Toddster Posted July 26, 2016 Share Posted July 26, 2016 Found on beach in southwest lower Michigan. Fossil or mineral? Link to comment Share on other sites More sharing options...
Guguita2104 Posted July 26, 2016 Share Posted July 26, 2016 I'm not sure...Maybe a trace fossil. Regards, Link to comment Share on other sites More sharing options...
ynot Posted July 27, 2016 Share Posted July 27, 2016 It looks like the rock has been distorted by geologic forces. It does appear to be a fossil, but it maybe impossible to ID. A trace fossil is a good guess. Tony Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
CraigHyatt Posted July 27, 2016 Share Posted July 27, 2016 Can you get a closer shot of the "whale tail" region? Do you think that's connected to the rest of the item or is it just a separate mark? Also, can you indicate the size of the item? Info: Craig Hyatt, retired software/electrical engineer Experience: Beginner, fossil hunting less than a year Location: Eagle Pass, TX USA on the border with Mexico, hot dry desert Formation: Escondido, Marine, Upper Cretaceous Materials: Sandstone, Mudstone, Shale, Chert, Chalk Typical: Thalassinoides, Sphenodiscus, Exogyra, Inoceramus Reference: http://txfossils.com/Txfossils.html Link to comment Share on other sites More sharing options...
Fossildude19 Posted July 27, 2016 Share Posted July 27, 2016 I agree - this is a trace fossil - commonly called AMB (Adhesive Meniscate Burrows). Check out the PDF posted HERE. And #1 in the picture below: 8 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...
Toddster Posted July 27, 2016 Author Share Posted July 27, 2016 A better picture of the "whale tail". This rock is 2-1/4 inches at it's widest point - 16cm It seems connected, but I'm not positive. The stem area definitely resembles AMB. 1 Link to comment Share on other sites More sharing options...
Herb Posted July 27, 2016 Share Posted July 27, 2016 not really seeing a fossil there "Absence of evidence is not evidence of absence"_ Carl Sagen No trees were killed in this posting......however, many innocent electrons were diverted from where they originally intended to go. " I think, therefore I collect fossils." _ Me "When you have eliminated the impossible, whatever remains, however improbable, must be the truth."__S. Holmes "can't we all just get along?" Jack Nicholson from Mars Attacks Link to comment Share on other sites More sharing options...
fossilcrazy Posted July 27, 2016 Share Posted July 27, 2016 Fossildude19 has nailed it. Only further ID would be the age and the name of the trace maker. Beach float would not yield that info for you. 1 Link to comment Share on other sites More sharing options...
doushantuo Posted July 27, 2016 Share Posted July 27, 2016 (edited) So the formation where this originally came from is continental/non-marine ,then? AMB's being defined in the continental realm good piece on disinguishing Taenidium,Beaconites and Ancorichnus: http://cdn.palass.org/publications/palaeontology/volume_37/pdf/vol37_part2_pp305-337.pdf Edited July 27, 2016 by doushantuo 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