212 



bulletin: mltseum of comparative zoology. 



Encrinurus tmdtisegmentatus, Lichas laxatus, Tetradium wrangeli, 

 Atrypa imbricata, and Halysites parallclus are all typical species of the 

 Lyckholm. 



Miss Elsa Warburg 

 the region. 



Leptaena limestone 



Trinucleus shales 



Chasmops limestone 



Orthoceras limestone 

 30-50 m. 



Dalecarlia. 



(84), gives the following section as typical of 



Ceratopyge limestone 



Red Trinucleus shale 

 Gray limestone 

 Black Trinucleus shale 

 INIasur liniestone 



Macrourus limestone 

 Cystidean Is. 



Ancistroceras Is. 

 Chiron Is. 

 Platyurus Is. 

 Gigas Is. 

 Asaphus Is. 

 Limbata Is. 

 Planilimbata Is. 

 Ceratopyge Is. 

 Glauconite sand 



15 m. 



5-9 m. 



6 m. 



9-15 m. 



9 m. 

 15m.+ 



1 Upper gray Orthoceras 

 J limestone. 



Upper red limestone. 



Lower gray limestone. 

 Lower red limestone. 

 3.08 m. 



.14-. 16 m. 

 .10 m. 



Obolus conglomerate .15-.80 m. 



In Dalecarlia there is no Cambrian, the Obolus conglomerate resting 

 on the granite. It contains Obolus apoUinis and is followed by a thin 

 bed of greenish gray glauconitic clay-shale which contains some 

 fragments of Obolus. Above comes a thin bed of glauconitic limestone 

 which contains Obolus fragments and Lycophoria laevis StoUey. 

 This Wiman correlates with the Ceratopyge limestone on the basis 

 6i the latter fossil. 



At a single locality (Skattungbyn) Tornquist found in shales with 

 interbedded slabs of limestone, Tetragraptus scrra, T. quadribrachiatus, 

 Dichograptus octobrachiatus, Phyllograpius derisus, and three species 

 of Didymograptus. The limestone contained Pliomera tdrnquisti 

 Holm, Megalaspides dalecarlica, Ampyx pater, and Agnostus tdrnquisti 

 Holm. In general however, the Planilimbatakalk is present, followed 

 by the Limbata limestone. Megakispis planilimbata, M. limbata, 



