Loss of the basipterygoid processes in post-Carboniferous coelacanths may reflect the development of a more efficient feeding mechanism, by allowing the palatoquadrate complex and mandible to swing farther laterally and expand the oral cavity.
_Synaptotylus newelli_ (Hibbard) may have occupied either the sea or fresh water; these fishes occur in lagoonal deposits with reptiles and amphibians, arthropods, marine invertebrates and remains of land plants.
Because scale patterns on _Synaptotylus_ and _Rhabdoderma_ are so nearly similar and vary with size of the scale and its location on the fish, it is recommended that isolated scales not be assigned to a species, and to a genus only with great caution.
1931. Ueber karbonische Fische aus Westfälen. Paleont. Zeit., 13:186-201.
1940. Classification of fishes, both Recent and fossil. Moscow and Leningrad, 1940 (J. W. Edwards, Ann Arbor, Michigan, 1947, offset reproduction, pp. 1-345, 197 figs., plus English translation of text, pp. 346-517, 1947.)
1951. Eine Fisch-Schwimmspur aus dem Culm bei Waldeck. Neues Jahrb. Geol. and Paläont. Jahrgang 1951:9-31.
1933. Two new species of _Coelacanthus_ from the middle Pennsylvanian of Anderson County, Kansas. Kansas Univ. Sci. Bull., 21:279-287.
1934. Fischreste aus dem oberkarbon des Ruhrgebiets. Gluckauf, 70:913-917.
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1936. A "Permian" flora from the Pennsylvanian rocks of Kansas. Jour. Geol., 44:1-31.
1935. A synopsis of the coelacanth fishes of the Yorkshire Coal Measures. Ann. Mag. Nat. Hist., 15 (ser. 10): 37-46.
1937. The Carboniferous coelacanth fishes of Great Britain and Ireland. Proc. Zool. Soc. London, 107 (B): 383-415.
1952. _Petrolacosaurus kansensis_ Lane, a Pennsylvanian reptile from Kansas. Kansas Univ. Paleont. Contrib., 1:1-41.
1888. Die Coelacanthinen mit besonderen Berücksichtigung der im Weissen Jura Bayerns verkommenden Arten. Palaeontographica, 35:1-96.
1952. The Triassic coelacanth fish _Diplurus_, with observations on the evolution of the Coelacanthini. Bull. Amer. Mus. Nat. Hist., 99:art. 2, 29-78.
1953. _Latimeria_ and the history of the coelacanth fishes. New York Acad. Sci. Trans., (2) 15:170-178.
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