Ribs of Hydrodamalis (TOYA-Fo-7355) from Zukawa Formation, Toyama Prefecture, Japan (Photos)
Photographs of Hydrodamalis fossils from Zukawa Formation, Toyama Prefecture, Japan. 1, proximal part of anterior rib (RB1): 1a, lateral, 1b, proximal or distal cross section, 1c, medial. 2, proximal part of middle rib of right (RB2): 2a, lateral, 2b, proximal, 2c, medial. 3, tubercle of middle rib (RB3): 3a, lateral, 3b, proximal or distal, 3c, anterior or posterior. 4, tubercle of middle rib (RB): 4a, lateral, 4b, anterior or posterior. 5, middle part of middle rib (RB5): 5a, lateral, 5b, proximal, 5c, anterior or posterior. 6, middle part of middle rib (RB6): 6a, lateral, 6b, proximal or distal, 6c, anterior or posterior. 7, proximal part of posterior rib of left (RB7): 7a, lateral, 7b, distal, 7c, medial. 8, distal part of posterior rib (RB8): 8a, lateral, 8b, medial, 8c, distal. 9, middle part of posterior rib (RB9): 9a, medial, 9b, lateral, 9c, proximal or distal. 10, middle part of posterior rib (RB10): 10a, lateral, 10b, anterior or posterior, 10c, proximal or distal. 11, distal part of posterior rib (RB11): 11a, lateral, 11b, distal, 11c, medial. 12, distal part of posterior rib (RB12); 12a, lateral, 12b, proximal, 12c, medial. All scale bars are equal to 5 cm.