Related by context. Frequent words. (Click for all words.) 56 anatomical structures 54 pectoral fins 53 protuberances 53 caudal 53 dorsal 53 canine teeth 52 whorls 52 forelimb 52 ventral 52 mandibles 51 almond shaped 51 pharynx 51 mottling 51 dorsal fins 51 bird beak 50 placental mammals 50 anthers 50 incisor 50 sensory organs 50 stamens 50 canine tooth 50 sclera 50 snail shells 50 mouthparts 49 nasal cavities 49 incisors 49 mantis shrimp 49 fossa 49 maxillary 49 serrated teeth 49 otolith 49 cranial nerves 49 photoreceptor cells 48 mandibular 48 papules 48 protrusions 48 mottled brown 48 gill 48 whorl 48 sea anemones 48 occipital 47 lamina 47 conjunctival 47 cuboid 47 pharyngeal 46 mandible 46 radiographically 46 hind limbs 46 kidney grille 46 circumferences 46 lobes 46 glans 46 dentition 46 striations 46 ganglion cells 46 upper eyelid 46 acetabulum 46 vertically stacked 46 lobed 46 medulla 46 Radiographs 46 footpads 46 anglerfish 45 voxels 45 ovoid 45 iridescent blue 45 oviduct 45 conjunctiva 45 threadlike 45 osseous 45 pectoral fin 45 stippled 45 uvula 45 sepals 45 perfectly symmetrical 45 skeletonized 45 bushy tail 45 ganglion 45 Fig. 1A 45 bony 45 morphologically 45 indentations 44 gently curved 44 umbilicus 44 apelike 44 setae 44 wattles 44 contralateral 44 otoliths 44 greenish brown 44 stamen 44 theropod 44 convex 44 knobby 44 protrusion 44 anuses 44 olfactory receptors 44 Hox genes 44 molars 43 featherless 43 stickleback