Amniote, Carnivore, Cloaca, Cranial kinesis, Ectothermic, Family (biology), Genus, Hydrophiinae, Jurassic, Legless lizard, Leptotyphlops carlae, Lung, Mega annum, Paleocene, Pelvic girdle, Python reticulatus, Reptile, Scale (zoology), Skulls, Snake, Species, Squamata, Suborder, Titanoboa cerrejonensis, Vertebrate, Vestigial