Text-fig. 10. Maxillae of Anura indeterminate morph 3 from the middle – late Campanian (Judithian) of Alberta, Canada and Montana, USA. All images are photographs and depict specimens lightly dusted with ammonium chloride to enhance details and texture. Images at different magnifications; see corresponding scale bars. a, b – incomplete left maxilla, AMNH FARB 8462, example of maxilla with smooth labial surface, in labial (a) and lingual (b) views, from Judith River Formation, Clambank Hollow, Montana. c, d – incomplete right maxilla, AMNH FARB 33040, example of maxilla with slightly roughened labial surface, in labial (c) and lingual (d) views, from Judith River Formation, Clambank Hollow, Montana. e, f – incomplete left maxilla, TMP 1987.029.0085, example of maxilla with tiny, scattered pits and some narrow, short grooves across labial surface, in labial (e) and lingual (f) views, from Oldman Formation, TMP locality L0409, Dinosaur Provincial Park, Alberta. g, h – incomplete left maxilla, AMNH FARB 33046, example of maxilla with more dense arrangement of tiny pits across labial surface, in labial (g) and lingual (h) views, from Judith River Formation, Clambank Hollow, Montana. i, j – incomplete left maxilla, UALVP 40218, example of maxilla with narrow, shallow grooves across labial surface, in labial (i) and lingual (j) views, from Dinosaur Park Formation, Irvine locality, Alberta. k – incomplete right maxilla, AMNH FARB 33041, example of maxilla with shallow, somewhat polygonal divots across labial surface, in labial view, from Judith River Formation, Clambank Hollow, Montana.

Published as part of Gardner, James D., Redman, Cory M. & Cifelli, Richard L., 2016, The Hopping Dead: Late Cretaceous Frogs From The Middle - Late Campanian (Judithian) Of Western North America, pp. 78-107 in Fossil Imprint 72 (1-2) on page 94, DOI: 10.14446/FI.2016.78, http://zenodo.org/record/4773056