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1830 19th_century ambiguous_gender ammonite ancient_art aquatic bite blood bodily_fluids brown_shell cephalopod cephalopod_shell crinoid crocodilian echinoderm feces feral fin fish flying green_body green_scales green_tail group henry_de_la_beche hi_res huge_eyes ichthyosaur large_group leaf long_neck membrane_(anatomy)membranous_wings mollusk mollusk_shell no_sclera open_mouth outside painting_(artwork)partially_submerged plant plesiosaur pooping prehistoric_species pterosaur public_domain quadruped reptile scales scalie sharp_teeth shell side_view sky species_request standing swimming tail teeth tentacles tree turtle violence watercolor_(artwork)wings