16 CRETACEOUS AND TERTIARY FISH. 



soft. The quartz and quartzites are often more or less corroded. 

 The formation occurs as isolated remnants on some of the high- 

 est hills of the coastal plain. It is perhaps to be correlated with 

 the Lafayette formation farther south. 



CORRELATION OF LOCALITIES FURNISHING FISH REMAINS. 



The fossils described in this report so far as any definite 

 localities are given were obtained from comparatively few points. 

 The same names recur again and again. Long Branch, 

 Deal, Poplar, Shark River, Farmingdale, Hornerstown, Cross- 

 wicks, Pemberton, Birmingham, Vincentown, Blackwoodstown, 

 Barnsboro, Mullica Hill, Allowaystown, Shiloh, and Stow Creek 

 are frequently mentioned. At some of these localities the geo- 

 logical formation can be identified with certainty, while at others 

 several formations outcrop in the pits from which the specimens 

 probably were obtained so that there is some element of doubt. 

 The following paragraphs indicate the possibilities at each local- 

 ity. 



Long Branch. — The Hornerstown marl outcrops north of 

 Long Branch and at an early day was dug at several points. 

 South of that place it is covered by the Vincentown sand (Cook's 

 yellow sand), but was reached in pits at a few localities. Speci- 

 mens labelled Long Branch are assumed to come from the 

 Hornerstown marl. 



Deal and Poplar. — The numerous marl pits along Poplar 

 Brook near Poplar and Deal are in the Manasquan marl — the 

 green marl and ash marl of Cook's Upper Marl. South of Deal, 

 however, near the head of the north arm of Deal Lake the 

 Shark River (Eocene) marl is found. It seems to be safe to 

 conclude that specimens from Poplar are to be regarded as from 

 the Manasquan marl, while those from Deal may be either from 

 the Manasquan marl or the Shark River marl with chances per- 

 haps favoring the former since the pits in the Manasquan were 

 more numerous than those in the Shark River. 



Shark River. — 'Eocene beds — the Shark River marl — are ex- 

 posed in pits along Shark River above the village of that name. 

 Some of these pits penetrated also the Manasquan marl, while 



