Part 3

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.

LITERATURE CITED

ALDINGER, H.

1931. Ueber karbonische Fische aus Westfaelen. Paleont. Zeit., 13:186-201.

BERG, L. S.

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.)

FIEGE, K.

1951. Eine Fisch-Schwimmspur aus dem Culm bei Waldeck. Neues Jahrb. Geol. and Palaeont. Jahrgang 1951:9-31.

HIBBARD, C. W.

1933. Two new species of _Coelacanthus_ from the middle Pennsylvanian of Anderson County, Kansas. Kansas Univ. Sci. Bull., 21:279-287.

KELLER, G.

1934. Fischreste aus dem oberkarbon des Ruhrgebiets. Gluckauf, 70:913-917.

MOORE, R. C., ELIAS, M. K., and NEWELL, N. D.

1936. A "Permian" flora from the Pennsylvanian rocks of Kansas. Jour. Geol., 44:1-31.

MOY-THOMAS, J. A.

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.

PEABODY, F. E.

1952. _Petrolacosaurus kansensis_ Lane, a Pennsylvanian reptile from Kansas. Kansas Univ. Paleont. Contrib., 1:1-41.

REIS, O. M.

1888. Die Coelacanthinen mit besonderen Beruecksichtigung der im Weissen Jura Bayerns verkommenden Arten. Palaeontographica, 35:1-96.

SCHAEFFER, B.

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.

SCHAEFFER, B., and GREGORY, J. T.

1961. Coelacanth fishes from the continental Triassic of the western United States. Amer. Mus. Novitates, 2036:1-18.

SCHAEFFER, B., and ROSEN, D. E.

1961. Major adaptive levels in the evolution of the actinopterygian feeding mechanism. Am. Zool., 1:187-204.

SMITH, J. L. B.

1939. A living coelacanthid fish from South Africa. Trans. Roy. Soc. South Africa, 28:1-106.

STENSIOe, E. A.

1921. Triassic fishes from Spitzbergen. Part I. Vienna, Adolf Holzhausen: 1-307.

1932. Triassic fishes from East Greenland. Meddel. om Gronland, 38:1-305.

TCHERNAVIN, V. V.

1948. On the mechanical working of the head of bony fishes. Proc. Zool. Soc. London, 118:129-143.

WEHRLI, H.

1931. Die Fauna der Westfaelischen Stufen A und B der Bochumer Mulde zwischen Dortmund und Kamen (Westfaelen). Palaeontographica, 74:93-134.

_Transmitted March 29, 1962._