Carboniferous (fossil) rock

[Antonasaurus]

I found this rock in France at a fossil site called Graissesac and it seems to have two strange spots on it (maybe a third one too, but it is faded). The texture of the spots is smoothe unlike the surrounding matrix, and their colour is brownish. Any ideas on what this could be?        

[Antonasaurus]

A close-up of each spot:

[Antonasaurus]

[Antonasaurus]

[Fossildude19]

From a quick google search, the locality is a carboniferous plant locality,... so I would say they are possibly seeds.

Maybe something along the lines of Rhabdocarpus sp., or Trigonocarpus, perhaps.

 

Are there any known instances of arthropods found there?

Regards,

 

EDIT: It appears, from this website, that the place is only known for plant finds.

 

[Antonasaurus]

The site is mainly known for plants, but it is still possible to find Arthropoda. It is however, very uncommon and only a few have been found so far.

[Max-fossils]

I'm sorry, but I have absolutely no clue about this... I wonder what it turns out to be!

 

Anyways this here might help: http://english.fossiel.net/sites/fossil_site.php?plaats=193

 

 

Best regards and good find,

 

Max

[marguy]

Antonasaurus , here is a picture with 4 types of seeds found in Graissessac basin (not Graissesac  but Graissessac);

 this picture is on page 26, part 2 of :

http://www.ffamp.com/file/documents/Graissesac-paleobotanique-partie1.pdf

http://www.ffamp.com/file/documents/Graissesac-paleobotanique-partie2.pdf 

(Pachytesta is a big seed, almost 8-10cm, so not yours ! )

these species : Cordaicarpus expansus ,  Codonospermum sp. ,Hexagonocarpus sp., Rhabdocarpus sp. , Samaropsis sp. ,Trigonocarpus noeggeratii, are cited in :

Martín-Closas, C.,  Galtier, J. (2005): Plant Taphonomy and Paleoecology of Late Pennsylvanian Intramontane Wetlands in the Graissessac-Lodeve Basin (Languedoc, France), PALAIOS, V20, 249–265.    (sorry, I have no access to Palaios)

For Fossildude :

Euproops mariae Crônier and Courville 2005

Crônier, C., Courville, P. (2005): New xiphosuran merostomata from the Upper Carboniferous of the Graissessac Basin (Massif Central, France), C. R. Palevol, V4, 123–133

 

[abyssunder]

Now the cited documents are in the TFF database for further reference.

 

Martín-Closas, C., en Galtier, J., 2005: Plant Taphonomy and Paleoecology of Late Pennsylvanian Intramontane Wetlands in the Graissessac-Lode`ve Basin (Languedoc, France), PALAIOS, V20, 249–265.

Crônier, C., Courville, P., 2005: New xiphosuran merostomata from the Upper Carboniferous of the Graissessac Basin (Massif Central, France), C. R. Palevol, V4, 123–133.

[marguy]

Thank you, Abyssunder for these documents

[abyssunder]

No need to thank. We are here as a Team. The first one replying has the hardest job, all below (I think) is easier in the narrowing down process. Thank you for your intervention and your knowledge in the domain so far.