Joyce, Walter G. (2003). "A new Late Jurassic turtle specimen and the taxonomy of Palaeomedusa testa and Eurysternum wagleri" (PDF). PaleoBios. 23 (3): 1–8. Archived from the original (PDF) on October 1, 2015. Pterosaurs had thin skin membranes strung over the extended fingers of the wings, similar to bats. They had a long fourth finger which extended their wing (but still only three toes on the feet). Their brains were farther developed than dinosaurs of the same size. They had exceptional sight and could receive sensory stimuli from their wings to assist in navigating and hunting.

While on the ground, pterodactylus walked on all fours, rather than bouncing around on its hind feet like today’s birds. Andres, B.; Myers, T. S. (2013). "Lone Star Pterosaurs". Earth and Environmental Science Transactions of the Royal Society of Edinburgh. 103 (3–4): 383–398. doi: 10.1017/S1755691013000303. S2CID 84617119. Brandalise de Andrade, Marco; Young, Mark T. (2008). "High diversity of thalattosuchian crocodylians and the niche partition in the Solnhofen Sea". The 56th Symposium of Vertebrate Palaeontology and Comparative Anatomy: 14–15. Archived from the original on June 3, 2011. Brougham, Henry P. (1844). "Dialogues on instinct; with analytical view of the researches on fossil osteology". Knight's Weekly Volume for All Readers. 19. Letters of J. R. R. Tolkien, #100 to Christopher Tolkien, May 29, 1945, expressing his "loathing" for the Royal Air Force: "My sentiments are more or less those that Frodo would have had if he discovered some Hobbits learning to ride Nazgûl-birds, 'for the liberation of the Shire'."

Quetzalcoatlus was abundant in Texas during the Lancian in a fauna dominated by Alamosaurus. [17] The Alamosaurus- Quetzalcoatlus association probably represents semi-arid inland plains. [17] Quetzalcoatlus had precursors in North America and its apparent rise to widespreadness may represent the expansion of its preferred habitat rather than an immigration event, as some experts have suggested. [17] It co-existed with another azhdarchid known as Wellnhopterus, as well as an additional pterosaur taxon, suggesting a relatively high diversity of Late Cretaceous pterosaur genera. [18] [1] Feeding [ edit ] Artist's impression of a group of Quetzalcoatlus feeding on the ground

a b Bennett, S.C. (2002). "Soft tissue preservation of the cranial crest of the pterosaur Germanodactylus from Solnhofen". Journal of Vertebrate Paleontology. 22 (1): 43–48. doi: 10.1671/0272-4634(2002)022[0043:STPOTC]2.0.CO;2. JSTOR 4524192. S2CID 86308635. By 2001, there were four Pteranodon adults and six juveniles living in the Isla Sorna Aviary. At some point, the family encountered a human as evident by the human remains in the nest in Jurassic Park III. [6] It is unknown who this person was and if they were even alive when the Pteranodons found them. a b Lawson, Douglas A. (1975). "Pterosaur from the Latest Cretaceous of West Texas: Discovery of the largest flying creature". Reports. Science. 187 (4180): 947–948. Bibcode: 1975Sci...187..947L. doi: 10.1126/science.187.4180.947. PMID 17745279. S2CID 46396417. Pterodactylus (from Greek pterodáktylos ( πτεροδάκτυλος) meaning 'winged finger' [2]) is an extinct genus of pterosaurs. It is thought to contain only a single species, Pterodactylus antiquus, which was the first pterosaur to be named and identified as a flying reptile and one of the first prehistoric reptiles to ever be discovered. At first, it was assumed that the smaller specimens were juvenile or subadult forms of the larger type. Later, when more remains were found, it was realized they could have been a separate species. This possible second species from Texas was provisionally referred to as a Quetzalcoatlus sp. by Alexander Kellner and Langston in 1996, indicating that its status was too uncertain to give it a full new species name. [6] The smaller specimens are more complete than the Q. northropi holotype, and include four partial skulls, though they are much less massive, with an estimated wingspan of 5.5m (18ft). [7] This species was named Q. lawsoni in 2021, named after the genus' original describer. [1]The first Pterosaurs appeared around 210 million years ago, in the late Triassic Period. They were the Rhamphorhynchoids. They had long thin tails, and shorter wrist bones and narrower wings than Pterodactyloids.