TK421 Posted July 13, 2020 Share Posted July 13, 2020 Hello! I was wondering if you guys could help me ID this fossil. I found it in the Waldron Shale (Middle Silurian) collecting piles that the Falls of the Ohio State Park (SE Indiana) sets out for guests to rummage through (they get their shale piles from the Sellersburg Quarry, Sellersburg IN, Clark Co). I wasn't sure if it is part of a crinoid, burrows, or some sort of frond-type bryozoan or coral. I have August F. Foerste's Silurian Fauna of KY document but didn't see anything in his figures that caught my eye. The ruler in my photo shows the centimeter side. The true color of the shale is more blue-gray but I have a desk lamp with a warm white bulb on it which is giving the pic a false yellowish hue. Thanks in advance for your help and expertise. Link to comment Share on other sites More sharing options...
fossilcrazy Posted July 13, 2020 Share Posted July 13, 2020 Hi TK241, Looks like you have a negative impression of half of a Lichid Trilobite pygidium (trilobite tail). Rather uncommon in the Waldron. A whole Lichid Trilobite would be very rare. The picture is of an Arctinurus boltoni, but looks very close to what the Waldron Lichid - Arctinurus occidentalis looks like. 4 Link to comment Share on other sites More sharing options...
TK421 Posted July 13, 2020 Author Share Posted July 13, 2020 10 minutes ago, fossilcrazy said: Hi TK241, Looks like you have a negative impression of half of a Lichid Trilobite pygidium. Rather uncommon in the Waldron. A whole Lichid Trilobite would be very rare. Wow, really? Boy was I completely off-base! Could you help me to orient myself in this fossil? Is what I was seeing as the "stem" at the 6:30 position the part closest to the axial ring? Link to comment Share on other sites More sharing options...
Fossildude19 Posted July 13, 2020 Share Posted July 13, 2020 27 minutes ago, TK421 said: Wow, really? Boy was I completely off-base! Could you help me to orient myself in this fossil? Is what I was seeing as the "stem" at the 6:30 position the part closest to the axial ring? 2 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...
TK421 Posted July 13, 2020 Author Share Posted July 13, 2020 Thanks guys! Really appreciate your fast ID and help with orientation. Wow - I need to go back and (hopefully) find the rest of him. What a beauty! Link to comment Share on other sites More sharing options...
Fossildude19 Posted July 13, 2020 Share Posted July 13, 2020 4 minutes ago, TK421 said: Thanks guys! Really appreciate your fast ID and help with orientation. Wow - I need to go back and (hopefully) find the rest of him. What a beauty! The Trilobite pictured is an Arctinurus boltoni. It may not be the same genus/species as this at your location, but a similar Lichid trilobite. 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...
TK421 Posted July 13, 2020 Author Share Posted July 13, 2020 3 minutes ago, Fossildude19 said: The Trilobite pictured is an Arctinurus boltoni. It may not be the same genus/species as this at your location, but a similar Lichid trilobite. Understood. Thanks again! Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now