A fossilized frogThis critter was found in the České středohoří, Mountains of Bohemia, the Czech Rep
A fossilized frogThis critter was found in the České středohoří, Mountains of Bohemia, the Czech Republic. This is a well-known fossil locality, particularly for amphibians like this one; several species of frogs have been identified from these fossils. The rocks are Oligocene in age, over 30 million years old.The rocks in the area are a mixture of lake sediments and volcanic deposits, probably created in rift zones that grew in basins that formed to the north of the growing mountain ranges in Central Europe. Fine-grained sediment likely often washed downslope into lakes, burying critters like this frog and enabling preservation of even remnants of the soft tissues of the animal.-JBBImage credit:http://www.fotopedia.com/items/flickr-11207971Sources:http://www.researchgate.net/publication/230093779_A_new_fossil_species_of_Polypodium_%28Polypodiaceae%29_from_the_Oligocene_of_northern_Bohemia_%28Czech_Republic%29http://www.geologicacarpathica.com/browse-journal/volumes/60-6/article-502/http://www.geology.cz/bulletin/fulltext/bullcgs200001007.pdf -- source link
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