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441 results for “Maastrichtian”
Fig. 4 in The titanosaur sauropods from the late Campanian-early Maastrichtian Allen Formation of Salitral Moreno, Río Negro, Argentina
Fig. 4. Titanosaur sauropod Aeolosaurus sp. from Salitral Moreno locality, Rio Negro, Argentina, Campanian–Maastrichtian, Upper Cretaceous. A. Left femur (MPCA−Pv 27177), in posterior (A1) and distal (A2) views. B. Left pubis (MPCA−Pv 27174), in anterolateral view. C. Right ischium (MPCA−Pv 27174), in lateral (C1) and pubis articular surface (C2) views. D. Metatarsal I (MPCA−Pv 27178), in medial (D1) and proximal (D2) views.
Fig.10 in The titanosaur sauropods from the late Campanian-early Maastrichtian Allen Formation of Salitral Moreno, Río Negro, Argentina
Fig.10. Titanosauria gen. et sp. indet. 2. from Salitral Moreno locality, Rio Negro, Argentina, Campanian–Maastrichtian, Upper Cretaceous. A. Caudal vertebrae (MPCA−Pv 88/B), in posterior (A1) and anterior (A2) views. B. Right humerus (MPCA−Pv 88/A), in anterior view.
Fig. 2 in New lissamphibians and squamates from the Maastrichtian of Haţeg Basin, Romania
Fig. 2. Albanerpeton sp. A. PSMUBB V 180, left premaxilla in lingual (A1) and labial (A2) views. B. PSMUBB V 195, right maxilla in lingual (B1) and labial (B2) views. C. PSMUBB V 237, left dentary in lingual (C1), labial (C2), and occlusal (C3) views. D. PSMUBB V 308, small fragmentary frontal in ventral (D1) and dorsal (D2) views. E. PSMUBB V 317, distal end of a left humerus in ventral view. F. PSMUBB V 328, atlas in anterior view. G. PSMUBB V 334, axis in dorsal view. SEM migrographs.
Fig. 1 in New lissamphibians and squamates from the Maastrichtian of Haţeg Basin, Romania
Fig. 1. The outcrop (Pui Islaz, indicated by a star) attributed to the Maastrichtian Sânpetru Formation, is located in the Bărbat River bed south of the village of Pui. The grey areas indicate the sedimentary basins (I, Rusca Montana Basin; II, Strei Basin; III, Haţeg Basin; IV, Petrosani Basin). Modified from Codrea et al. (2002).
Fig. 3. A–E. Discoglossidae. A. PSMUBB V 356 in New lissamphibians and squamates from the Maastrichtian of Haţeg Basin, Romania
Fig. 3. A–E. Discoglossidae. A. PSMUBB V 356, cf. Eodiscoglossus sp., left ilium in lateral view. B, C. cf. Paradiscoglossus sp. B. PSMUBB V 357, great form, right ilium in lateral view. C. PSMUBB V 358, small form, left ilium in lateral view. D, E. Discoglossidae indet. D. PSMUBB V 353, urostyle in dorsal view. E. PSMUBB V 355 sacral vertebra in ventral view. F, G. Becklesius. F. PSMUBB V 365, B. cf. hoffstetteri, left dentary in lingual view. G. PSMUBB V 361, holotype of B. nopcsai sp. nov., fragment of left dentary (G1) and tooth crown (G2) in lingual view. SEM migrographs.
Fig. 5 in Theropod teeth from the upper Maastrichtian Hell Creek Formation "Sue" Quarry: New morphotypes and faunal comparisons
Fig. 5. Principal components analysis of "Sue" quarry dromaeosaurid teeth. Analysis contained variables height, FABL, basal width, and denticles/ mm. PC 1 ([0.40 FABL]+[0.1 basal width]+[0.54 height]-[0.74 denticles/ mm]) explained 77.53% of the variance. PC 2 ([0.06 FABL]+[0.03 basal width]+[0.79 height]+[0.61 denticles/mm]) explained 20.17% of the variance. PC 3 ([0.91 FABL]+[0.08 basal width]-[0.29 height]+[0.28 denticles/ mm]) explained 2.30% of the variance.
Fig. 2 in Theropod teeth from the upper Maastrichtian Hell Creek Formation "Sue" Quarry: New morphotypes and faunal comparisons
Fig. 2. Scanning electron image of select theropod teeth from the late Maastrichtian "Sue" locality, USA. A–D. Dromaeosauridae: FMNH PR 2893 A), FMNH PR 2896 (B), FMNH PR 2897 (C), FMNH PR 2899 (D). E. Troodontidae: FMNH PR 2900. F. Avialae: FMNH PR 2901. G. Tyrannosauridae: FMNH PR 2902. Scale bars 1 mm (refer to Table 1 for measurements of each tooth).
Fig. 4 in Theropod teeth from the upper Maastrichtian Hell Creek Formation "Sue" Quarry: New morphotypes and faunal comparisons
Fig. 4. Principal components analysis of troodontid teeth from Hell Creek and Lance formations (×) and alleged troodontid tooth FMNH PR 2901 from the "Sue" quarry (circle). Analysis contained variables height, FABL, and denticles/mm. PC 1 ([0.45 FABL]+[0.20 basal width]+[0.68 height]-[0.55 denticles/mm]) explained 48.04% of the variance. PC 2 ([0.01 FABL]+[0.03 basal width]+[0.62 height]+[0.78 denticles/mm]) explained 40.73% of the variance. PC 3 ([0.88 FABL]+[0.05 basal width]-[0.37 height]+[0.28 denticles/mm]) explained 9.46% of the variance.
Fig. 3 in Theropod teeth from the upper Maastrichtian Hell Creek Formation "Sue" Quarry: New morphotypes and faunal comparisons
Fig. 3. Principal components analysis of Richardoestesia teeth from Hell Creek and Lance formations (circles) and dromaeosaurid tooth FMNH PR 2899 from the Sue quarry (cross). Analysis contained variables height, FABL, and denticles/mm. PC 1 ([0.28 FABL]+[0.94 height]-[0.19 denticles/mm]) explained 76.36% of the variance. PC 2 ([0.03 FABL]+[0.18 height]+[0.98 denticles/mm]) explained 22.51% of the variance. PC 3 ([0.96 FABL]-[0.28 height]+[0.02 denticles/mm]) explained 1.13% of the variance.
Fig. 1 in Theropod teeth from the upper Maastrichtian Hell Creek Formation "Sue" Quarry: New morphotypes and faunal comparisons
Fig. 1. Principal components analysis of all teeth from the "Sue" theropod sample, Sankey (2008) tooth database (except Paronychodon and Richardoestesia), and Smith et al. (2005; Deinonychus, Dromaeosaurus, and Troodon). Principal components: (1) ([0.41 FABL]+[0.1 basal width]+[0.90 height]-[0.07 denticles/mm]) explained 77.01% of variance; (2) ([-0.03 FABL]+[0.02 basal width]+[0.09 height]+[1 denticles/mm]) explained 16.58% variance; and (3) ([0.82 FABL]+[0.40 basal width]-[0.41 height]+[0.05 denticles/mm]) 5.00% variance.
Fig. 7 in Theropod teeth from the upper Maastrichtian Hell Creek Formation "Sue" Quarry: New morphotypes and faunal comparisons
Fig. 7. Biplot of dromaeosaurid teeth from "Sue" quarry (dots) and Sankey (2008) database (crosses) measuring height versus denticles/mm. Ovals are the 95% confidence ellipses for each dataset, Sue quarry solid oval and Sankey database in dashed oval. Sue specimens are designated by the specimen number that follows FMNH PR in each instance.
Fig. 6 in Theropod teeth from the upper Maastrichtian Hell Creek Formation "Sue" Quarry: New morphotypes and faunal comparisons
Fig. 6. Principal components analysis of "Sue" quarry dromaeosaurid teeth (dots) in addition to the dromaeosaurid teeth (crosses) included in Sankey (2008). Analysis contained variables height, FABL, and denticles/mm. Basal width was not included because this variable was not included in the Sankey (2008) dataset. PC 1 ([0.38 FABL]+[0 basal width]+[0.90 height]-[0.23 denticles/mm]) explained 89.91% of the variation. PC 2 ([-0.36 FABL]-[0.01 basal width]+[0.38 height]+[0.85 denticles/mm]) explained 6.91% of the variation. PC 3 ([0.85 FABL]-[0.01 basal width]-[0.24 height]+[0.47 denticles/mm]) explained 3.17% of the variation. Ovals are the 95% confidence ellipses for each dataset, "Sue" quarry solid oval and Sankey database in dashed oval. Sue specimens are designated by the specimen number that follows FMNH PR in each instance.
Fig. 3 in Fusiteuthis polonica, a rare and unusual belemnite from the Maastrichtian
Fig. 3. Stratigraphical diagram, showing the range of Fusiteuthis Kongiel on the north European belemnite zonal scale. This scale was critically assessed by Christensen (1996), who noted that the Early Maastrichtian Belemnella zones are either interval or total range zones. Moreover, he showed that the base of the B. kazimiroviensis Zone is highly diachronous and becomes progressively younger from the eastern part of the Russian Platform in the east to the Netherlands in the west. The zone is Late Maastrichtian in the east, late Late Maastrichtian in Denmark and latest Maastrichtian in the Netherlands.
Fig. 2. Fusiteuthis polonica Kongiel, 1962. A in Fusiteuthis polonica, a rare and unusual belemnite from the Maastrichtian
Fig. 2. Fusiteuthis polonica Kongiel, 1962. A. Holotype MZ VIII Med 162 in dorsal (A1), lateral (A2), ventral (A3) views, and view of the ventral anterior end of the guard, showing the ventral fissure (A4), approximately × 5. B. MGUH 26406, "Saturn" chalk pit at Kronsmoor, uppermost part of the Belemnella lanceolata Zone, ca. 3.5 m below marker horizon G 610 in dorsal (B1), lateral (B2), ventral (B3) views, and view of the ventral anterior end of the guard, showing the ventral fissure (B4), × 4. MGUH 26406 is registered in the Type Collection of the GeologicalMuseum,UniversityofCopenhagen.Allfiguresarecoatedwith ammonium chloride and are natural size unless otherwise stated.
Fig. 1 in Fusiteuthis polonica, a rare and unusual belemnite from the Maastrichtian
Fig. 1. Dots show the geographical occurrences of the Maastrichtian belemnitellid genus Fusiteuthis Kongiel.
Fig.8 in Campanian and Maastrichtian mosasaurid reptiles from central Poland
Fig.8."Mosasaurus (Leiodon)cfr. anceps" sensu Arambourg(1952),fromtheupperUpperMaastrichtianopokaatNasiłów. A.ZPALR.9/3inposterior (A1) and buccal (A2) views. B. ZPAL R. 9/4 in anterior (B1), buccal (B2), posterior (B3), and lingual (B4) views.
Fig.7 in Campanian and Maastrichtian mosasaurid reptiles from central Poland
Fig.7. Mosasaurus cf. lemonnieri Dollo,1889c,fromtheupperUpperMaastrichtianopokaatNasiłów. A.ZPALR.9/2inlingual(A1),anterior(A2),buccal (A3),andposterior(A4)views. B.ZPALR.9/1inbuccal (B1),posterior(B2),anterior(B3),andlingual(B4)views. C.ZPALR.9/5inobliquebuccalview.
Fig.6 in Campanian and Maastrichtian mosasaurid reptiles from central Poland
Fig.6. Mosasaurus cf. hoffmanni Mantell,1829,fromthe Upper Campanian opoka at Maruszów. A. ZPAL R.I/1, left−handsidetoothinBin anterior(A1),buccal(A2),and posterior (A3) views. B. ZPAL R.I/1, three tooth crowns preserved in original jaw position (although jaw bone is not preserved).
Fig.1 in Campanian and Maastrichtian mosasaurid reptiles from central Poland
Fig.1.LocationofoutcropsincentralPoland(starlets),whichhaveyielded the mosasaur remains referred to in the text.
Fig.4 in Campanian and Maastrichtian mosasaurid reptiles from central Poland
Fig.4. Mosasaurus cf. hoffmanni Mantell,1829,fromtheUpperCampanianopokaatMaruszów,ZPALR.I/1,partialupperjawinbuccal(A),occlusal(B), and lingual (C) views.
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International Brain Laboratory public data
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OpenNeuro
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