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Vertebrae clarification


steviefossils

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Hello, below are photos of some verts I found at Big Brook Park in Marlboro NJ. (Late cretaceous, Mount Laurel formation). I thought they were both ray verts, upon taking another look however I noticed there are some slight differences in their build. I wanted to see if anyone had any clarification for me. I've checked the usual sites, njfossils.net and njfossils.com, but I think I don't know how to interpret different features.

 

I took photos of each face (anterior, posterior),and  tops and bottoms (dorsal/ventral sides). Both were found, to my knowledge, in the Mount Laurel formation at Big Brook. I also tried to take a close up of what appeared to be spinal process attachment points on the smaller vert.

 

Aside from one vert being more oval than the other, the larger seems to decrease in surface area/diameter from anterior to posterior, while the smaller seems to form a wedge or "v" shape along the dorsal-ventral axis. I tried to capture this in the photos but I'm limited by my equipment.

 

Ultimately, I'd like to confirm if these are both ray verts, or if either come from anything else.

 

Thank you,

 

 

Pic A (possible process attachment points on small vert):

182507949_processesattachmentpoints.thumb.jpg.9952fa9e20870a8feaf8d53d6af6ca8d.jpg

Pic. B1530651500_vertsface1.thumb.jpg.ff827f8fe87955db4a6100c45f462561.jpg 

Pic. C963377704_vertsface2.thumb.jpg.681871f70b9f9b4fc029783e24bc25c5.jpg

Pic. D: 1070706105_vertsnarrow.thumb.jpg.629ce0c6be7486a33ab33fa793dfbdd5.jpg                                           

Pic E2049284248_vertswide.thumb.jpg.5c43ea3e0c14292590460c51d25a9995.jpg

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33 minutes ago, Al Dente said:

Squatina verts are very similar to these.

 I was only familiar with the photos posted on fossilguy.com regarding squatina vertebrae, and that is a larger piece. However, I did just Google it and I see what you mean. 

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