Kneesamo Posted May 12, 2019 Share Posted May 12, 2019 Found this near the Castaic Formation in Santa Clarita California. The Castaic Formation is known for it's marine fossils but this looks like a bone from a land based animal. 20190512_080859 by Benjamin Scott Cook, on Flickr 20190512_080908 by Benjamin Scott Cook, on Flickr Link to comment Share on other sites More sharing options...
Auspex Posted May 12, 2019 Share Posted May 12, 2019 Despite its suggestively bone-like shape, the cross section shows neither cancellous nor cortical bone textures. I suspect that it is a concretionary nodule, of geologic origin. These are a sometimes common feature in sedimentary rocks. 1 "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...
Auspex Posted May 12, 2019 Share Posted May 12, 2019 It could also have originated as a seabed burrow... "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...
caldigger Posted May 12, 2019 Share Posted May 12, 2019 Our marine deposits tend to be filled with shrimp burrows. Link to comment Share on other sites More sharing options...
Kneesamo Posted May 18, 2019 Author Share Posted May 18, 2019 On 5/12/2019 at 9:16 AM, Auspex said: It could also have originated as a seabed burrow... On 5/12/2019 at 10:07 AM, caldigger said: Our marine deposits tend to be filled with shrimp burrows. Thank you for your responses. So what looks like could've been an area formerly filled with marrow in part of a burrow? Link to comment Share on other sites More sharing options...
Auspex Posted May 18, 2019 Share Posted May 18, 2019 11 hours ago, Kneesamo said: So what looks like could've been an area formerly filled with marrow in part of a burrow? Possibly iron, accreted by bacteria as a metabolite. This is one of the basic processes by which concretions form. "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...
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