PLATE 11-11 



1 — Divisisporites ( ? ) sp., size 50 x 56 microns, Williamson Shale, Silurian, New York. 



2 — Undescribed spore, diameter 130 microns, Duvernay formation, Devonian, Alberta, 

 Canada. 



3 — Reinschospora sp., size 39 x 41 microns, Springer Shale, Lower Pennsylvanian, Oklahoma. 



4 — Florinites antiques Schopf, size 57 x 75 microns, Croweburg Coal, Middle Pennsylvanian, 

 Oklahoma. (Okla. Geol. Survey, Cir. 32) 



5 — Densosporites tenuis Hoffmeister, Staplin and Malloy, size 57 x 64 microns, Hardinsburg 

 formation, Upper Mississippian, Illinois and Kentucky. (Mississippian Plant Spores 

 from the Hardinsburg formation of Illinois and Kentucky; Jour. Paleontology v. 29) 



6 — Triquitrites additus Wilson and Hoffmeister, size 40 x 43 microns, Croweburg Coal, 

 Middle Pennsylvanian, Oklahoma. (Okla. Geol. Survey, Cir. 32) 



7 — Laevigatosporites ovalis Kosanke, size 32 x 46 microns, Croweburg Coal, Middle Penn- 

 sylvanian, Oklahoma. (Okla. Geol. Survey, Cir. 32) 



8 — Tripartites vetustus Schemel, diameter 43 microns, Hardinsburg formation, Middle 

 Pennsylvanian, Kentucky. (Jour. Paleontology, v. 29) 



9 — Alatisporites sp., overall diameter 83 microns, Tebo Coal, Middle Pennsylvanian, Kansas. 



10 — Schopfites col chest erensis Kosanke, diameter 78 microns, Croweburg Coal, Middle 

 Pennsylvanian, Oklahoma. (Okla. Geol. Survey, Cir. 32) 



11 — Raistrickia aculeolata Wilson and Hoffmeister, diameter 50 microns, Croweburg Coal, 

 Oklahoma. (Okla. Geol. Survey, Cir. 32) 



12 — Granulatisporites adnatus Kosanke ( ? ) , diameter 38 microns, Croweburg Coal, Middle 

 Pennsylvanian, Oklahoma. (Okla. Geol. Survey, Cir. 32) 



13 — Aneimia phyllitides, diameter 84 microns, Recent, Florida. 



14 — Dryopteris sp., size 24 x 41 microns, Recent, Massachusetts. 



15 — Cycas sp., size 19 x 38 microns, Recent, Florida. 



16 — Tsuga canadensis, diameter 80 microns, Pleistocene, Massachusetts. 



17 — Taxodium sp., length 38 microns, Pleistocene, Louisiana. 



18 — Picea glauca, length 88 microns, Pleistocene, Massachusetts. 



19 — Pinus banksiana, length 56 microns, Pleistocene, Massachusetts. 



20 — Carpinus sp., diameter 32 microns, Pleistocene, Massachusetts. 



21 — Tilia sp., diameter 35 microns, Calvert formation, Miocene, Virginia. 



22 — Nymphacea sp., size 31 x 60 microns, Pleistocene, Massachusetts. 



23 — Betula sp. (usually 3 pores), diameter 26 microns, Pleistocene, Wisconsin. 



24 — Andromeda glaucophylla, diameter 41 microns, Recent, Wisconsin. 



25 — Quercus sp., diameter 35 microns, Pleistocene, Massachusetts. 



26 — Carya sp., diameter 40 microns, Pleistocene, Wisconsin. 



27 — Chenopodium sp., diameter 27 microns, Calvert formation, Miocene, Virginia. 



28 — Nothofagus sp., diameter 25 microns, Miocene, Victoria, Australia. 



29 — Tricolporitae sp. (Bombaceae), diameter 55 microns, Eocene, Venezuela. 



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