borne by small lycopods, make up most of the remain- 

 ing spore assemblage in maceration 3059. 



Maceration 2247B (site 14), which contains rare 

 specimens of Botryococcus, is from the upper of two coal 

 beds in Daviess County, Indiana, which Guennel (sam- 

 ple site 58a, 1958) reported as the Upper Block Coal 

 Member. Hutchison (1971) mapped the coal as an un- 

 named coal in the Mansfield Formation. Spore analysis 

 of the coal indicates that it is probably equivalent to the 

 St. Meinrad Coal Member, which is in the Mansfield 

 Formation. Its spore assemblage is diverse, but 97% of 

 the spores are Lycospora. 



Unnamed Coal Bed (Illinois) 



The coaly shale that crops out just above a pebbly 

 sandstone at site 25 (table 1) is probably early Atokan in 

 age and a little younger than the Bell Coal. The coal 

 contains rare specimens of Botryococcus, and its spore 

 assemblage is greatly dominated (88.5%) by Lycospora. 



Mariah Hill Coal Member (Indiana) and 

 Dunbar Coal Bed (Kentucky) 



Algae are common at site 43 of the Mariah Hill Coal 

 Member in Spencer County, Indiana, along the bluff of 

 the Ohio River (table 1, fig. 2). The location is the same 

 as sample site No. 943-1, 2 of Cooper (1946) and site 30 

 of Shaver and Smith (1974), who studied ostracodes 

 from overlying shale just below the Ferdinand Lime- 

 stone (now part of the Lead Creek Limestone Member). 

 The Dunbar coal bed in Kentucky, which correlates to 

 the Mariah Hill Coal, contains only rare specimens of 

 Botryococcus at site 40, about 1 mile southwest of Mor- 

 gantown. Both samples are dominated by Lycospora. 

 Radiizonates difformis and R. rotatus, both borne by her- 

 baceous lycopods, are fairly common. 



Tarter Coal Member (Illinois) and Lower Block 

 Coal Member (Indiana) 



Kosanke (1951) described a boghead coal in the upper 

 few centimeters of the Tarter Coal Member at site 7 in 

 Fulton County. He reported about 33% algae and 24% 

 anthraxylon (vitrinite) on the basis of his study of thin 

 sections. Botryococcus was not observed in the coal below 

 the top few centimeters (maceration 1923). Boghead 

 algae are common in the Tarter Coal at site 8, the type 

 section of the coal, which is only about 2.4 km southeast 

 of the coal at site 7. Maceration 2278C (site 5), which 

 contains rare specimens of Botryococcus, is also from 

 Fulton County and represents the Tarter Coal where it 

 is only 10.2 cm thick. Maceration 1973 of a 12.7-cm-thick 

 previously unnamed coal, which contains rare speci- 

 mens of Botryococcus, is from a core drilled at site 11 

 near Cayuga, Vermillion County, Indiana. The great 

 abundance of Lycospora (72.5%) and the presence of 

 Zoster osporites, Endosporites zonalis, and Radiizonates dif- 

 formis indicate that this coal is equivalent to the Lower 

 Block Coal. 



Hermon Coal Member (Illinois) 



Algae are rare in the Hermon Coal Member, which is 

 1.5 m above the Seville Limestone Member at site 4 in 

 Warren County, Illinois. The spore assemblage is di- 

 verse and mostly composed of fern and sphenopsid 

 spores and only 1% Lycospora. Botryococcus is also rare 

 at site 1 (Rock Island County), where the coal is about 

 0.6 m above the Rock Island (No. 1) Coal Member. 



Brush Coal Member (Illinois) 



Botryococcus is very abundant in the Brush Coal Mem- 

 ber at site 2 in Warren County. The coal is only 3.8 cm 

 thick and about 0.9 m above the Hermon Coal (fig. 3). 

 Because the spore assemblage in maceration 1865 is 

 very poorly preserved, composition of the coal swamp 

 flora could not be determined. Botryococcus is very rare 

 in the Brush Coal at site 3 in Knox County. The spore 

 assemblage is dominated by Lycospora (52%), but fern 

 spores (36%) are well represented. The alga is also rare 

 in a core sample of the coal at site 6 in Fulton County. 

 The spore assemblage in the coal, which is only 12.7 cm 

 thick, is greatly dominated by Lycospora (75%). 



Buffaloville Coal Member (Indiana) and 

 Lewisport Coal Bed (Kentucky) 



A coal about 10.2 cm thick from a core drilled at site 10 

 near Cayuga, Indiana, is tentatively correlated with the 

 Buffaloville Coal Member. Algae are rare in the coal 

 that is dominated by Lycospora (52%). Botryococcus is 

 also rare in three samples of the Lewisport coal in Ken- 

 tucky, which correlates with the Buffaloville Coal. In 

 maceration 1799 of the coal near Mining City, Lycospora 

 makes up 45% of the spore assemblage, and fern spores 

 account for 26%. Botryococcus is rare in the Lewisport 

 coal at sites 37 and 38. The coal in the Black Gold Mine 

 at site 37 in Christian County contains more fern spores 

 (46.5%) than Lycospora (21%). Fern spores account for 

 half the spore assemblage in the coal from the high wall 

 of the Whittington Mine at site 38. 



Algae are very abundant in the Lewisport coal at 

 sites 35 and 41 in Union and Ohio Counties. The under- 

 clay and overlying shale at site 35 also contain Botryo- 

 coccus and will be discussed later. Maceration 2180A 

 from the 23-cm-thick Lewisport coal at site 41 is domi- 

 nated by spores produced by lycopods: 32.5% Lycospora 

 and 20% Granasporites medius (fig. 4). 



Bancroft?) Coal Bed (Kentucky) 



Botryococcus is rare in a coal tentatively correlated with 

 the Bancroft coal bed. The coal (maceration 2180B) at 

 site 41 is overlain by cherty limestone and is about 3 m 

 above the Lewisport coal, which contains abundant 

 algae. 



Delwood Coal Bed (Illinois) and Equivalent 

 Coal in Kentucky 



Botryococcus was observed in the Delwood Coal Bed 

 and equivalent coals at 14 sites (table 1). It is abundant 



