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FIGURE 22 in The late Maastrichtian Belemnella kazimiroviensis group (Cephalopoda, Coleoidea) in the Middle Vistula valley (Poland) and the Maastricht area (the Netherlands, Belgium) - taxonomy and palaeobiological implications

FIGURE 22. Estimation of percentage of belemnites of the kazimiroviensis group remaining in the habitat, calculated from size-group distribution at Nasiłów (Poland) and the Maastricht area (the Netherlands, Belgium).

FIGURE 21 in The late Maastrichtian Belemnella kazimiroviensis group (Cephalopoda, Coleoidea) in the Middle Vistula valley (Poland) and the Maastricht area (the Netherlands, Belgium) - taxonomy and palaeobiological implications

FIGURE 21. An excellently preserved specimen of Bln. kazimiroviensis (left) retaining part of the proostracum, together with a normally preserved guard (right) in the glauconitic sandstone at Nasiłów (field photograph; specimen with proostracum could not be collected completely).

FIGURE 19 in The late Maastrichtian Belemnella kazimiroviensis group (Cephalopoda, Coleoidea) in the Middle Vistula valley (Poland) and the Maastricht area (the Netherlands, Belgium) - taxonomy and palaeobiological implications

FIGURE 19. Belemnella (Neobelemnella) skolozdrownae (Kongiel 1962). 1-4, NHMM MK 2815, Albert Canal near Vroenhoven (61F-19), uppermost Meerssen Member; 5-8, NHMM JJ 8759, ENCI-HeidelbergCement Group quarry, Maastricht, Meerssen Member, IVf-4 or IVf-5; 9-12, MWGUW ZI/69/70, and 13-16, ZI/69/86 – from the glauconitic sandstone below the "phosphatic layer" at Nasiłów; 17-20, MWGUW ZI/69/60 and 21-24, ZI/69/61 – from the "phosphatic layer" at Nasiłów quarry. All specimens are in natural size in following views: dorsal (1, 5, 9, 13, 17, 21), lateral (2, 6, 10, 14, 18, 22), longitudinally split specimen showing internal features (3, 7, 11, 15, 19, 23), and close-up of alveolar part [x2] with the course of the bottom of ventral fissure – dashed line (4, 8, 12, 16, 20, 24).

FIGURE 2. 1 in The late Maastrichtian Belemnella kazimiroviensis group (Cephalopoda, Coleoidea) in the Middle Vistula valley (Poland) and the Maastricht area (the Netherlands, Belgium) - taxonomy and palaeobiological implications

FIGURE 2. 1, location of the Middle Vistula River valley section in the Europe; 2, location in Poland together with the schematic extension of the Cretaceous and pre-Cretaceous deposits in Poland (without the Cenozoic cover); 3, position of Nasiłów along the Vistula River between the villages of Solec nad Wisłą and Kazimierz.

FIGURE 18 in The late Maastrichtian Belemnella kazimiroviensis group (Cephalopoda, Coleoidea) in the Middle Vistula valley (Poland) and the Maastricht area (the Netherlands, Belgium) - taxonomy and palaeobiological implications

FIGURE 18. Relationship of BI (Birkelund Index) vs Dp (dorso ventral diameter at the protoconch) (BI = Ls/Dp; compare with Figure 6) of guards of Bln. kazimiroviensis from the Middle Vistula valley and the Maastricht area. The growth relationship is best described by a logarithmic curve.

opencc-by-4.0Dec 2023View details →

Table 1 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway

Table 1. Taxa from the Arkadelphia Formation (Cabot locality, Arkansas, USA) with number of specimens, percentage of total, and occurrences in the Cretaceous and Paleocene of North America. Letters in third and fourth columns refer to the following references: A =Stringer et al. (2020); B = Schwarzhans and Stringer (2020a); C = Schwarzhans et al. (2018b); D = Hoganson et al. (2019); E =Stringer et al. (2018); F = Schwarzhans (1985); G = Frizzell (1965a). References are not inclusive but provide evidence of the range of the species in North America. Order=FORMES, Family=idae<table><tbody><tr><th>Taxa</th><th>No. of specimens</th><th>% of total</th><th>Known N. Am Cretaceous</th><th>Known N. Am Paleocene</th></tr><tr><th>ELOPIFORMES Elopidae</th></tr></tbody><tbody><tr><th>Elops sp.</th><td>1</td><td>0.05</td><td>C</td><td>F</td></tr><tr><th>ALBULIFORMES</th></tr><tr><th>Albulidae</th></tr><tr><th>Albuliformes indeterminate</th><td>4</td><td>0.19</td><td>E</td><td>B</td></tr><tr><th>Elopothrissus sp.</th><td>1</td><td>0.05</td><td>A</td><td>B</td></tr><tr><th>ORDER INDETERMINATE Family indeterminate</th></tr><tr><th>Genartina sp.</th><td>1</td><td>0.05</td><td>B</td><td>B</td></tr><tr><th>Osmeroididae</th></tr><tr><th>Osmeroides sp.</th><td>3</td><td>0.14</td><td>A</td><td>G</td></tr><tr><th>ANGUILLIFORMES</th></tr><tr><th>Anguillidae</th></tr><tr><th>Anguilla? chickasawae</th><td>6</td><td>0.28</td><td>A</td><td>B</td></tr><tr><th>Ophichthidae</th></tr><tr><th>Echiophis aff. E. semisphaeroides</th><td>11</td><td>0.52</td><td>B</td><td>B</td></tr><tr><th>Family Indeterminate</th></tr><tr><th>Muraenanguilla? sp.</th><td>2</td><td>0.09</td><td>A</td><td>B</td></tr><tr><th>OSTEOGLOSSIFORMES</th></tr><tr><th>Family indeterminate</th></tr><tr><th>Kokenichthys navis</th><td>2</td><td>0.09</td><td>A</td><td>No</td></tr><tr><th>CLUPEIFORMES</th></tr><tr><th>Family indeterminate</th></tr><tr><th>Clupeiform? indeterminate</th><td>1</td><td>0.05</td><td>—</td><td>—</td></tr><tr><th>SILURIFORMES</th></tr><tr><th>Ariidae</th></tr><tr><th>Arius? subtilis</th><td>1</td><td>0.05</td><td>A</td><td>B</td></tr><tr><th>Family indeterminate</th></tr><tr><th>Vorhisia vulpes</th><td>1,537</td><td>72.88</td><td>A</td><td>No</td></tr><tr><th>AULOPIFORMES</th></tr><tr><th>Ichthyotringidae</th></tr><tr><th>Apateodus crenellatus?</th><td>3</td><td>0.14</td><td>A</td><td>No</td></tr><tr><th>GADIFORMES</th></tr><tr><th>Merlucciidae</th></tr><tr><th>Palaeogadus? belli sp. nov.</th><td>148</td><td>7.02</td><td>No</td><td>No</td></tr><tr><th>Palaeogadus cf. P. weltoni</th><td>1</td><td>0.05</td><td>B</td><td>No</td></tr><tr><th>GADIFORMES</th></tr><tr><th>Family indeterminate</th></tr><tr><th>Gadiformes indeterminate</th><td>11</td><td>0.52</td><td>—</td><td>—</td></tr><tr><th>HOLOCENTRIFORMES</th></tr><tr><th>Family indeterminate</th></tr><tr><th>Tippaha mythica</th><td>8</td><td>0.38</td><td>A</td><td>No</td></tr><tr><th>BERYCIFORMES</th></tr><tr><th>Family indeterminate</th></tr><tr><th>Eutawichthys maastrichtiensis</th><td>21</td><td>1.00</td><td>A</td><td>No</td></tr><tr><th>Eutawichthys zideki</th><td>287</td><td>13.61</td><td>A</td><td>No</td></tr><tr><th>Eutawichthys cf. E. stringeri</th><td>48</td><td>2.28</td><td>C</td><td>No</td></tr><tr><th>OPHIDIIFORMES</th></tr><tr><th>Ophidiidae</th></tr><tr><th>Ampheristus cf. A. americanus</th><td>6</td><td>0.28</td><td>B</td><td>B</td></tr><tr><th>Bythitidae</th></tr><tr><th>Protobythites brzobohatyi</th><td>4</td><td>0.19</td><td>B</td><td>No</td></tr><tr><th>ORDER UNKNOWN</th></tr><tr><th>Family unknown</th></tr><tr><th>Lapillus type 1</th><td>1</td><td>0.05</td><td>A</td><td>No</td></tr><tr><th>Family unknown</th></tr><tr><th>Unknown sagitta</th><td>1</td><td>0.05</td><td>n/a</td><td>n/a</td></tr><tr><th>Total</th><td>2,109</td><td>~100</td><td></td><td></td></tr></tbody></table>

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Table 3 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway

Table 3. Percentage similarity measurements for the otolith assemblages from the Arkadelphia Formation (Cabot locality, Arkansas, USA), Fox Hills Formation (NDGS 5597, North Dakota, USA), Kemp Clay (South Sulphur River locality, Texas, USA), Ripley Formation (Blue Springs locality, Mississippi, USA, and Severn Formation (five sites, Maryland, USA). Data for calculations were obtained from this study (Table 1) for the Arkadelphia Formation (Cabot locality), from Hoganson et al. (2019) for the Fox Hills Formation (NDGS 5597 locality), from Schwarzhans and Stringer (2020a) for the Kemp Clay (South Sulphur River locality), from Stringer et al. (2020, table 2) for the Ripley Formation (Blue Springs locality; bulk samples only), and from Stringer and Schwarzhans (2021; table 3) for the Severn Formation (four sites).<table><tbody><tr><th>Localities compared</th><th>Percent similarity</th></tr></tbody><tbody><tr><th>Arkadelphia Formation (Cabot locality, Arkansas) and Fox Hills Formation (NDGS 5597, North Dakota)</th><td>30.32%</td></tr><tr><th>Arkadelphia Formation (Cabot locality, Arkansas) and Kemp Clay (South Sulphur River locality Texas)</th><td>35.73 %</td></tr><tr><th>Arkadelphia Formation (Cabot locality, Arkansas) and Ripley Formation (Blue Springs locality, Mississippi)</th><td>5.46%</td></tr><tr><th>Arkadelphia Formation (Cabot locality, Arkansas) and Severn Formation (four sites in Maryland)</th><td>57.68%</td></tr><tr><th>Kemp Clay (South Sulphur River locality, Texas) and Ripley Formation (Blue Springs locality, Mississippi)</th><td>3.33%</td></tr></tbody></table>

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Tabl. 2 in The Jordan theropod (Maastrichtian, Montana, U. S. A.) referred to the genus Aublysodon

Tabl. 2 - Characters used in determining the relationships of Aublysodon. Caractères utilises pour determiner la position systématique Ae Aublysodon.<table><tbody><tr><th>character</th><th>plesiomorphic/apomorphic</th></tr></tbody><tbody><tr><th>1. premaxillary teeth D-shaped in section</th><td>a</td></tr><tr><th>2. premaxillary teeth not serrate</th><td>p</td></tr><tr><th>3. premaxillary teeth with low ridge on posterior face</th><td>a</td></tr><tr><th>4. cheek teeth relatively large (with respect to depthof muzzle and jaw)</th><td>p</td></tr><tr><th>5. muzzle long and low</th><td>p</td></tr><tr><th>6. frontals longer than wide</th><td>p</td></tr><tr><th>7. two or three prongs of nasal overlap frontal</th><td>a</td></tr><tr><th>8. dorsolaterally directed prefrontal contact on frontal</th><td>p</td></tr><tr><th>9. socket for prefrontal on frontal</th><td>p</td></tr><tr><th>10. elongate contact for prefrontal on frontal</th><td>p</td></tr><tr><th>11. orbital rim on frontal very short</th><td>p</td></tr><tr><th>12. frontal-prefrontal suture expanded</th><td>p</td></tr><tr><th>13. pronounced buttress at frontal-postorbital contact</th><td>p</td></tr><tr><th>14. parietal process separates frontal posteriorly</th><td>p</td></tr><tr><th>15. sagittal crest extends onto frontals</th><td>p</td></tr><tr><th>16. frontals essentially flat between orbits</th><td>p</td></tr><tr><th>17. nasals smooth</th><td>p</td></tr><tr><th>18. anterior margin of antorbital fossa v-shaped</th><td>p</td></tr><tr><th>19. acute angle of premaxillary-maxillary contact withventral margin of snout</th><td>p</td></tr><tr><th>20. ventral margin of symphysis only slightly inclinedto horizontal</th><td>p</td></tr></tbody></table>Characters 1 to 8, 10, and 17 to 20 discussed in text, characters 9 and 11 to 16 from Currie (1987).

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Fig. 3 in The Jordan theropod (Maastrichtian, Montana, U.S.A.) referred to the genus Aublysodon

Fig. 3 - Serrations of left sixth maxillary tooth. A, posterior serrations viewed from the left; B, anterior serrations viewed from the right; C, posterior serrations viewed from behind. These serrations are rendered as unworn, not as preserved. Scale bar represents 1.5 mm. hes crénelures de la sixième dent maxijlaire gauche. A, crénelures postérieures vues de la gauche; B, crénelures antérieures vues de la droite; C, les crénelures postérieures vues de l'arrière. Ces crénelures sont figurées sans usure, non telles qu'elles sont conservées. Echelle = 1,5 mm.

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Fig. 1 in The Jordan theropod (Maastrichtian, Montana, U.S.A.) referred to the genus Aublysodon

Fig. 1 - Frontals and parietal of Aublysodon cf. A.mirandus (LACM 28471) in dorsal view. Diagonal lines indicate regions of damaged or missing bone surface. Scale bar represents 10 mm. Lcs frontaux et le parietal d'Aublysodon cf. A. mirandus (LACM 28471) en vue dorsale. Les parties des ossements endommagées ou absentes sont hachurées. Echelle = 10 mm.

opencc-by-4.0Mar 2015View details →

FIG. 3 in A medium-sized robust-necked azhdarchid pterosaur (Pterodactyloidea: Azhdarchidae) from the Maastrichtian of Pui (Haţeg Basin, Transylvania, Romania)

FIG. 3. Interpretative drawing of LPV (FGGUB) R.2395, almost complete fourth cervical from Pui, Haţeg Basin in anterior (A), ventral (B), dorsal (C), and right (D) and left lateral (E) views. Abbreviations: Cot, cotyla; DPrezygT, dorsal prezygapophyseal tubercle; Hyp, hypapophysis; Intzyg, interzygapophyseal area/space; NS, neural spine; Prezyg, prezygapophysis; Trab, trabecula; VPrezygT, ventral prezygapophyseal tubercle.

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FIG. 1 in A medium-sized robust-necked azhdarchid pterosaur (Pterodactyloidea: Azhdarchidae) from the Maastrichtian of Pui (Haţeg Basin, Transylvania, Romania)

FIG. 1. Map of the Haţeg Island region, present-day Transylvania (Romania). The contemporaneous Transylvanian and Haţeg basins are indicated; the Pui locality is just a few kilometers from the town of Haţeg.

FIG. 6 in Albanerpetontid Amphibians from the Upper Cretaceous (Campanian and Maastrichtian) of North America

FIG. 6. — Frontals of Albanerpeton nexuosus Estes, 1982 and A. galaktion Fox & Naylor, 1981, lower Campanian (Aquilan in age), Alberta; A-E, A. nexuosus; A, B, UALVP 39996, fused frontals lacking anterior and posterior ends, A, dorsal view, B, ventral view; C, UALVP 39983, anterior part of fused frontals, dorsal view; D, UALVP 39989, posterior part of left frontal, ventral view; E, UALVP 39987, fragmentary fused frontals, ventral view; F-K, A. galaktion; F, G, UALVP 16216, fused and incomplete frontals missing anteri- or end of bone and posterior end of both ventrolateral crests, F, dorsal view, G, ventral view; H, UALVP 39946, anterior part of fused frontals, dorsal view; I, J, UALVP 39945, posterior one-half of fused frontals missing posterior end of both ventrolateral crests, I, dorsal view, J, ventral view; K, UALVP 39951, right posterior part of fused frontals, ventral view. All specimens are from the Milk River Formation. Scale bars: 1 mm.

FIG. 3 in Albanerpetontid Amphibians from the Upper Cretaceous (Campanian and Maastrichtian) of North America

FIG. 3. — Maxillae of Albanerpeton nexuosus Estes, 1981 and A. galaktion Fox & Naylor, 1982; Campanian and Maastrichtian (Aquilan to Lancian in age), North American Western Interior; A-H, A. nexuosus; A, B, UALVP 16242, incomplete right maxilla; A, labial view, B, lingual view; C, UALVP 39973, incomplete right maxilla, lingual view; D, OMNH 60245, incomplete right maxilla, labial view; E, UALVP 39977, incomplete right maxilla, labial view; F, OMNH 60239, anterior part of left maxilla, lingual view; G, H, UALVP 16239, anterior part of right maxilla, G, lingual view, H, dorsal view; I-N, A. galaktion; I-K, UALVP 16240, incomplete right maxilla, I, labial view, J, lingual view, K, dorsal view; L-N, UALVP 16241, incomplete right maxilla, L, labial view, M, lingual view, N, dorsal view. Provenances: A-C, E, G-N, UALVP specimens, Milk River Formation, lower Campanian (i.e. Aquilan in age), Alberta; D, OMNH 60245, Kaiparowits Formation, Utah; F, OMNH 60239, Aguja Formation, Texas, both middle Campanian (i.e. Judithian in age). Scale bars: 1 mm.

FIG. 2 in Albanerpetontid Amphibians from the Upper Cretaceous (Campanian and Maastrichtian) of North America

FIG. 2. — Dentaries of Albanerpeton nexuosus Estes, 1981 and A. galaktion Fox & Naylor, 1982, Campanian and Maastrichtian (Aquilan to Lancian in age), North American Western Interior; A-I, A. nexuosus; A, B, UCMP 49540, topotypic right mandible consisting of incomplete dentary and anterior tip of angular, A, lingual view, B, occlusal view; C, UCMP 49535, incomplete topotypic right dentary, lingual view; D, E, UCM 38714, incomplete left dentary, D, labial view, E, lingual view; F, RTMP 96.78.152, anterior part of left dentary, lingual view; G, UALVP 16238, anterior part of right dentary, labial view; H, UALVP 40014, anterior part of right dentary, labial view; I, UALVP 40032, posterior part of left dentary missing posteriormost end of area for attachment of postdentary bones, lingual view; J-M, A. galaktion; J, UALVP 16221, incomplete small, left dentary, lingual view; K-M, UALVP 16217, incomplete large, right dentary, K, labial view, L, lingual view, M, occlusal view. Provenances: A-C, UCMP specimens, Lance Formation, Wyoming; D, E, UCM specimen, Laramie Formation, Colorado, all upper Maastrichtian (i.e. Lancian in age); F, RTMP specimen, Oldman Formation, middle Campanian (i.e. Judithian in age), Alberta; G-M, UALVP specimens, Milk River Formation, lower Campanian (i.e. Aquilan in age), Alberta. Scale bars: 1 mm.

FIG. 8 in Albanerpetontid Amphibians from the Upper Cretaceous (Campanian and Maastrichtian) of North America

FIG. 8. — Frontals of Albanerpeton gracilis n. sp. and atlas of indeterminate albanerpetontid genus and species, Campanian (Judithian and Aquilan in age), Alberta; A-E, A. gracilis n. sp.; A, B, RTMP 86.194.8, fused and nearly complete frontals, A, dorsal view, B, ventral view; C, RTMP 96.78.135, fused and nearly complete frontals with medial end of right prefrontal (arrow) preserved in articulation, ventral view; D, E, RTMP 95.181.67, fused frontals missing anterior part, D, dorsal view, E, ventral view; F-H, genus and species indeterminate; F, G, UALVP 16234, nearly complete atlas missing part of left wall of neural arch, F, anterior view, G, posteri- or view; H, right lateral view, with arrows indicating foramen on right side for exit of first spinal nerve. Provenances: A, B, D, E, A. gracilis n. sp., Dinosaur Park, C, Oldman formations, middle Campanian (i.e. Judithian in age); F-H, genus and species indeterminate, Milk River Formation, lower Campanian (i.e. Aquilan in age). Scale bar: 1 mm.

FIG. 1 in Albanerpetontid Amphibians from the Upper Cretaceous (Campanian and Maastrichtian) of North America

FIG. 1. — Map showing locations of important Upper Cretaceous (Campanian and Maastrichtian) albanerpetontid-bearing sites in the North American Western Interior. Inset map in upper right shows areas (shaded) of provinces in Canada and states in the United States depicted in larger map. Localities and formations: 1, KUA-1, Red Deer River Valley, Scollard Formation; 2, RTMP L0406, L0411, and L0413, Oldman Formation, and RTMP L0051, L0054, L0086, L0410 (holotype locality of Albanerpeton gracilis n. sp.), L1108, L1118-L1120, Dinosaur Park Formation, all in Dinosaur Provincial Park; 3, Scabby Butte, near Lethbridge, St. Mary River Formation; 4, UALVP MR-2, -4, -6 (holotype locality of A. galaktion Fox & Naylor, 1982), -8, -9, -12, -20, Verdigris Coulee, Deadhorse Coulee Member, Milk River Formation; 5, RTMP L1124, Foremost Formation, and RTMP L1127, L1128, L1131, L1137, and L1141, Oldman Formation, all near Manyberries; 6, Woodpile Creek, near Willow Creek, Oldman or Dinosaur Park formations; 7, Wounded Knee, Frenchman River Valley, Frenchman Formation; 8, Gryde, Frenchman River Valley, Frenchman Formation; 9, Clambank Hollow, Chouteau County, Judith River Formation; 10, Bug Creek Anthills, McCone County, Hell Creek Formation; 11, UCMP V-5620 (holotype locality of A. nexuosus Estes, 1981) and -5711, Niobrara County, Lance Formation; 12, UW V-79032, Sweetwater County, Lance Formation; 13, UCM locality 77062, Weld County, Laramie Formation; 14, OMNH V5, V6, and V61, Garfield and Kane counties, Kaiparowits Formation; 15, OMNH V2, V11, and V16, Kane County, Wahweap Formation; 16, KUVP NM-37, upper Fruitland Formation or lower Kirtland Formation, KUVP NM-18, lower Kirtland Formation, and localities in Fruitland Formation listed by Armstrong-Ziegler (1980), all San Juan Basin; 17, OMNH V58/TMM 43057, Brewster County, Aguja Formation. Locality information from Clemens et al. (1979), Carpenter (1979), Breithaupt (1982), Cifelli (1990), Rowe et al. (1990), Storer (1993), and D. Miao (pers. comm. 1999).

FIG. 7 in Albanerpetontid Amphibians from the Upper Cretaceous (Campanian and Maastrichtian) of North America

FIG. 7. — Jaws of Albanerpeton gracilis n. sp., middle Campanian (Judithian in age), North American Western Interior; A, B, RTMP 95.181.70 (holotype), incomplete left premaxilla; A, labial view; B, lingual view; C-E, RTMP 96.78.191, nearly complete right premaxilla; C, labial view; D, lingual view; E, occlusal view; F, OMNH 60321, incomplete right premaxilla, lingual view; G, OMNH 60242, incomplete left premaxilla, lingual view; H, RTMP 96.78.196, incomplete right premaxilla, lingual and slightly occlusal view; I, RTMP 95.180.64, incomplete left premaxilla, lateral view; J-L, RTMP 95.157.73, nearly complete left maxilla; J, lingual view; K, dorsal view; L, occlusal view; M, N, RTMP 95.177.80, incomplete left maxilla; M, lingual view; N, dorsal view; O, RTMP 96.78.103, anterior part of left dentary, lingual view; P, Q, RTMP 95.181.68, medial part of left dentary; P, labial view; Q, lingual view. Provenances: A, B, J-L, P, Q, RTMP specimens, Dinosaur Park; C-E, H, I, M-O, RTMP specimens, Oldman formations, all from Alberta; F, OMNH specimens, Kaiparowits Formation, Utah; G, Aguja Formation, Texas. Scale bar: 1 mm.

FIG. 4 in Albanerpetontid Amphibians from the Upper Cretaceous (Campanian and Maastrichtian) of North America

FIG. 4. — Premaxillae of Albanerpeton galaktion Fox & Naylor, 1982, Campanian (Aquilan and Judithian in age), North American Western Interior; A, B, UALVP 16203, holotype, nearly complete left premaxilla; A, labial view; B, lingual view; C, D, UALVP 16204, nearly complete right premaxilla; C, labial view; D, lingual view; E, F, RTMP 95.177.81, nearly complete right premaxilla; E, labial view; F, lateral and slightly dorsal view; G, H, UALVP 16212, left premaxilla missing dorsal part of pars dorsalis; G, lingual view; H, occlusal view; I, RTMP 96.78.124, left premaxilla, occlusal view. Provenances: A-D, G, H, UALVP specimens, Milk River Formation, lower Campanian (i.e. Aquilan in age); E, F, I, RTMP specimens, Oldman Formation, middle Campanian (i.e. Judithian in age), all from Alberta. Arrows: 1, palatal foramen; 2, unnamed foramen in junction between pars palatinum and pars dentalis. Scale bar: 1 mm.