Fern fossil imprint in shale juxtaposed with modern day fern fronds. The distinctive white outline on black shale is caused by aluminum silicate (also known as pyrophyllite) and is characteristic of fern fossils found in coal mines in the St Clair, Pennsylvania area. The fossils are from the Pennsylvanian Epoch of the Carboniferous Period, 300 million years ago.
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Details
Creative#:
TOP22255752
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
N/A
Property Release:
No
Right to Privacy:
No
Same folder images:
fossilizedfernfrondfrondsleafleavesplantpteridophytafilicophytavascularseedlessprehistoriccompressionfossilimprintsedimentaryrockshalepennsylvanianepochcarboniferouscarboniferousperiodllewellynformationancientpreservedextinctwhiteoutlineblackshalecoalmineralizedpaleontologygeologynaturalhistorypaleozoicerahandsamplespecimen
ancientblackcarboniferouscarboniferouscoalcompressionepocheraextinctfernfilicophytaformationfossilfossilizedfrondfrondsgeologyhandhistoryimprintleafleavesllewellynmineralizednaturaloutlinepaleontologypaleozoicpennsylvanianperiodplantprehistoricpreservedpteridophytarocksamplesedimentaryseedlessshaleshalespecimenvascularwhite
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