✅ SOLVED Vertibrae fossil?

[cmthunder]

In middle Tennessee for my daughters wedding staying at airb&b. This rock is in garden and looks like vertibrae fossil?
Pointed out to caretaker and she wasn’t aware of it.
Can anyone I’d for sure?
Thanks

 

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[ticndig]

trilobite fossils.

 

[Red-Coat]

Neat fossil. Definitely not a trilobite (and not vertebrate either).

It's part of an orthocone nautiloid, probably Orthoceras-related. This one from the Ordovician of Kentucky:

Orthoceras - Wikipedia

en.wikipedia.org

 

[Mackaydon]

Maybe the oldest previously-living relic presented on TN.
Probably from the Silurian Period (a mere 44-416 million years ago).
Don in SoCal

 

[Red-Coat]

Maybe the oldest previously-living relic presented on TN.
Probably from the Silurian Period (a mere 44-416 million years ago).
Don in SoCal

Typo there. The Silurian ran from 443.8 to 419.2 million years ago.

There are relatively few Silurian exposures in the State. The most likely possibilities for orthocones related to Orthoceras from Tennessee would be Actinoceras from the Ordovician (485.4-443.8 million years ago) or Michelinoceras from the Devonian (419.2-358.9 million years ago).

 

[Mackaydon]

Typo correct: 444-416. Thanks.
Never found one of these in the Devonian strata behind Miami University, but did find many (thousands, etc.) of trilobite fossil remains.
Don....