Marisia - Maros Megyei Múzeum Évkönyve 32/1. (2012)

Paleontology and mineralogy

Main Pliocene coal-generating phytocoenoses in Danube-Motru Area (Romania)

Fossil plants are originating from the roof of the coal seams IV and VI of Husnicioara, the yellowish grey marl on Balota Hill and Dedovita and of the clays and silt clays from Bacles.

It is considered that the fossil plants had nearly the same coenotic exigencies and ecological requirements as the living correspondents.

The reconstruction of the main pliocene coal-generating phytocoenoses

In the Pliocene deposits of the Danube-Motru sector were identified [18, 12, 2, 3, 21, 9, 10] the following taxa presented in the table 1.

Table 1: Pliocene plant genera and species recorded in Danube-Motru area

No. Taxa Husnicioara Dedovita Balota Hill Bades

1 Sequoia abietina (brongniart) knobloch _____+_____________+_____________+

2 Pinus sp._______________________________________________________________+__________________________________

3 Taxodium dubium (sternberg) heer __________________________________+

4 Glyptostrobus europaeus (brongiart) unger_______ + + +

5 Glyptostroboxylon tenerum +

6 Ceratophyllum sp. aff. C. demersum linne +

7 Platanus platanifolia (ettingshausen) knobloch +_____________________+

8 Liquidambar europaea aL. braun______________________+_____________+___________________

9 Alnus cf. gaudinii (heer) knobloch & kvacek - +__________________________________

10 Alnus sp. +_____________________+_____

11 Betula cf. macrophylla (goeppert) heer +____________________________

12 Carpinus grandis unger + ____________

13 Carpinus betulus linne —leaves + +

14 Carpinus betulus linne - bracts + _______+___________________

15 i Myrica lignitum (unger) saporta _______+_________________________________________________

16 Carpinus pyramidalis gaud + ____________

17 Fagus attenuata goeppert +____________________________

18 Quercus roburoides berenger +_____________________+______

19 Quercus cf. mueblembergii engelman _____+

20 Quercus sp. +_____________________________________________

21 Ulmus laevis linne +

22 Ulmus pyramidalis g

o

eppert___________________________________________________+

23 Acer cf. tricuspidatum bronn +_______

24 Acer cf. campestre linne +_______

25 Acer sp. +_____________________________________________

26 Carya denticulata (weber) iljinskaia + _____+_____

27 Carya serraefolia (goeppert) krausel + ____________

28 Juglans acuminata aLl. braun +____________________________

29 Salix integra g

o

e

p

p

e

r

t______________________+__________________________________

30 Salix stefanescui laurent & marion +_____________________________________________

31 Salix sip. aff. S. varians al. braun +____________________________

32 Salix sp. +__________________________________+______

^ Byttneriophyllum tiliaefolium (al. braun) +

knobloch & kvacek _________________________________________

34 Pandanus austriacus ettingshausen +_____________________________________________

35 P. trinervis ETTINGSHAUSEN +_____________________________________________

36 P. barbui PETRESCU & DUSA + ____________

37 Potamogeton cf. nodosus poir +

_______________________________________

38 Phragmites oeningensis al.br. +

_______________________________________

177