ee ———— ee 
TWENHOFEL: EXPEDITION TO THE BALTIC PROVINCES. 331 
dolomite in which the Eurypterus fauna is magnificently preserved. 
Eurypterids from here are Bunodes lunula Eichwald, B. rugosus Niesz- 
kowski, B. schrencki Nieszkowski, Eurypterus fischeri Eichwald, Pseu- 
doniscus aculeatus Nieszkowski, and Pterygotus sp. An Orthoceras, 
O. tenuis Wahlenberg, is quite common in the eurypterid layer and 
there are also two cephalaspidian fishes, Thyestes verrucosus Eichwald 
and Tremataspis schrencki Schmidt. This layer is overlain by about 
eighteen inches of mottled yellow and gray, nearly unfossiliferous 
limestone from which have been collected a few fish scales, Leper- 
ditia angelina Schmidt and Platyschisma helicites. 
What is probably the same eurypterid horizon is exposed on the 
seashore at Attel, about six or seven miles southwest. The rock 
nearest the water-level consists of two feet of gray to white dolomitic 
limestone in one to four inch beds. Some of the beds are crowded 
with Leperditia angelina while others have many eurypterids. Masses 
of Clathrodictyon up to two feet in diameter are associated in the 
same beds with the eurypterids and toward the top is a thin layer 
which has the appearance of being a conglomerate, but it may be that 
the “pebbles” are of organic origin. The upper portion of the beach 
is covered with debris, and it is probable that from five to six feet of 
strata are concealed. At the top of the beach is a low cliff in which 
about four feet of thick-bedded gray limestone are shown. Below the 
dolomitic beds at the water’s edge there appear to be beds of coralline 
limestone with many stromatoporoids. 
Between Rotzikiill and Attel are the exposures of Lello Brook. 
These are a little above the eurypterid beds and show about six feet 
of thin-bedded limestone, containing many Platyschisma helicites, and 
in some layers numerous Leperditia angelina. Many fish remains, 
chiefly scales, have also been collected. Species of fish from this 
place are: — 
Coccopeltus asmussi Pander. 
Coelolepis carinatus Pander. 
goebeli Pander 
laevis Pander. 
schmidti Pander. 
Coscinodus agassizi Pander. 
Ctenognathus murchisoni Pander. 
Cyphomalepis egertoni Pander. 
Dasylepis keyserlingi Pander. 
Dictyolepis bronni Pander. 
SOTO SEO be 
—_ 
