Scudder — Fossil Insects of North America. 



173 



Compact sandstone and coarse shales 



No fossils 1 3 ft. 



♦• Plant Bed No. 7." Shales, variable 

 in character, generally grey and 

 compact, but sometimes light- 

 brownish or even black, fissile, 

 and soft 



Very rich in plants : Cordaitts, Ca- 

 lamites (two sp.), Asterophi/llites, 

 Annularia, Tinnularia, Psilophy- 

 ton, Neuropteris, Cyclopteris, Sphe- 

 nopteris, Hymenophyllites, Cardio- 

 carpon (three sp.), Aletkopteris, 

 and Pecopteris (three sp.). In- 

 sects : Platephemera antiqua 



2 ft. 



Sandstone and coarse shales 



Abundance of plant-remains, prin- 

 cipally Cordaites and Calamites 



5 ft. 



"Plant Bed No. 6." {a) Coarse 

 shale of a greenish -grey colour; 

 [b) soft, very friable shale ; (J) 

 coarse shale ; (d) fine-grained and 

 light- coloured shale 



{a) Pecopteris (two sp.), CordaiteSy 

 Calamites^ Neuropteris, Cardiocar- 



pon (two sp.) ; {b) few fossils ; 

 (c) Cordaites, and stems of plants ; 

 {d) Cordaites and Calamites 



2 ft. 



Compact flaggy sandstones and 

 coarse shales 



Few plants 



8 ft. 



"Plant Bed No. 5." Soft, fine- 

 grained, light-greenish shale 



Cordaites, Calamites, Psilophyton, 

 Asterophyllites, Pecopteris (two 

 sp.), Sphenopteris, Hymenophyl- 

 lites and Neuropteris — also Spi- 

 rorbis 



6 in. 



Sandstone 



Obscure markings 



gift. 



" Plant Bed No. 4." Coarse shales 



Cordaites, Calamites, Neuropteris 

 (two sp.), Psilophyton, Pinnu- 

 laria, Cardiocarpon, and other 

 undetermined forms 



1ft. 



Sandstone and coarse shales 



Badly preserved remains 



ISf ft. 



Light-greenish, coarse shales 



Fern-stems, Cordaites, and obscure 

 markings. {Carpolithes ?) 



7 in. 



Sandstone and coarse shales 



Obscure markings 



5 ft. 10 in. 



Sandstone and shales 



Calamites and Cordaitet 



9 in. 



Sandstones 



No fossils 



4 ft. 10 in. 



Shales 



Obscure remains of plants 



2^ in. 



Sandstones 





2ift. 



Soft shale and fissile sandstone 



Calamites 



3^ in. 



Coarse sandstone 



Sternbergice and Calamites 



Calamites (two sp.),Asterophyllifes, 

 Annularia, Pinnularia, Psilophy- 

 ton (two sp.), Cordaites, Cyclop- 

 teris, Neuropteris, Sphenopteris 

 (two sp.), Pecopteris, and Cardio- 

 carpon (two sp.) 



6ift. 



"Plant Bed No. 3." Black and 

 lead - coloured shales, compact 

 above, crumbling below, traversed 

 by thin quartz veins 



10 in. 



