TETRAPODS OF THE PENNSYLVANIAN NODULES FROM MAZON CREEK, ILLINOIS

[1] BULMAN OMB, 1926, ZOOL SOC LONDON P, P533

[2] CASE EC, 1946, AM PHILOS SOC, V35, P325

[3] COPE ED, 1865, ACAD NAT SCI PHILADE, P134

[4] COPE ED, 1866, ILLINOIS GEOL SURVEY, V2, P135

[5] COPE ED, 1875, I OH GEOL SURV REP 2, P349

[6] COPE ED, 1868, ACAD NAT SCI PHILA P, P208

[7] Darlington P. J. Jr., 1948, Quarterly Review of Biology, V23, P1

[8] DARLINGTON P. J., 1948, QUART REV BIOL, V23, P105

[9] EARDLEY AJ, 1949, AAPG BULL, V33, P655

[10] ANCIENT ARCTICA [J]. JOURNAL OF GEOLOGY, 1948, 56 (05) : 409 - &

[1] BULMAN OMB, 1926, ZOOL SOC LONDON P, P533

[2] CASE EC, 1946, AM PHILOS SOC, V35, P325

[3] COPE ED, 1865, ACAD NAT SCI PHILADE, P134

[4] COPE ED, 1866, ILLINOIS GEOL SURVEY, V2, P135

[5] COPE ED, 1875, I OH GEOL SURV REP 2, P349

[6] COPE ED, 1868, ACAD NAT SCI PHILA P, P208

[7] Darlington P. J. Jr., 1948, Quarterly Review of Biology, V23, P1

[8] DARLINGTON P. J., 1948, QUART REV BIOL, V23, P105

[9] EARDLEY AJ, 1949, AAPG BULL, V33, P655

[10] ANCIENT ARCTICA [J]. JOURNAL OF GEOLOGY, 1948, 56 (05) : 409 - &