234 ILLINOIS STATE ACADEMY OF SCIENCE 



The more calcareous layers in the lower part of the 

 section at Wilmington furnished" the species of fossils 

 listed below. In this list and those that follow the rela- 

 tive abundance of each species is indicated by the let- 

 ters r — rare, c — common and a — abundant, placed after 

 the name. If the species occurs in the Richmond strata 

 of Indiana, the particular formation of the Richmond in 

 which it is found in Indiana is indicated by the lettersA— 

 Arnheim; W — Waynesville; L — Liberty; Wh — White- 

 water; and E — Elkhorn, following the name in the lists. 



LIST OF FOSSILS FROM THE LOWER PART OF RICHMOND 

 STRATA AT WILMINGTON 



Anolotichia ponderosa Ulr. (a) 

 Anaphragma mirabile U. & B. (c) 

 Anaphragma mirabile n. var (r) 

 Arthroclerua angulare Ulr. (c) 

 Atactoporella cf. schucherti Ulrich (r) W. Wh. 

 Batostoma prosseri C. & G. (c.) W. L. 

 Batostoma variabile Ulr. (r) W. E. 

 Bythopora delicatula (Nich.) (r) W. L. Wh. 

 Bythopora meeki (James) (r) W. L. Wh. 

 Ceramoporella granulosa Ulr. (r) A. W. 

 Ceramoporella ohioensis (Nich) (r) Richmond 

 Ceramoporella whitei (James) (r) A. W. 

 Constellaria polystomella (Nich) (c) W. L. 

 Constellaria punctata (Whitfield) (c) 

 Crepipora hemispherica Ulrich (r) 

 Crepipora simulans Ulr. (r) 

 Cyclotrypa n: sp. (r) 

 Cyphotrypa stidhami (Ulr.) (c) Wh. 

 Cyphotrypa wilmingtonensis U. & B. (r) 

 Dicranopora emacerata (Nich.) (r) Richmond 

 Eridotrypa simulatrix (Ulr.) (c) W. 

 Favositella epidermata (Url.) (r-c) 

 Hallopora subnodosa (Ulrich) (r) Richmond 

 Helopora imbricata Ulr. (c) 

 Hemiphragma imperfectum (Ulr.) (aa) 

 Heterotrypa affinis (Ulr.) (c) 

 Heterotrypa prolifica Ulr. (r) W. 

 Heterotrypa singularis Ulr. (r) W. 

 Heterotrypa subramosa (Ulrich) (r) W. 

 Homotrypa cf. communis Bassler (r) W. L. 

 Homotrypa flabellaris Ulrich (r) W. L. Wh. 

 Homotrypa gelasinosa Ulr. (r) 

 Homotrypa cf. similis Foord (r) 

 Homotrypella rustica var. n. (c) 

 Mesotrypa orbiculata C. & G. (r) A. 

 Nicholsonella n. sp. (c) 

 Nicholsonella n. sp. (r-c) 

 Nicholsonella cumulata Ulr. (r) 

 Pachydictya elegans Ulr. (r-c) 

 Pachydictya fenestelliformis (Nich.) (a) W. L. 

 Pachydictya fenestelliformis corticula Ulrich (r) 

 Pachydictya firma Ulr. (a) 



