1598 



TRANSACTIONS OF WAGNER 



TERTIARY FAUNA OF FLORIDA 



Chione erosa Dall, J. 

 Chione cortinaria Rogers, J. 

 Lirophora ulocyma Dall, A, J. 

 Lirophora xesta Dall, A. 

 *Lirophora latilirata Conrad, J. 

 *Timoclea grus Holmes, J. 

 Venus tridacnoides Lamarck, A, 

 *Parastarte triquetra Conrad, J. 

 Tellina sp., A. 

 Angulus acalyptus Dall, W. 

 Macoma alumensis Dall, A. 

 Semele alumensis Dall, A. 

 *Ensis directus Conrad, A. 



Ensis ensiformis Conrad, K. 

 Spisula marylandica Dall, W. 

 Mulinia congesta Conrad, A, D. 

 Mulinia Milesii Holmes, A. 

 Rangia clathrodonta Conrad, A. 

 Ervilia lata Dall, W. 

 Corbula nucleata Dall, A, W. 

 Corbula inaequalis Say, A. 

 Corbula heterogenea Guppy, A. 

 Panopea Goldfussi Wagner, A. 



Terebratula sp. ind., J. 

 Argyrotheca Schucherti Dall, J. 



THE DUPLIN MIOCENE OF NORTH CAROLINA. 



These beds were first brought to the attention of paleontologists by Mr. J. 

 T. Hodge in 1841,* from whose collections Conrad described a considerable 

 number of species. Mr. Frank Burns, of the United States Geological Survey, 

 under my direction visited the locality and made a thorough search at the lime- 

 stone sink known as the " Natural Well" and in the vicinity of the adjacent vil- 

 lage of Magnolia. A summary of what is known in regard to the geology of 

 the vicinity will be found in Bulletin 84, United States Geological Survey, pp. 

 72-3, 1892. Kerr and Emmons in their reports on the geology of North 

 Carolina have also referred to these beds in some detail. 



Mr. Burns obtained nearly three times the number of fossils which had been 

 previously known from this locality. A study of these indicates their general 

 parallelism with the upper or Yorktown Miocene of Virginia, with which their 

 deposition may have been partially synchronous. The fossil species are, how- 

 ever, largely distinct from those of the Yorktown beds and of a more tropical 

 aspect. It is probable that in Miocene times, as at the present day, there was 

 a difference in the marine faunas of the two regions, that at Yorktown and 

 Suffolk being more allied to the subjacent temperate fauna of the older Mio- 

 cene of Maryland and Virginia, while that in North Carolina contained more 

 southern types. Yet even this seems hardly sufficient to account for more than 

 part of the difference. It is probable that with the elevation of the Gulf and 

 Florida coasts, which closed the deposition of the cold-water Miocene on those 



* Am. Journ. Sci., 1st Ser., xli., pp. 335-344, 1841. 



