58 



Illinites, both at less than 1 percent, made 

 up the remainder of the spore population. 



Continuing upward in the overlying gray 

 shale (maceration 1122-G), Punctatis pontes 

 (40.3 percent) and Endosporites (5.3 per- 

 cent) showed a decline in comparison with 

 their appearance in the underlying coaly 

 shale, while Florinites and Granulatis pontes 

 reached their maxima of 17 percent and 13.3 

 percent, respectively. Laevigatos pontes (4.7 

 percent), Lycospora (3.0 percent), Secari- 

 sporites (4.3 percent), Calamospora (3.3 per- 

 cent), Raistrickia (2.3 percent), and Lund- 

 bladispora (2.0 percent) were fairly com- 

 mon. Wilsonites, Illinites, Convolutispora, 

 Ahrensis pontes, Latipulvinites, Gravis pontes, 

 Crassispora, Indospora, and Densosporites 

 were sparsely represented. 



Crassispora increased very conspicuously 

 to 62 percent and became the most abundant 

 genus in a fossiliferous limestone (maceration 

 1122-J). Endosporites also showed a sharp 

 increase, to 29 percent, while Punctatis pontes 

 declined sharply to its observed minimum of 

 7.7 percent. Florinites, Calamospora, Laevi- 

 gatosporites, Cirratriradites, Knoxis pontes, 

 Gravis pontes, and Pityosporites were rela- 

 tively rare. 



In the underclay (maceration 1122-0) 

 below the middle coal of the sequence, 

 Punctatis pontes (57.3 percent) was followed 

 in abundance by Calamospora, which reached 

 its maximum abundance for the section at 

 22.3 percent. Gravisporites also showed a 

 sharp increase to 18 percent and was third 

 in occurrence. Granulatis pontes (1.7 per- 

 cent) , Endosporites, Triquitrites, Laevigato- 

 sporites, and Vesicaspora infrequently oc- 

 curred in the small spore assemblage. 



The middle coal (maceration 1122-P) was 

 characterized by a decrease in Punctatispo- 

 rites (46.8 percent), Calamospora (10.8 per- 

 cent) , and Gravisporites ( < 1 percent) . En- 

 dosporites (14.6 percent), Crassispora (10.8 

 percent), and Laevigatos pontes (5.4 percent) 

 were present in considerable proportions. 

 Cadiospora (3.8 percent), Florinites (1.4 

 percent), Granulatis pontes (1.8 percent), 

 Triquitrites, Raistrickia, Pityosporites, and 

 Vesicaspora were minor spore constituents 

 in the coal. 



The thick sandstone (maceration 1122-Q) 

 overlying the middle coal had a spore as- 



semblage composed predominantly of Punc- 

 tatisporites (66.7 percent), Laevigatosporites 

 (11.7 percent), Calamospora (7.7 percent), 

 Granulatis pontes (5.3 percent), and Flori- 

 nites (2.3 percent). Other genera included 

 Lycospora, Raistrickia, Triquitrites, Ahrensi- 

 sporites, Gravisporites, Crassispora, Secari- 

 sporites, Lundbladispora, Trivolites, Endo- 

 sporites, Wilsonites, Illinites, Pityosporites, 

 Strotersporites, Lueckis pontes, and Potoniei- 

 sporites. 



In the underclay (maceration 1122-S) of 

 the upper coal, Punctatis pontes and Laevi- 

 gatosporites w r ere only slightly less abundant 

 than in the sandstone — 45.7 percent and 23.3 

 percent, respectively. Gravisporites reached 

 its greatest peak for the section with 20.3 

 percent of the total spore population, and 

 Crassispora was a significant constituent with 

 5.7 percent. Florinites (2.3 percent), Endo- 

 sporites (1.3 percent), Calamospora, Granu- 

 latisporites, Latipulvinites, and Triquitrites 

 made up the rest of the spore population. 



In the top coal (maceration 1122-T), 

 Punctatis pontes (52.4 percent) was followed 

 in abundance by Laevigatosporites , which 

 reached its maximum abundance for the sec- 

 tion at 32.6 percent. Calamospora (7.4 per- 

 cent) and Cadiospora (3.4 percent) were 

 third and fourth in occurrence, followed by 

 Crassispora (2.0 percent). Gravisporites, 

 Triquitrites, Raistrickia, Granulatis pontes, 

 Endosporites, Florinites, Wilsonites, Pityospo- 

 rites, and Vesicaspora were each less than 1 

 percent of the total small spore assemblage. 

 - Punctatis pontes (72.7 percent) was by far 

 the most dominant genus in the gray cal- 

 careous uppermost shale sample (maceration 

 1122-Z). Endosporites and Florinites in- 

 creased significantly to 10.7 percent and 7.7 

 percent, respectively, while Laevigatosporites 

 (1.7 percent) and Calamospora (2.0 percent) 

 declined sharply. Gravisporites, Granulati- 

 sporites, Triquitrites, Crassispora, Raistrickia, 

 Reticulatisporites, Convolutispora, Potoniei- 

 s pontes, Wilsonites, Illinites, Pityosporites, 

 Vesicaspora, Vcstigisporites, Strotersporites, 

 and Hamiapollenites were minor constituents 

 of the small spore population. 



CONCLUSIONS 



The variety and relative abundance of 

 small spore genera and species of the upper 



