lyoung Posted August 25, 2011 Share Posted August 25, 2011 Hello All, attached are a few pics to help me out. I found this bone down in Chesapeake Beach, MD within the Calvert Cliff formations. Most fossils pulled from the cliffs are from 13 million to about 21 million years. I found this fossil within the water edge at the cliffs. A fellow professor has said he believes it may be a Tilly Bone. I figured a second opinion can never hurt... I was thinking (hoping) that it was a toe claw from a giant ground sloth. From what I have seen, Tilly bones are very variable in size and shape. Any suggestions and help would be great! Thanks all! Larry Link to comment Share on other sites More sharing options...
Shellseeker Posted August 25, 2011 Share Posted August 25, 2011 Maybe -- Here is a fossil tilly bone. It is a LOT smaller than yours... The White Queen ".... in her youth she could believe "six impossible things before breakfast" Link to comment Share on other sites More sharing options...
Indy Posted August 26, 2011 Share Posted August 26, 2011 There are several Mystery Fossil posts on the forum that point to Tilly bone. Here are few http://www.thefossilforum.com/index.php/topic/9704-first-creek-dig-of-the-season http://www.thefossilforum.com/index.php/topic/17332-huntin-the-harbor http://www.thefossilforum.com/index.php/topic/15614-id-baby-crocodile-head http://www.thefossilforum.com/index.php/topic/16604-looks-like-a-woodpeckers-head-tilly-bone http://www.thefossilforum.com/index.php/topic/863-now-what-is-these-thing http://www.thefossilforum.com/index.php/topic/23123-what-are-these-fossils Flash from the Past (Show Us Your Fossils)MAPS Fossil Show Link to comment Share on other sites More sharing options...
worthy 55 Posted August 26, 2011 Share Posted August 26, 2011 Looks like one. It's my bone!!! Link to comment Share on other sites More sharing options...
Auspex Posted August 26, 2011 Share Posted August 26, 2011 Classic Tilly bone! "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
Texas-Tunnel Rat Posted August 26, 2011 Share Posted August 26, 2011 call me innocent and uncultured but what is a "Tilly Bone"? PUBLICATIONS Dallas Paleontology Society Occasional Papers Vol. 9 2011 "Pennsylvanian Stratigraphy and Paleoecology of Outcrops in Jacksboro, Texas" Author Texas Paleontology Society Feb, 2011 "Index Fossils and You" A primer on how to utilize fossils to assist in relative age dating strata" Author Quotes "Beer, Bacon, and Bivalves!" "Say NO to illegal fossil buying / selling" "They belong in a museum." Education Associates of Science - 2011 Bachelors of Science (Geology & Biology) - 2012 est. Link to comment Share on other sites More sharing options...
Auspex Posted August 26, 2011 Share Posted August 26, 2011 call me innocent and uncultured but what is a "Tilly Bone"? My link "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
cowsharks Posted August 26, 2011 Share Posted August 26, 2011 Hyperostotic fish bones: My link Link to comment Share on other sites More sharing options...
Texas-Tunnel Rat Posted August 26, 2011 Share Posted August 26, 2011 ahhh gotcha, adding it to the old vocab. PUBLICATIONS Dallas Paleontology Society Occasional Papers Vol. 9 2011 "Pennsylvanian Stratigraphy and Paleoecology of Outcrops in Jacksboro, Texas" Author Texas Paleontology Society Feb, 2011 "Index Fossils and You" A primer on how to utilize fossils to assist in relative age dating strata" Author Quotes "Beer, Bacon, and Bivalves!" "Say NO to illegal fossil buying / selling" "They belong in a museum." Education Associates of Science - 2011 Bachelors of Science (Geology & Biology) - 2012 est. Link to comment Share on other sites More sharing options...
Shellseeker Posted August 26, 2011 Share Posted August 26, 2011 Raises an interesting question -- lyoung has a 4.5 inch Tilly bone, I have one at 1.25 inches.. What is the range and how does the size of a tilly bone relate to the size of the fish it came from . Is it like teeth where 1 inch = 10 feet? The White Queen ".... in her youth she could believe "six impossible things before breakfast" Link to comment Share on other sites More sharing options...
Indy Posted August 26, 2011 Share Posted August 26, 2011 Raises an interesting question -- lyoung has a 4.5 inch Tilly bone, I have one at 1.25 inches.. What is the range and how does the size of a tilly bone relate to the size of the fish it came from . Is it like teeth where 1 inch = 10 feet? The main issue with Tilly bones is identification. By that I mean associating specific Tilly bones with specific fish species and to complicate the equation the size may differ between species as well as the age of the fish. Finding complete skeletons with Tilly bones is necessary. Well that the short answer from one who knows enough about the subject to be dangerous Flash from the Past (Show Us Your Fossils)MAPS Fossil Show Link to comment Share on other sites More sharing options...
Indy Posted August 26, 2011 Share Posted August 26, 2011 Mystery fossils which eventually point to Tilly bones pop-up frequently here as well as on other fossil discussion forums. Here is such a post on the Paleolist and what is different about this post is the specimen is NOT a fossil and was found on the Ohio River. My link Flash from the Past (Show Us Your Fossils)MAPS Fossil Show Link to comment Share on other sites More sharing options...
tracer Posted August 26, 2011 Share Posted August 26, 2011 Raises an interesting question -- lyoung has a 4.5 inch Tilly bone, I have one at 1.25 inches.. What is the range and how does the size of a tilly bone relate to the size of the fish it came from . Is it like teeth where 1 inch = 10 feet? i probably ought to go research it some more before i post, but i'm not sure that there's enough uniformity to the hyperostosis that the phenomenon represents to consider it reliable for gauging the size of the critter. Link to comment Share on other sites More sharing options...
Indy Posted August 26, 2011 Share Posted August 26, 2011 i probably ought to go research it some more before i post, but i'm not sure that there's enough uniformity to the hyperostosis that the phenomenon represents to consider it reliable for gauging the size of the critter. I totally 100% agree...You can research the heck out the subject and not end up knowing any more than what has already been published or discussed somewhere on one of the many Tilly threads. Sooner or later we are going to need a Pinned" on Tilly bone so when the subject comes up again (and it will) we can simply point to the "Pinned" post. Just Joking! :laughing on the floor 24: Flash from the Past (Show Us Your Fossils)MAPS Fossil Show Link to comment Share on other sites More sharing options...
GeoJon Posted August 26, 2011 Share Posted August 26, 2011 Looks like one. What the heck are Tilly Bones? Link to comment Share on other sites More sharing options...
Auspex Posted August 26, 2011 Share Posted August 26, 2011 What the heck are Tilly Bones? My link "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
tracer Posted August 26, 2011 Share Posted August 26, 2011 tilly bones are just some boney part of a fish that happens to go all incredible hulkish and add bunches of unnecessary bone, possibly as a means of calcium-dumping due to some imperfect other regulatory process in its system of dealing with its environment and metabolism. i read somewhere (like wikipedia, probably) that it might be a mechanism triggered by the fish being in a hypersaline environment. don't know. once chemistry becomes involved, i sometimes have to "ad lib" on the information i toss out. reminds me of that time i got an "A" on a lab experiment by guessing that the product i turned in would not be tested to see if it really was reagent-grade anhydrous magnesium sulfate. it was the right weight. it was pretty and nicely labeled. so yeah, anyway, um, tilly bones are like oak galls, only with lots of calcium. <sigh> Link to comment Share on other sites More sharing options...
-AnThOnY- Posted August 26, 2011 Share Posted August 26, 2011 Raises an interesting question -- lyoung has a 4.5 inch Tilly bone, I have one at 1.25 inches.. What is the range and how does the size of a tilly bone relate to the size of the fish it came from . Is it like teeth where 1 inch = 10 feet? His appears to only be 4.5 cm to me. Cause the ruler itself is metric Link to comment Share on other sites More sharing options...
cck Posted August 26, 2011 Share Posted August 26, 2011 not that it matters too much to the question, but I believe lyoung's ruler is metric- 4-5 cm rather than inches- a lot closer to your 1.25 in. C Link to comment Share on other sites More sharing options...
Shellseeker Posted August 26, 2011 Share Posted August 26, 2011 cck, good catch and lack of attention to detail on my part. indy, Nice link!!! seeing the fossil and then seeing an actual "real" tilly bone makes a tremendous difference. Helps me realize why I do not find many of these. Actually, I have only found the one in the photo. The White Queen ".... in her youth she could believe "six impossible things before breakfast" Link to comment Share on other sites More sharing options...
Indy Posted August 26, 2011 Share Posted August 26, 2011 For the Record Google archives all posts and replies on our forum. View all archived pages where the phrase "Tilly bone" is mentioned: Click Here Google IMAGE Search...Only search our forum and only show Images on pages where the phrase "Tilly bone" was mentioned Click Here :laughing on the floor 24: Flash from the Past (Show Us Your Fossils)MAPS Fossil Show Link to comment Share on other sites More sharing options...
Indy Posted August 27, 2011 Share Posted August 27, 2011 "Pool Man" claims "bragging rights" for finding the largest Tillby bone (todate). I suggest that he will hold the title for a long time View the "Monster" Tilly bone: Click Here Flash from the Past (Show Us Your Fossils)MAPS Fossil Show Link to comment Share on other sites More sharing options...
Shellseeker Posted August 27, 2011 Share Posted August 27, 2011 Google IMAGE Search...Only search our forum and only show Images on pages where the phrase "Tilly bone" was mentioned Click Here :laughing on the floor 24: Thanks Indy, this is new knowledge for me, it will help improve my future searches. The White Queen ".... in her youth she could believe "six impossible things before breakfast" Link to comment Share on other sites More sharing options...
Indy Posted August 27, 2011 Share Posted August 27, 2011 I NEVER EVER EVER EVER use the simple basic Google Search I always use the Advanced Search engine Click Here as well as the Advanced Image Search engine Click Here All fossil enthusiast (in my opinion) will save a lot of time searching using the Advanced search engines because it makes refined searches easy. Those that see this post... Please share the information with others Barry Flash from the Past (Show Us Your Fossils)MAPS Fossil Show Link to comment Share on other sites More sharing options...
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