RAYMOND: CORRELATION OF THE ORDOVICIAN STRATA. 211 
The Planilimbata limestone is described as being brownish red in 
color, with green, violet, and yellow spots and streaks, thus reminding 
one strongly of the same stratum on the Walchow. It is 3.5 meters 
in thickness. A rather large fauna is reported, including, Pliomera 
actinura, Megalaspis planilimbata, Niobe laeviceps, Harpina excavata, 
and Orthis christianiae, reminding one of the fauna which Lamansky 
found at the top of the “Glauconite sand” at Papowka. 
The Limbatakalk is a lighter colored rock than the limestone below, 
and may be gray. It has a thickness of 5.45 meters. Megalaspis 
limbata and other fossils are present. 
The Expansuskalk is known from boulders which contain many 
fossils, including the typical Asaphus expansus, A. raniceps, Megalasyis 
acuticauda, M. heros, Lycophoria nucella, ete. 
The Gigaskalk is represented by a single boulder. 
The Platyuruskalk is usually found as boulders of red limestone, 
and along with Asaphus platyurus contains many cephalopods, such 
as Orthoceras conicum, Vaginoceras wahlenbergi, Lituites lituus, ete. 
The Chiron kalk is found in boulders, sometimes containing “lin- 
sen.” The fauna contains Asaphus kowalewski, A. cornutus, Illaenus 
chiron, I. schmidti, and Christiania oblonga, and distinctly suggests 
the C, of Russia. 
The older Chasmopskalk is lithologically like the Chironkalk, and 
in the boulders are found Porambonites schmidti, Platystrophia lynz, 
Christiania oblonga, Echinosphaerites, Ptilograptus suecicus, Climaco- 
graptus, and Diplograptus. 
The boulders assigned to the younger Chasmopskalk or Raerousns. 
kalk contain among others, Chasmops maxima, Illaenus fallax, I. 
oblongatus, Porambonites ventricosus, and Platystrophia lynz. 
Boulders of the so-called “Ostseekalk,’’ also occur which, in the 
North Baltic area, is partly fine-grained “lithographic stone’? com- 
parable to the Wesenberg limestone of Eethania, while other boulders 
are of a different sort. 
Wiman lists the fossils found in a large number of these boulders, 
which would seem to have been derived from formations very similar 
to the Kegel, Wesenberg, Lyckholm, and Borkholm of Esthonia. 
Interesting species are Chasmops wesenbergensis, Encrinurus see- 
bachi, Lichas eichwaldi, and Clitambonites wesenbergensis, all of which 
occur in the Wesenberg at Wesenberg. 
Cyclocrinites schmidti and C. balticus of course suggest the Kegel, 
while Platystrophia lynx and Oxoplecia dorsata occurring together, 
remind one of the Kuckers. 
