——., Betty L. Hackner and Alexandra Bartlett. 1967. Mangrove 
pollen at the depositional site of Oligo-Miocene amber from Chia- 
pas, Mexico. Harvard Univ. Bot. Mus. Leaflets 21 (10): 289-324. 
Langenheim, R.L., C.J. Smiley and Jane Gray. 1960. Cretaceous 
amber from the arctic coastal plain of Alaska. Bull. Geol. Soc. 
Am. 71: 1345-1356. 
——., J.D. Buddhue and George Jelinek. 1965. Age and occurrence 
of the fossil resins Bacalite, Kansasite, and Jelinite. Jour. Paleo. 
39 (2): 283-287. 
Lengweiler, W. 1939. Minerals in the Dominican Republic. Rocks 
and Minerals 14: 212-213. 
Licari, R. 1960. Geology and amber deposits of the Simojovel area, 
Chiapas, Mexico. Unpub. thesis, M.A., Dept. of Geol., Univ. of 
Calif., Berkeley. 
Little, Homer. 1917. The geology of Anne Arundel County. Mary- 
land Geol. Survey (Ann Arundel County): 57-117. 
McAlpine, J.F. and J.E.H. Martin. 1966. Sytematics of Sciado- 
ceridae and relatives with description of two new genera and species 
from Canadian amber and erection of family Ironomiidae (Diptera: 
Phoroidea). The Canadian Entomologist 98 (5): 527-544. 
Mirov, N.T. 1961. Composition of gum turpentines of pines. USDA 
For. Serv. Tech. Bull. 1239. 
——. 1967. The genus Pinus. Ronald Press, N.Y. 602 pp. 
Morton, S.G. 1830. Synopsis of the organic remains of the Ferru- 
ginous Sand Formation of the United States, with geological re- 
marks. Am. Jour. Sci. 17: 274-295. 
Paclt, J. 1953. A system of caustolites. Ischermaks Miner. u. Pet- 
rog. Mitt. Bd. 3, H. 4: 332-347. 
Penny, J.S. 1947. Studies on the conifers of the Magothy flora. 
Am. Jour. Bot. 34: 281-296. 
Richards, W.R. 1966. Systematics of fossil aphids from Canadian 
amber (Homoptera: Aphididae). The Canadian Entomologist 98 
(1): 746-760. 
Ross, H.H. 1956. The Cretaceous Caddis fly, Dolophilus praemissus 
Cock. Proc. 10th Inter. Congress Entomol. 1: 849. (Abst.) 
Sample, C.G. 1905. Amber in Santa Domingo. Engineering and 
Mining Jour. 80: 250-251. 
Sanderson, H.W. and T.H. Farr. 1960. Amber with insect and plant 
inclusions from the Dominican Republic. Science 131: 1313. 
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