Rock Yard Posted February 26, 2020 Share Posted February 26, 2020 Discovered in 1960. From Central PA farm field. Approx. 4" x 8" Was longer but was used as door stop for decades and slowly chipped away. Appears to be sandstone IMG_0344.HEIC IMG_4221.HEIC Link to comment Share on other sites More sharing options...
Fossildude19 Posted February 26, 2020 Share Posted February 26, 2020 Welcome to the Forum. The forum will not display files with the .HEIC format. I've converted it online to a .JPG image. Any idea what county this is from? Central PA is a large place. Also, can we get a photo of the entire rock, and have a ruler in the picture for scale? 1 Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
Rock Yard Posted February 26, 2020 Author Share Posted February 26, 2020 Sorry posting both again as jpeg. Found in Western York County between York and East Berlin. Many thanks. Link to comment Share on other sites More sharing options...
Plax Posted February 26, 2020 Share Posted February 26, 2020 looks Triassic. Link to comment Share on other sites More sharing options...
abyssunder Posted February 26, 2020 Share Posted February 26, 2020 Very interesting specimen! Almost looks like a bryozoan, in my thinking. " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
Rockwood Posted February 26, 2020 Share Posted February 26, 2020 Mold of a tree fern trunk. Link to comment Share on other sites More sharing options...
ClearLake Posted February 26, 2020 Share Posted February 26, 2020 That is very interesting, and I really don’t know what it is. I’m trying to figure out if the somewhat radiating pattern of the ridges fits with the tree fern trunk suggestion. I’m not at all familiar with those but a quick google of that didn’t show me anything that looked like this, but there could be something I didn’t come across in my five minutes of looking. I’ll be curious to see what others think. Link to comment Share on other sites More sharing options...
TqB Posted February 26, 2020 Share Posted February 26, 2020 1 hour ago, abyssunder said: Very interesting specimen! Almost looks like a bryozoan, in my thinking. It's the right shape but I don't know one that big! Here's a Polypora that I found and donated to a specialist - large branches and fenestrules, but not enough I think... 2 1 Tarquin Link to comment Share on other sites More sharing options...
Pbassham Posted February 26, 2020 Share Posted February 26, 2020 It reminded me of Barbs like you would find on certain fish and down towards the bottom it seems so articulated. Link to comment Share on other sites More sharing options...
Shamalama Posted February 27, 2020 Share Posted February 27, 2020 Looks either fishy (impression of a fin maybe?) or a palm frond. If found in York County, PA it is Triassic in age as that is the predominant age for the sedimentary rocks in the county. -Dave __________________________________________________ Geologists on the whole are inconsistent drivers. When a roadcut presents itself, they tend to lurch and weave. To them, the roadcut is a portal, a fragment of a regional story, a proscenium arch that leads their imaginations into the earth and through the surrounding terrain. - John McPheeIf I'm going to drive safely, I can't do geology. - John McPheeCheck out my Blog for more fossils I've found: http://viewsofthemahantango.blogspot.com/ Link to comment Share on other sites More sharing options...
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