1. How many different kinds of dinosaurs1 were there?
There is no official list of dinosaur species, but we can give approximate numbers. The number of named genera is more than 900,2 but it is uncertain how many are valid. Some fossils are too incomplete to make a secure identification, and occasionally someone discovers that different fossils with different names turn out to be of the same kind of dinosaur.3 Many genera, perhaps half, are represented by only a single specimen, while ten species, such as Maiasaura, are known from at least 40 specimens.4 The number of different kinds of dinosaurs known keeps increasing as new fossils are found. Thus, no fixed number can be given for the different types of dinosaurs, but it is at least several hundred. Dinosaurs were diverse in size and other characteristics. They ranged in length from the size of a pigeon (25 cm, 10 in)5 to 30 m (100 ft) or more.6 Some were vegetarians, while others were predators. Some were bipedal while others were walked on all four feet. The greatest diversity of dinosaurs is found in the uppermost Cretaceous rocks (Maastrichtian), after which point they disappear from the fossil record.7 Several extinct types of fossil reptiles are sometimes wrongly thought to be dinosaurs. These include the pterosaurs, which were flying reptiles, and several kinds of marine reptiles, such as the ichthyosaurs, plesiosaurs, mososaurs and nothosaurs.
2. Are human and dinosaur fossils found together?
No. There have been unsubstantiated reports of human and dinosaur fossils in the same place, but none of them has been confirmed. There was a claim that human and dinosaur footprints were found together in the riverbed of the Paluxy River of Texas, but this claim has been refuted. The dinosaur footprints are genuine, but the human footprints are not.8
3. Were there any dinosaurs on the ark?
4. What did dinosaurs eat?
5. Were dinosaurs warm-blooded?
6. Did God create the dinosaurs, or are they the result of evil?
7. Do scientists believe that birds evolved from dinosaurs?
8. What unsolved questions about dinosaurs are of greatest interest?
 For additional information see Esperante, R. 1011. How do dinosaurs fit in a biblical perspective? In Gibson, LJ and Rasi, HM, eds., Understanding Creation, Nampa, ID: Pacific Press, 158-166.
 An estimate in 2006 was 527 known genera: Wang, S.C. and P Dodson (2006). Estimating the diversity of dinosaurs. Proceedings of the National Academy of Sciences USA 103(37):13601-13605.Wikipedia article “List of Dinosaur Genera” has a list of about 960 dinosaur genera, some of which are probably not valid: https://en.wikipedia.org/wiki/List_of_dinosaur_genera
 See e.g., Hedrick BP and P Dodson (2013). Lujiatun psittacosaurids: understanding individual and taphonomic variation using 3D geometric morphometrics. PLoS One 8(8): e69265. Doi: 10.1371/journal.pone.0069265
 Dodson, P. (1990). Counting dinosaurs. How many kinds were there? Proceedings National Academy of Sciences USA 87:7608-7612.
 Zhang, Fucheng, et al. A bizarre Jurassic maniraptoran from China with elongate ribbon-like feathers. Nature 455:1105-1108 (23 October 2008).
 Burness, GP, J Diamond and T Flannery. Dinosaurs, dragons and dwarfs: The evolution of maximal body size. Proceedings of the National Academy of Science, USA 98(25):14518-14523.
 Archibald, JD and DE Fastovsky. “Dinosaur extinction,” in Weishampel, DB, P Dodson, and H Osmolska, eds. The Dinosauria. Berkeley: University of California Press (2004; 672-684).
 Fastovsky, DE and JB Smith. “Dinosaur paleoecology,” in Weishampel, DB, P Dodson, and H Osmolska, eds. The Dinosauria. Berkeley: University of California Press (2004; 614-626).
 Chinsamy, A and WJ Hillenius. “Physiology of nonavian dinosaurs,” in (Weishampel, DB, P Dodson, and H Osmolska, eds.) The Dinosauria. Berkeley: University of California Press (2004; 643-659).
 Genesis 6:12-13.
 Feducia, A. Riddle of the Feathered Dragons: Hidden Birds of China. Yale University Press (2012)
 (a) Martin LD. 1991. Mesozoic birds and the origin of birds. In: Schultze H-P, Trueb L, editors. Origins of the Higher Groups of Tetrapods. Ithaca and London: Comstock Publishing Associates, Cornell University Press, p 485-540; (b) Tarsitano S. 1991. Ibid, p 541-576; (c) Jones TD. 2000. Nonavian feathers in a Late Triassic archosaur. Science 288:2202-2205
 Information on Archaeopteryx is found in many references, such as: (a) Carroll RL. 1988. Vertebrate Paleontology and Evolution. London: WH Freeman. The Chinese fossils are discussed in various papers, e.g.: (b) Qiang J, Currie PJ, Norell MA, Shuan J. 1998. Two feathered dinosaurs from northeastern China. Nature 393:753-761; (c) Stokstad E. 2000. Feathers, or flight of fancy? Science 288:2124-2125.