Sur l’âge des couches houillères 
4 
42 
46 
563 
Pecopteris Volkmanni Sauveur 3 
— (Dactylotheca) plumosa Artis sp. 
Alethopteris lonchitica Sehloth. sp. . 
—- decurrens Artis sp. 
— Davreuxi Brongt. sp.. 
— Serli Brongt. sp. 
Lonchopteris Bricei Brongt. 
— Silesiaca Gothan 
— halicensis Gothan . ; 
Neuropteris heterophylla Brongt. 
— gigantea Sternb. 
— flexuosa Sternb. 
— tenuifolia Schloth. . 
— acuminata Schloth. 
— ovata Hoffmann 
— rarinervis Bunbury 
— Scheuchzeri Hoffmann 6 
Neurodontopteris obliqua Brongt. sp. 
Cyelopteris orbicularis Brongt. 
Linopteris neuropteroides Gutb. sp.. 
Calamites Suckowi Brongt.. 
— Cisti Brongt. 
— undulatus Sternb. . 
— approximatus Brongt. 
— ramosus Artis 
— cruciatus Sternb. SET Lu at 
Asterophyllites equisetiformis Schloth, sp. 
— cf. grandis Sternb. sp. 
— charaeformis Sternb. sp. . . . 
Annularia sphenophylloides Zenker sp. 
— galioides L. et H. sp. 
— radiata Bronot. . j 
Palaeostachya pedunculata Will. . 
Sphenophyllum euneifolium Sternb. sp. 
— emarginatum Brongt.. 
— majus Bronn sp. 
2 2 Bnei Bassin a 5 
Bassin houiller de Valen- della Ruhr |= & 
de Cracovie ciennes VAE 
(R. Zeiller) 1% Giremon) = 3 
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o | o 2/83|2|2o0|,|s a2 
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