VOLUME 44, 1999
$25.00
Cifelli, R. L. and Gordon, C. L., Symmetrodonts from the Late Cretaceous of Southern Utah, and Comments on the Distribution of Archaic Mammalian Lineages Persisting into the Cretaceous of North America, p. 1-15, 7 figures, 3 tables.
Church, S. B., Rigby, J. K., Gunther, L. F., and Gunther, V. G., A Large Protospongia Hicksi Hinde, 1887, from the Middle Cambrian Spence Shale of Southeastern Idaho, p. 17-25, 5 figures.
Nicoll, R. S., Miller, James F., Nowlan, G. S., Repetski, J. E., and Ethington, R. L., Iapetonudud (N.gen.) and Iapetognathus Landing, Unusual Earliest Ordovician Multielement Conodont Taxa and Their Utility for Biostratigraphy, p. 27-101, 23 plates, 5 tables, 2 figures.
Rigby, J. K., Linford, C. B., and LeMone, D. V., Sponges from the Ibexian (Ordovician) McKelligon Canyon and Victorio Hills Formations in the Southern Franklin Mountains, Texas, p. 103-133, 5 plates, 2 figures.
Rigby, J. K., and Myrow, P. M., Lower Ordoviaian Sponges from the Manitou Formation in Central Colorado, p. 135-153, 3 plates, 3 figures.
Rigby, J. K., and Hanger, R. A., Sponges from the Middle Permian Quinn River Formation, Bilk Creek Mountains, Humboldt County, Nevada, p. 155-160, 3 figures.