Unknown Florida Fossils

[minnbuckeye]

I have two gastropods for @MikeR to weigh in on if he has time. These were found in a pile of street material in a upcoming housing development in Sarasota County. I am assuming Tamiami Formation.

 

 1. I am thinking Chicoreus floridanus but the opening looks different. On my specimen, it is fractured off a bit. 

 

 2. I am pretty sure this is Subpterynotus textilis, but being such a pretty fossil, I want to make sure. 

 

 

  

Now I will call on my resident experts @jcbshark and @Shellseeker , or anyone else that has an opinion, to aide in IDing these. The location was from dredging material piled up from the creation of a lake in Manatee County, by Bradenton. The pile was full of dugong ribs and shark teeth.

 3. This looks like a horse tooth to me but MUCH smaller than ones I have found before. Jack, this one is for you! 

 

 

 

 4. Is this a bony fish vertebrae or shark. I am betting on fish.

  

  

 

[minnbuckeye]

5. This has the shape of some kind of tooth. Come up with a interesting ID. My wife found it and a special tooth will make her want to hunt more than she does.

  

6. Another tooth shaped object with the back side split off. 

7. Jack, did you have an opinion of this from my last post. When you asked, I mentioned it does have small serrations. 

 

[MikeR]

1 hour ago, minnbuckeye said:

I have two gastropods for @MikeR to weigh in on if he has time. These were found in a pile of street material in a upcoming housing development in Sarasota County. I am assuming Tamiami Formation.

 

 1. I am thinking Chicoreus floridanus but the opening looks different. On my specimen, it is fractured off a bit. 

 

 2. I am pretty sure this is Subpterynotus textilis, but being such a pretty fossil, I want to make sure. 

 

 

Correct on both counts.  The aperture looks different as much of the lip and whorl is missing.

[Coco]

Very nice shells minnbuckeye !

 

Coco

 

[jcbshark]

I’m thinking 3 is a horse tooth and I think you’re right in 4 being a fish vert. Nice finds Mike 

[minnbuckeye]

Thanks, @jcbshark! Thanks, @MikeR!

 

 

16 hours ago, Coco said:

Very nice shells

I totally agree @Coco! Florida has the nicest mollusks and gastropods with so many variations and so well preserved. Every trip I make to Florida results in new species which had not been found before.

  

Mike

[Shellseeker]

On 11/27/2020 at 12:48 PM, minnbuckeye said:

This looks like a horse tooth to me but MUCH smaller than ones I have found before. Jack, this one is for you! 

 

MUCH smaller ,  Mike is that a universal measurement unit??..  Millimeters count when distinguishing between species. You have a lower right jaw p2 or m3.  I think m3. Note that the difference between Nannippus and Aztecus is 3 mm. Your tooth looks larger than Nannippus would be.

 

The fish vert is from a filefish.

 

On number 5 , is it 1 fat root forward and 2 smaller in the rear. ?

On 11/27/2020 at 12:54 PM, minnbuckeye said:

7. Jack, did you have an opinion of this from my last post. When you asked, I mentioned it does have small serrations. 

They tell me that my Isurus hastalis  teeth are now Carcharodon hastalis because they are related to Great Whites.. You have a little 'edge" on the tooth, and then some worn serrations.... I would say that it is a Great White.

[Shellseeker]

#5

EDIT, Should have copied photos instead of linking to sellers website:

Tapir Premolar Tapirus veroensis Pleistocene  North Florida

 

#6 The longitudinal lines are concerning, but it could be Scaldicetus.

https://www.researchgate.net/figure/Scaldicetus-minor-MRSNT-PU-13862-6-enamel-caps-of-teeth-from-the-Pliocene-of-Astigiano_fig17_307695656

[minnbuckeye]

@Shellseeker, your responses are VERY helpful! 

 

"Horse Tooth" is 17 mm by 5 mm at the crown. That doesn't seem to help differentiate. 

 

8 hours ago, Shellseeker said:

The longitudinal lines are concerning

What do you mean by concerning? There are definite longitudinal lines. 

 

8 hours ago, Shellseeker said:

On number 5 , is it 1 fat root forward and 2 smaller in the rear. ?

Yes,  smaller hind roots are more like nubbins, 1/10th the size of the big root.

[hemipristis]

On 11/28/2020 at 3:48 AM, minnbuckeye said:

 

 4. Is this a bony fish vertebrae or shark. I am betting on fish.

  

  

 

 

I believe this to be from a bluefish, Pomatomus saltatrix. Photo courtesy of elasmo.com

 

[minnbuckeye]

Thank you @hemipristis. Looks like a great match!

[Shellseeker]

11 hours ago, minnbuckeye said:

@Shellseeker, your responses are VERY helpful! 

 

"Horse Tooth" is 17 mm by 5 mm at the crown. That doesn't seem to help differentiate. 

 

What do you mean by concerning? There are definite longitudinal lines. 

 

Yes,  smaller hind roots are more like nubbins, 1/10th the size of the big root.

 

 

1) 17 mm would seem to eliminate a bunch of small horse teeth present in Florida that tend to be larger:

 

Your tooth as an m3 is small enough to be in a Nannippus range. It is unfortunate that the chewing surface is covered with matrix. Here is one of Hulbert's Nannippus charts. Unfortunately on the upper P3-M2 molars.  A lower m3 would be larger that the upper middle molars within a species.

 

Net: Just by size , you almost certainly have a Nannippus genus.

peninsulatus is the more recent Nannippus to go extinct.

 

 

2) I have developed a tendency to not identify a fossil as whale tooth that is missing horizontal banding.  The fact that there are no horizontal bands means that I have to be concerned by many other options that can have longitudinal lines on an enamel tip. Croc, gator and a number of predator canines come to mind.

3) It is a Tapir premolar.

 

Nice finds,  Mike