1. LON-CAPA Logo
  2. Help
  3. Log In
 

Home    The oldest land plants (1)     The oldest land plants (2)   Rhynie Chert
Parka       (Seed) ferns     Lepidodendron       The leaf of Neuropteris      Links

(Seed) ferns from the Piesberg and Ibbenbüren

With this key it should be possible to identify several ferns and seed ferns from the Upper Carboniferous (Westfalian B, C and D) of the Piesberg near Osnabrück and Ibbenbüren in Germany.
The list is not complete and the number of used features is small.
So always check the result using a more extensive description in a book like Josten: Die Steinkohlen-Floren Nordwestdeutschlands (1991) of Remy & Remy Die Floren des Erdaltertums (1987).

All cited species occur in the Piesberg (Westfalian C and D) and/or in Ibbenbüren (Westfalian B and C). The photos are taken from specimens of my own collection.

Table

Click on the matching group.

Neuropteristhe leaflets are neuropteris-like
      contracted at the base, narrow attachment to the axis
      the veins form a more or less clear midvein

 

 

Pecopteristhe leaflets are pecopteris-like
      broad attachment to the axis
      veins coming from the midvein

 

 

Alethopteristhe leaflets are alethopteris-like
     decurrent and connected with each other
     veins coming from the midvein and from the axis

 

Sphenopteristhe leaflets are sphenopteris-like
      variously lobed or divided

 

 

Mariopteristhe leaflets are mariopteris-like
      leaflets or lobes more or less triangular

       basal leaflet or lobe asymmetrical
   

 
CyclopterisCyclopteris
     mostly detached, rounded leaves
     from small to very large

 

  

AphlebiaAphlebia
     usually detached, deeply divided leaves
     from small to very large

Top