-
Brad Warne posted a new activity comment 3 years, 8 months ago
3 years, 8 months ago3 years, 8 months agoIt is not complete. It doesn’t look complete. It is a portion of the animal’s anatomy. It is an interesting fossil because it clearly shows the internal structure of what made these animals unique
-
Brad Warne posted a new activity comment 3 years, 8 months ago
3 years, 8 months ago3 years, 8 months ago@leonardo-miranda thank you
-
Brad Warne posted a new activity comment 3 years, 8 months ago
3 years, 8 months ago3 years, 8 months agoI disagree. This isn’t the complete creature it’s only the part of the phragmocone that contains the the siphuncle and camera. Also there actually is no whorl as a gastropod would have. Look at the lines that demark the sections.
-
Brad Warne posted a new activity comment 3 years, 8 months ago
3 years, 8 months ago3 years, 8 months agoI find many fossil images that show an structure exactly like this in ‘Nautiloid cephalopods’. Also in all anatomical drawings of orthocone cephalopods. It’s the siphuncle. The cavity are the camera.
-
Brad Warne posted a new specimen in the group What is it? from the myFOSSIL app 3 years, 8 months ago
3 years, 8 months ago3 years, 8 months agoBrad Warne has contributed specimen mFeM 83586 to myFOSSIL!
-
Brad Warne posted a new activity comment 3 years, 8 months ago
3 years, 8 months ago3 years, 8 months agoA quick bit of research suggests this is a piece opalized Cyrenopsis, Cretaceous bivalve.
-
Brad Warne posted a new activity comment 3 years, 8 months ago
3 years, 8 months ago3 years, 8 months agoNow that I see it as an orthocone, I think that the long narrow bit is the siphuncle and rest of the cone has broken away.
-
Brad Warne posted a new specimen in the group What is it? from the myFOSSIL app 3 years, 8 months ago
3 years, 8 months ago3 years, 8 months agoBrad Warne has contributed specimen mFeM 83555 to myFOSSIL!
-
Brad Warne posted a new activity comment 3 years, 8 months ago
3 years, 8 months ago3 years, 8 months agoBut where is the siphuncle in the top down view?
-
Brad Warne posted a new activity comment 3 years, 8 months ago
3 years, 8 months ago3 years, 8 months agoThank you @patrick-hsieh
-
Brad Warne posted a new activity comment 3 years, 8 months ago
3 years, 8 months ago3 years, 8 months agoYou’ll notice that I’ve been hacking away at the fossil with a dremel tool to expose most of what you see. I accidentally made a small hole on the section you suggest is an orthocone. The fact that it’s hollow would further suggest the hollow chambers of a cephalopod.
-
Brad Warne posted a new activity comment 3 years, 8 months ago
3 years, 8 months ago3 years, 8 months agoWow. Very interesting. I have an orthocone found from this same creek about thirty years ago.
-
Brad Warne posted a new specimen in the group What is it? from the myFOSSIL app 3 years, 8 months ago
3 years, 8 months ago3 years, 8 months agoBrad Warne has contributed specimen mFeM 83534 to myFOSSIL!
-
Cool
-
The wider section with the concave ends are remnants of an orthocone (used to be called Orthoceras but thats a wastebasket taxon). Crinoid stems are usually flat, with some features that reveal their 5-pointed radial symmetry and a hole (axial canal) in the center. Not sure about the long thin section. It could be the rest of the orthocone that…[Read more]
-
Wow. Very interesting. I have an orthocone found from this same creek about thirty years ago.
-
You’ll notice that I’ve been hacking away at the fossil with a dremel tool to expose most of what you see. I accidentally made a small hole on the section you suggest is an orthocone. The fact that it’s hollow would further suggest the hollow chambers of a cephalopod.
-
Thank you @patrick-hsieh
-
But where is the siphuncle in the top down view?
-
Now that I see it as an orthocone, I think that the long narrow bit is the siphuncle and rest of the cone has broken away.
-
Yes, I think you’re right! In fact, on page 530 of my copy of Shimer and Shrock’s Index Fossils of North America, (1965 printing), there is a picture of a specimen with the siphuncle and partial camerae preserved just like your specimen.
-
-
Brad Warne posted a new activity comment 3 years, 8 months ago
3 years, 8 months ago3 years, 8 months agoNo edit button on this post for some reason. Will repost with more pics
-
Brad Warne posted a new activity comment 3 years, 8 months ago
3 years, 8 months ago3 years, 8 months agoThank you will do!
-
Brad Warne posted a new activity comment 3 years, 8 months ago
3 years, 8 months ago3 years, 8 months agoI don’t know how to add pics to a post. Certainly concave with no hole or center
-
Brad Warne posted an image in the group What is it? from the myFOSSIL app 3 years, 8 months ago
3 years, 8 months ago3 years, 8 months agoCrinoid stem and calyx?
Found in Lake Ontario tributary-
Yup
-
Do you have a picture looking at the end? Is the bottom end concave, smooth with no hole in the center?
-
I don’t know how to add pics to a post. Certainly concave with no hole or center
-
To add more pictures, tap the yellow edit button on the lower right corner of the current picture, and scroll down to where you can add more pictures. You can add up to five.
-
Hope that helps!
-
Thank you will do!
-
No edit button on this post for some reason. Will repost with more pics
-
-
Brad Warne joined the group What is it? 3 years, 8 months ago
3 years, 8 months ago3 years, 8 months ago -
Brad Warne became a registered member 3 years, 8 months ago
3 years, 8 months ago3 years, 8 months ago
I find many fossil images that show an structure exactly like this in ‘Nautiloid cephalopods’. Also in all anatomical drawings of orthocone cephalopods. It’s the siphuncle. The cavity are the camera.
I disagree. This isn’t the complete creature it’s only the part of the phragmocone that contains the the siphuncle and camera. Also there actually is no whorl as a gastropod would have. Look at the lines that demark the sections.
Hm. Well now I’m confused.
How big is this?
Thats a beautiful orthocone specimen! The septa and siphuncle are nicely preserved. I’m curious about the deposits lining the camerae. Are those cameral deposits or are they just artifacts of the mineralization process?
That’s an orthocone, and that’s final
@leonardo-miranda thank you
Dang.
The top half looks complete though, and it doesn’t end in a point like orthacones do
It is not complete. It doesn’t look complete. It is a portion of the animal’s anatomy. It is an interesting fossil because it clearly shows the internal structure of what made these animals unique
I just really don’t like orthacones. They’ve tried to eat me before.
@a-trilobite at least you evolved great eyesight before those calamari jerks did
@leonardo-miranda yeah those guys can be a real pain in the pygidium.