( 424 ) 
It was not before the geological exploration of the Rhine-province 
by the “geologische Landesanstalt” of Berlin was begun that the 
same strata as those of Duisdorf were found elsewhere too and that 
the silicified fossils were collected also on other places. In his 
description of these fiuviatile deposits in the Lower Rhine basin 
Dr. G. Fliegel enumerates the following petrifactions: J ) 
Millericrinus horridus d’Orb. 
Cid arts- spines. 
Serpula- tubes. 
Alectryortm. 
N&rinea. 
Trigonia costata Park. 
Belemnites 
Quenstedticeras Mariae d’Orb. 
Then this geologist publishes as his opinion that the greater part 
may be derived from A/a/m-deposits but also some species indicate 
an origin from younger Dogger-deposixs. 
After this compendium of what the German places have yielded 
now, I can pass to the discussion of the fossils collected in the same 
strata in North-Brabant and Limburg. 
Some small pebbles in, which round, lenticular and oval figures 
of the size of V 2 to 1 m.m., distinctly distinguished from the round 
anorganic oolites, are very numerous, may be considered as silicified 
foraminifera-limestones. With Pohlig those fossils can be classified 
with reserve under the Miliolidae. 
Little fragments of Spongiae are present from different places, 
usually further totally irrecognisable. A fragment from the boring 1 
near Vlodrop may belong to Cnemidiastrum stellatum Gold/. sp., 
another fragment from the same place to Eusiphonella Bronni Mst ■ sp. 
From the other fragments nothing is to be said with any probability. 
The Anthozoa are also represented by some specimina. All frag¬ 
ments are however very incomplete. A specimen from the clay-pit 
near Reuver probably belongs to Thamnastraea prolifera Becker, a 
fragment from the boring 5 near Leeinhorst probably belongs to 
the genus Favia-, the rest however is too small and too much damaged 
to enable us to identify them. 
By far the most numerous fossils are, with the serpula tubes, the 
remains of Crinoidea, so that this group forms the most characteristic 
part of this silicified fauna. Most of the stems certainly belong to 
!) G. Fliegel. Pliocane Quarzschotter in der Niederrheinisehen Bucht. Jahrbuch 
der Konigl. Preuss. Geol. Landesanstalt fur 1907, p. 100, 
