Jump to content

Echinoid? Coral?


BuddingPaleo

Recommended Posts

Thanks for the suggestions. :) I can make the microscope thing happen, but it'll have to wait til tomorrow.

Link to comment
Share on other sites

Another interesting thread. I'm wondering about the size for Hippoporida as Lori mentioned..seems very reasonable. I do have several gastropod overgrowth examples from the Tamiami Fm and the texture size is really really fine. I'll have to get a photo with scale. Here's a group pic of other specimens in a variety of shapes...I've not come up with ID's for them and planned to take a box of them to UF to see what I might learn from them... I'm guessing some bryozoans and maybe some are the hydrozoans.

5b6b9d41da46f_TamiamiSarasotaencrustations.thumb.jpg.e358ca2c7015ebd841be876e46ad8fb3.jpg

I'm still also wondering about the underside of your specimen and what clues it holds/what it may show as I've collected quite a few similar specimens and many contain various invertebrate fragments/traces with similar textured overgrowths/colonies. Many dont seem to have any cavity/tube/burrow at all and yet have that lumpy/cauliflower look to them.. 

 

Does look like you've have a nice assortment of other finds to play with...congrats....

 

Regards, Chris 

  • I found this Informative 1
Link to comment
Share on other sites

18 hours ago, BuddingPaleo said:

This is from 2 areas just a few sqft in size. And it's about 1/3 of my collection and I've barely scratched the surface. I'm in waaaaaaaaaaay over my head. Lol

20180808_125714.jpg

 

this has the look of quarried rock. Any chance there was a borrow pit on your property or that this was hauled in for driveway or foundation work? A great resource you have there and nice fossils.

Link to comment
Share on other sites

18 hours ago, BuddingPaleo said:

This is from 2 areas just a few sqft in size. And it's about 1/3 of my collection and I've barely scratched the surface. I'm in waaaaaaaaaaay over my head. Lol

20180808_125714.jpg

 

What you have is Ochopee Limestone, a member of the Upper Pliocene Tamiami Formation.  The large oyster is Hyotissa haitensis  and scallop is Nodipecten collierensis, both abundant in the Ochopee.  I agree with Plax, Plantguy and others that your unknown is a bryozoan.

 

Mike

  • I found this Informative 1

"A problem solved is a problem caused"--Karl Pilkington

"I was dead for millions of years before I was born and it never inconvenienced me a bit." -- Mark Twain

Link to comment
Share on other sites

2 hours ago, Plax said:

 

this has the look of quarried rock. Any chance there was a borrow pit on your property or that this was hauled in for driveway or foundation work? A great resource you have there and nice fossils.

It's definitely not quarried. It's not just around the house and drive, it's different colors and textures in different areas. You literally can't not find fossils. Now, the road is not paved out here and I do like to go out there and look, most of that is broken, because fill dirt comes in for repairs. I'm not sure why there'd be fill in the woods, and my best pieces come out of this weird clayish stuff. So it is certainly possible, but I just don't think it's likely. Is there a way i can tell for sure? 

Link to comment
Share on other sites

12 hours ago, Plantguy said:

Another interesting thread. I'm wondering about the size for Hippoporida as Lori mentioned..seems very reasonable. I do have several gastropod overgrowth examples from the Tamiami Fm and the texture size is really really fine. I'll have to get a photo with scale. Here's a group pic of other specimens in a variety of shapes...I've not come up with ID's for them and planned to take a box of them to UF to see what I might learn from them... I'm guessing some bryozoans and maybe some are the hydrozoans.

5b6b9d41da46f_TamiamiSarasotaencrustations.thumb.jpg.e358ca2c7015ebd841be876e46ad8fb3.jpg

I'm still also wondering about the underside of your specimen and what clues it holds/what it may show as I've collected quite a few similar specimens and many contain various invertebrate fragments/traces with similar textured overgrowths/colonies. Many dont seem to have any cavity/tube/burrow at all and yet have that lumpy/cauliflower look to them.. 

 

Does look like you've have a nice assortment of other finds to play with...congrats....

 

Regards, Chris 

Those are really interesting. Have you looked at them under a microscope? For those without an opening, does the lumpy coating go all the way around? The underside of @BuddingPaleo's does look a bit like shell material which would make sense for Hippoporidra.

Link to comment
Share on other sites

I'm just finishing coffee, then off to the microscope. The inside is looking interesting now that it's solidly dried out. Going to get some new pics.

  • I found this Informative 1
Link to comment
Share on other sites

Got the microscope working properly. Magnified 450x; and about the wrap around of the bumps, I'd say it goes to a rim. Noticed today the netting pattern on the underneath. That's the 2nd and 3rd pics. 1st is from the top area, from the visible pattern patch into a bump cluster. 

0809-2.jpg

0809_1.jpg

0809-3.jpg

20180809_123914.jpg

20180809_123805.jpg

  • I found this Informative 1
Link to comment
Share on other sites

3 hours ago, BuddingPaleo said:

It's definitely not quarried. It's not just around the house and drive, it's different colors and textures in different areas. You literally can't not find fossils. Now, the road is not paved out here and I do like to go out there and look, most of that is broken, because fill dirt comes in for repairs. I'm not sure why there'd be fill in the woods, and my best pieces come out of this weird clayish stuff. So it is certainly possible, but I just don't think it's likely. Is there a way i can tell for sure? 

large pieces of sharply broken limestone aren't found in the warm humid eastern USA in a natural setting. Near the surface locally occurring limestone is pocked with dissolution cavities and usually a yellow or brownish color. I'm not saying yours isn't local to your property though. Am just stating what my experience is. If your large broken hard pieces are loose in the topsoil I'd have a strong opinion that they came there as mixed fill. If you quarried them yourself making the broken jagged edges then they could be native to your place. Either way you have an excellent fossil resource in your own back yard! Wish I had a similar situation...

Link to comment
Share on other sites

1 minute ago, Plax said:

large pieces of sharply broken limestone aren't found in the warm humid eastern USA in a natural setting. Near the surface locally occurring limestone is pocked with dissolution cavities and usually a yellow or brownish color. I'm not saying yours isn't local to your property though. Am just stating what my experience is. If your large broken hard pieces are loose in the topsoil I'd have a strong opinion that they came there as mixed fill. If you quarried them yourself making the broken jagged edges then they could be native to your place. Either way you have an excellent fossil resource in your own back yard! Wish I had a similar situation...

No doubt. Either way I'm thrilled. These are just what I could manage to break away. There's a large ridge of limestone that runs about a hundred foot line or so, after flood water receeds it breaks down more of the matrix and either pieces separate on their own, or they've weakened enough in a spot that I can break them off. Then where that stops it turns into the clayish stuff on either side. Thats where the good stuff is. But the limestone is fun to dig through. There are a couple of void spots, where it's just sand and you'll find a tooth or gastropod/bivalve here and there. It's certainly fun to explore! 

Link to comment
Share on other sites

It sure does look like it. So we're gonna go with ophiomorpha with hippoporida covering? Thanks so much everyone. Learned a TON! :D

Link to comment
Share on other sites

Btw, this guy was situated next to the one we've been discussing. Thought you might find it interesting. Also a bryozoan, I believe.

20180807_124422.jpg

Link to comment
Share on other sites

that one looks like a coral filling with the coral dissolved away. Sort of a negative impression of a coral. A real freaky looking fossil! Keep in mind that this is my opinion and someone with more expertise can refute my opinion.

  • I found this Informative 2
Link to comment
Share on other sites

I thought at first it was coral, then I saw a few articles about stellate bryozoans, and they looked like this, and because it covers shell molds in spots. But I think those were extinct by this point. Probably coral then. Think you're right. 

Link to comment
Share on other sites

On 8/7/2018 at 11:34 PM, GeschWhat said:

I don't think those are fecal pellets. Crayfish and shrimp poop rod shaped structures. I think these are mud balls. This video isn't the best, but you can see how the crayfish carries mud out as it digs it's burrow.

 

I agree they are mud balls. I’ve watched them build them around here. Definitely not poop.

  • I found this Informative 1
Link to comment
Share on other sites

These may or may not be helpful.

They are older books that are now in the public domain.

 

This is a book on Tertiary bryozoa of North America. Many Bryozoa span multiple geologic periods. This is within the Cenozoic era so maybe some will be in common in the Pliocene.

https://archive.org/stream/northamericanear00canu#page/62

 

This is one for corals for the Eocene and Oligocene in North And Cental America and Cuba I think it is. Lots of examples towards the back that you could compare your corals too. Nomenclature or classifications may have changed, but it looks like a good basic resource.

https://archive.org/stream/fossilcoralsfrom00vaug#page/n359

 

  • I found this Informative 2
Link to comment
Share on other sites

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 account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...