a E EENE E eerie 
1891.] Geology and Paleontology. 653 
collected by Mr. Charles Cullen at Gosford, New South Wales. The 
series comprises nearly four hundred specimens obtained from a layer 
of dark-gray shale, four feet thick, interstratified with the massive beds 
of sandstone belonging to the Hawkesbury formation. As. a result of 
Mr. Woodward’s researches, they have been classified as follows: One 
Dipnoan, possibly allied to Ceratodus, Gosfordia truncata. Of the 
family Paleoniscide, Myriolepis clarkei, M. latus, Apateolepis aus- 
tralis; of Catopteridæ, Dictyopyge symmetricus, D. tllustrans, D. 
robustus ; of Belonorhynchidæ, Belonorhynchus gigas, B. gracilis ; of 
Semionotidæ, Semionotus australis, S. tenuis, Pristisomus gracilis, P. 
atus, P. crassus, Cleithrolepis granulatus, C. ? altus; of Pholido- 
poridæ, Pholidophorus gregarius, ? Peltopleurus dubius. All the 
species are new except, M. clarkei and C. granulatus. Of the enrm 
Gosfordia, Apateolepis, and Pristisomus are new. 
An examination of this list at once demonstrates that the piia is 
of early Mesozoic age, and Mr. Woodward regards the Hawkesbury 
beds as homotaxial with the Keuper of Europe, or, at the latest, with 
the Rhætic. An important fact leading to this conclusion is the 
absence in this series of fishes with well-developed vertebral centra. 
Ten plates accompany the text, from which one learns how much 
good work can be done with very fragmentary fossils. 
A Cimoliosaurus from the Niobrara Cretaceous of Kan- 
sas.—Prof. Williston has recently described a Cimioliosaurus from the 
chalk of Western Kansas, which is of interest by reason of the nature 
and preservation of the remains. The specimen comprises the skull 
and twenty-eight cervical vertebræ, all attached, and with their relative 
_ positions but little disturbed. The entire length of the skull is about 
gpineteen inches, its greatest height about nine inches. It is evident 
thas the skull was a long and narrow one, quite similar to that of 
Plesiosaurus conybeari Sollas. Prof. Williston describes for the first 
time the teeth of an American species. 
Plistocene Subsidence versus Glacial Bana Pot Ly. 
Spencer’s studies of the old shore-lines, such as beaches, terraces, and 
sea-cliffs, in the northeastern part of North America, lead him to think 
that these shores were constructed at sea-level, and not moulded in 
glacial lakes. Under these conditions it is necessary to accept a great 
subsidence of the continent, in later Plistocene times, to nearly 2,700 
feet in Western Pennsylvania. He also cites foreign examples to show 
that these continental move vements are not peculiar to America, b 
that the record of subsidence ma read in the  Barbadoes, in Asia, a 
and in Europe. fleas Geol. Surv. Am. Vol. IL, pp- 465-476, pl. 19.) 





