Vertebrate Fossil Assemblage

FIGURE 12. Pycnodus jonesae (SEN 056) from the Late Maastrichtian Cap de Naze Formation discovered at the North Quarry of Poponguine. Left prearticular in occlusal view. Scale = 1 cm.

opencc-by-4.0May 2024View details →
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FIGURE 11 in A Composite Section of Fossiliferous Late Cretaceous- Early Paleogene Localities in Senegal and Preliminary Description of a New Late Maastrichtian Vertebrate Fossil Assemblage

FIGURE 11. Maastrichtian invertebrates (internal molds formed in situ) of the Cap de Naze Formation discovered at the North Quarry of Poponguine. A, Turritellidae cf. Mesalia (SEN 060) natural cast in?abapertural view; and B, Naticidae indet. (SEN 071), natural cast in apical view. Scale = 1 cm.

opencc-by-4.0May 2024View details →
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FIGURE 8 in A Composite Section of Fossiliferous Late Cretaceous- Early Paleogene Localities in Senegal and Preliminary Description of a New Late Maastrichtian Vertebrate Fossil Assemblage

FIGURE 8. The Islet of Poponguine locality where the Thanetian beds of the Poponguine Formation crop out. A, Overview of locality showing units 2–5 (see text for lithology); B, detail of fine coquina limestone (unit 2) with small cross stratification; C, detail of thick coquina limestone (unit 4) with oblique stratifications dominated by lamellibranches; D, detail of thick coquina limestone (unit 5) with turritellids; and E, detail of limestone breccia (unit 6).

opencc-by-4.0May 2024View details →
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FIGURE 7 in A Composite Section of Fossiliferous Late Cretaceous- Early Paleogene Localities in Senegal and Preliminary Description of a New Late Maastrichtian Vertebrate Fossil Assemblage

FIGURE 7. Ndayane Cliff locality at Poponguine with the middle-late Danian Ndayane Formation cropping out. Buildings now cover the brachyanticline (upper right). The Maastricthian Cap de Naze Formation consisting of calcareous sandstone with hard ground underlies the Ndayane Formation unconformably. As seen in the center of the photograph, the beach of Poponguine obscures part of unit 1 of the Ndayane Formation. Unit 1 consists of calcareous sandstone with beds of marls and unit 2 of marls with calcite rosettes.

opencc-by-4.0May 2024View details →
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FIGURE 6 in A Composite Section of Fossiliferous Late Cretaceous- Early Paleogene Localities in Senegal and Preliminary Description of a New Late Maastrichtian Vertebrate Fossil Assemblage

FIGURE 6. Contact between the Danian Ndayane Formation and the overlying Thanetian Poponguine Formation in the North Quarry of Poponguine locality.

opencc-by-4.0May 2024View details →
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FIGURE 14 in A Composite Section of Fossiliferous Late Cretaceous- Early Paleogene Localities in Senegal and Preliminary Description of a New Late Maastrichtian Vertebrate Fossil Assemblage

FIGURE 14. Late Maastrichtian Testudines from the Upper Cap de Naze Formation of the North Quarry of Poponguine. A, Partial plastron in ventral view (SEN 054). Dotted lines mirrored to show extent of preservation. B, Peripheral carapace fragment in dorsal view (SEN 054). C, Partial neural bone in dorsal view (SEN 080). Abbreviations: ent, entoplastron; epi, epiplastron; hyo, hyoplastron. Scale = 2 cm.

opencc-by-4.0May 2024View details →
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FIGURE 3 in A Composite Section of Fossiliferous Late Cretaceous- Early Paleogene Localities in Senegal and Preliminary Description of a New Late Maastrichtian Vertebrate Fossil Assemblage

FIGURE 3. Composite stratigraphic section correlating four fossiliferous Late Cretaceous–Early Paleogene localities of Western Senegal. Units are unique to each locality (i.e., unit 2 of the Ndayane Formation at the North Quarry locality is not necessarily the same as unit 2 of the Ndayane Formation at the Ndayane Cliff at Poponguine locality). Abbreviations: Camp, Campanian; CdN., Cap de Naze; Dan, Danian; Fm, formation; fs, fine sand; ms, medium sand; L, late; M/L, Middle to Late; Maas, Masstrichtian; Mid, middle; mst, mudstone; Nda., Ndayane Formation; Popo., Poponguine; pst, packstone; u, unit; wst, wackestone. Gray caps on three of the localities are Plio-Pleistocene ferruginous rocks.

opencc-by-4.0May 2024View details →
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FIGURE 13 in A Composite Section of Fossiliferous Late Cretaceous- Early Paleogene Localities in Senegal and Preliminary Description of a New Late Maastrichtian Vertebrate Fossil Assemblage

FIGURE 13. Late Maastrichtian dyrosaurid crocodyliforms of the Cap de Naze Formation discovered at the North Quarry of Poponguine. A, B, Caudal vertebrae (SEN 062 and 064) from proximal region of tail in right lateral view; C, caudal vertebra (SEN 065) from middle of tail in right lateral view; D, distal caudal vertebra (SEN 073) in right lateral view; E, proximal right metatarsal II (SEN 069) in dorsal view; F, proximal right metatarsal II (SEN 059) from a larger individual; and G, isolated tooth crown (SEN 067) in labial view. Scalebars: A–F = 2 cm; G =1 cm.

opencc-by-4.0May 2024View details →
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FIGURE 1. A in A Composite Section of Fossiliferous Late Cretaceous- Early Paleogene Localities in Senegal and Preliminary Description of a New Late Maastrichtian Vertebrate Fossil Assemblage

FIGURE 1. A, Regional geologic map of western Senegal indicating names and ages of geologic formations exposed (after Roger et al., 2009), with black box indicating area under study (expanded in B). B, Positions of the four localities of the Ndayane/Poponguine area described in this paper: 1, Cap de Naze; 2, North Quarry of Poponguine; 3, Ndayane Cliff at Poponguine; and 4, Islet of Poponguine. All are in close proximity despite the variation in lithology among them. C, Position of field area in the Senegalese–Mauritanian Basin in western Senegal, West Africa.

opencc-by-4.0May 2024View details →
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FIGURE 2 in A Composite Section of Fossiliferous Late Cretaceous- Early Paleogene Localities in Senegal and Preliminary Description of a New Late Maastrichtian Vertebrate Fossil Assemblage

FIGURE 2. Composite of formation names for Late Cretaceous–Early Paleogene rocks of western Senegal.

opencc-by-4.0May 2024View details →
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FIGURE 4 in A Composite Section of Fossiliferous Late Cretaceous- Early Paleogene Localities in Senegal and Preliminary Description of a New Late Maastrichtian Vertebrate Fossil Assemblage

FIGURE 4. The four units visible at the Cap de Naze Cliff locality with the end Campanian Paki Formation and the Late Maastrichtian Cap de Naze Formation cropping out under a Pliocene capping. A, units 1–4 (figure modified from Cuny et al., 2012: fig. 2) and B, units 1–3.

opencc-by-4.0May 2024View details →
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Fig. 5 in New vertebrate microfossils expand the diversity of the chondrichthyan and actinopterygian fauna of the Maastrichtian-Danian Hornerstown Formation in New Jersey

Fig. 5. Stratigraphic occurrences of each taxon discussed in this study, with new range extensions noted in red. The range extensions shown are based on the global record of each taxon, and thus represent global temporal range extensions (i.e., they are not merely extensions in the record solely at Edelman Fossil Park). Placement and thickness of the Main Fossiliferous Layer (MFL) and "oyster layer" beneath it within the lower Hornerstown Formation are based on the findings of Voegele et al. (2021), and assignment of the dinoflagellate zones is based on Koch and Olsson (1977) and Aurisano (1989).

opencc-by-4.0Apr 2024View details →
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Fig. 1 in New vertebrate microfossils expand the diversity of the chondrichthyan and actinopterygian fauna of the Maastrichtian-Danian Hornerstown Formation in New Jersey

Fig. 1. Map showing the location of the outcrops of Cretaceous and Paleocene strata and Jean and Ric Edelman Fossil Park Quarry in Mantua Township, New Jersey, USA. Reproduced, with permission, from Ullmann et al. (2018).

opencc-by-4.0Apr 2024View details →
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Fig. 4 in New vertebrate microfossils expand the diversity of the chondrichthyan and actinopterygian fauna of the Maastrichtian-Danian Hornerstown Formation in New Jersey

Fig. 4. Remains of the alligatorid crocodilian Bottosaurus harlani (von Meyer, 1832) (A–C) and mosasaurid cf. Mosasaurus hoffmannii Mantell, 1829 (D) recovered from the Cretaceous–Paleogene lower Hornerstown Formation at the Jean and Ric Edelman Fossil Park in Mantua Township, New Jersey, USA. A. Posterior tooth (RU-EFP-02450) in labial (A1), lingual (A2), and mesial or distal (A3) views. B.?Posterior tooth (RU-EFP-03876) in labial (B1), lingual B2), and occlusal (B3) views. C. Left dentary (RU-EFP-03820) in dorsal (C1), medial (C2), lateral (C3), and ventral (C4) views. D. Right pterygoid (RU- EFP-03592) in medial (D1), ventral (D2), and lateral (D3) views. Abbreviations: av, alveolus; t, tooth.

opencc-by-4.0Apr 2024View details →

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