MUS. COMP. ZOOL 

 LIBRARY 



JAN 2 8 1960 



HARVARD 

 1 UNIVERSITY 



I. GOTLAND. 



Signification of letters, denoting the strata in which the fossils have 

 been found: 



a. Oldest red shale beds with Arachnophyllum, 



b. Shale beds with Stricklandinia lirata Sow. = Upper Llandovery. 



C. Shale beds of Northern Gotland, coeval with the sandstone! „r i u u i 



r o iL /-^ ii ] * — '' enJocK soaie. 



ot South Gotland j 



d. Bands of limestone and shale, in some parts oolite = Wenlock limestone. 



e. Pterytjotus and Palaeophonus beds, very thin, near Wisbyl „ ct ji 



•'^j , . ,1 S i-.- * -^ >=: Base of Ludlow, 



and also in other localities J 



f. Limestone beds composed of Crinoids and Corals = Aymestry? or Ludlow. 



g. Large banks of Megalomus and Tri-j = Upper Lndlow beds of England or 



merella > Lower Helderberg of the United 



h. Cephalopodan and Stromatopora beds) States. 



ARTHROPODA. 



Araclinoidea. 



Palaeophonus nuncius Thorell A Lindstrom e 



Crustacea. 



Trilobitae. 



Angelin. Palaeontologia Scandinavica, iterum emissa. Sthm 1878. 

 Lindstrom. Forteckning pa Gotlands Siluriska Crustaceer. 1. Trilobiter Ofver- 

 sigt af Vet. Ak. Forhandl. 1885, N:o 6. 



1. Phacops vulgaris Salter. C 



2. irabricatula Angelin - C — h 



3. obtusa Lm. c 



4. Downingia? Murchison. C — e 



5. quadrilineata Ang ab 



6. Musheni Salter - C — f 



7. Ohirurus speciosus Hisinger b — h 



8. conformis Ang c 



9. bimucronatus Murch. .. C 



10. gotlandicus Lm. f 



11. Sphaerexochus scabridus Ang b — h 



12. latifrons Ang. c 



13. laciniatus Lm C — h 



14. Bevriohi Lm ? 



