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Very Busy Hash Plate


Bev

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This is off that Hwy. 52 fossil hunt--about as big as I could carry up the hill in two, three tries :)

Ordovician Era. Platville Formation?

post-9628-0-74151600-1353801981_thumb.jpg

Here is the overview.

post-9628-0-46705300-1353802218_thumb.jpg

The back of the rock.

post-9628-0-46668800-1353802320_thumb.jpg

The large bumps, these are like an inch across, have me totally fascinated. I'm thinking some kind of brach, but I haven't seen it before so smooth...Or so many! Maybe Lyrodesma acuminatus, but it says Decorah formation and bivalve. Or bivalve Cyrtodonta billingsi and that IS Plattville.

post-9628-0-85560700-1353802553_thumb.jpg

Now, I'm thinking these are either crinoid stems or the Homotrypa minnesotensis.

Continued...

The more I learn, I realize the less I know.

:wacko:
 
 

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post-9628-0-21147200-1353803265_thumb.jpg

Here are for "bivalves"? with holes in them. No pattern to the holes though...

post-9628-0-95807600-1353803358_thumb.jpg

The other end of the bumps.

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There are definitely crinoids here!

I appreciate you all taking a look at this! ;)

Any ideas, suggestions, whatever, I'm open. I'm honestly trying to learn and make educated guesses :)

Thanks for looking.

Bev :)

The more I learn, I realize the less I know.

:wacko:
 
 

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Hash plates are fun to prep, you never know what might show up. Might try a few drops of Lime-a-way to remove the matrix first. Very interesting plates.

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Well, I carried it off the Thanksgiving table and it IS out in the weather!

Thanks, Guys, for commenting!

Bev :)

The more I learn, I realize the less I know.

:wacko:
 
 

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Rockwood, you must not have seen my Boneyard post! Yes, I have a rock garden :)

The more I learn, I realize the less I know.

:wacko:
 
 

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Hey, anyone, PLEASE take a stab at what these might be in your opinion!

Like, are those crinoid pieces or bryzoa?

Do YOU think those 1 inch thingys are bivalves?

Are the pics bad? I'm so curious about these two points... I'm in a whole different area than what I have been hunting...

Bev :)

The more I learn, I realize the less I know.

:wacko:
 
 

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Hi Bev ...

Your pictures are just fine.

We are dealing with hash plates...Lets make things a little more simple

Below are 5 pictures with Blue highlighted squares around specific fossils in question

Members can reply with their suggestions to what each fossil represents by referring

to the numbered images.

1

TFF_1A.jpg

2

TFF_1B.jpg

3

TFF_1C.jpg

4

TFF_1D.jpg

5

TFF_1D2.jpg

Edited by Indy

Flash from the Past (Show Us Your Fossils)
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I'm most familiar with Mississippian and Pennsylvanian fossils

However, I'll take a stab at some general IDs

Image #1: Crinoid stem segment

Image #2: Not enough of the fossil visible for an ID

but does remind me of horn coral ... but its probably not.

Image #3: (boxed area on the right) ... branching bryozoa

Image #4: The suggested ID of bivalves with holes.

If they are bivalves ... the holes might represent parasitic borings

possibly made by boring sponge. Let me add that I don't see

"obvious" bivalve.

Image #5: 2 brachiopods and immiately above ... crinoid stem segments

"Just my 2 cents"

If you really find the hash plate fascinating ... You might not want to consider

any preparation (most likely you won't be impressed) ... If exposing more

is of interest ... the suggestion about placing it outside and let Mother Nature

prepare it ... should be considered.

Edited by Indy

Flash from the Past (Show Us Your Fossils)
MAPS Fossil Show

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Oh Barry, I APPRECIATE YOU SO MUCH! Did you do that with your cropping software?

Glad to know that those are bryzoa, some one thought crinoids and I just didn't see it.

The brachs are brachs... Not of much interest to me at this point.

That round thing though... Has me fascinated... Will try some muratic acid on it :)

Having computer problems. Keeps kicking me off... So I can only do things in short stretches.

AGAIN THANK YOU!!!!!!!!! YOU'RE MY HERO! Bev :):wub:

The more I learn, I realize the less I know.

:wacko:
 
 

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Did you do that with your cropping software?

YEP ....

And you now can do the same...Just try out that website I sent you.

Just play around and see for yourself...You don't have to do so with

intentions of posting anything ... just for practice to see the results.

You can always Right Click and Delete images you don't want to save.

PS: I don't think you're going to be pleased with acid preparation.

However, nothing ventured...nothing gained...and would be a good

learning experience.

Edited by Indy

Flash from the Past (Show Us Your Fossils)
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Barry, you are anti acid... I haven't tried it yet. Any particular reason? Will it dissolve the fossile? :blush:

The more I learn, I realize the less I know.

:wacko:
 
 

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Barry, you are anti acid... I haven't tried it yet. Any particular reason? Will it dissolve the fossile? :blush:

I've been preparing fossils for many years.

I'm not "anti" anything regarding fossil preparation.

My advise to everyone interested in fosssil preparation is ....

Try out whatever technique of interest first on fossils you don't care about.

EVERYONE who prepares fossils has war stories of ruining some of their

best fossils.

Soooo ... I'm just suggesting your mental image may very well be different

than the actual results. Find a piece of the same matrix you really don't care about

and experiment. See for yourself. I no longer give fossil preparation advise beyond

tooth brush and water.

:P

Not all fossils need preparation ... Beauty is in the eye of the beholder.

Some of my favorite fossils are fossils prepared by Mother Nature.

Take before and after preparation pictures ...

Makes for a good post

:D

Flash from the Past (Show Us Your Fossils)
MAPS Fossil Show

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acid will dissolve the matrix but it will also remove the fossils also.

Edited by Herb

"Absence of evidence is not evidence of absence"_ Carl Sagen

No trees were killed in this posting......however, many innocent electrons were diverted from where they originally intended to go.

" I think, therefore I collect fossils." _ Me

"When you have eliminated the impossible, whatever remains, however improbable, must be the truth."__S. Holmes

"can't we all just get along?" Jack Nicholson from Mars Attacks

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Barry, you are anti acid... I haven't tried it yet. Any particular reason? Will it dissolve the fossile? :blush:

Acid doesn't work too well for this formation. The fossils in the Platteville, and Galena Formations are generally not silicified so the acid will dissolve rock and fossil without discrimination.

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Hi Guys,

With Indy's help leading me to this link http://www.thefossilforum.com/index.php/topic/26385-flash-from-the-past/ Flash from the Past--INCREDIBLE lists with pics of fossils! I will be spending much time here!

I think I found the #2 round one on the top of the Bryosoans list. I believe it to be Prasopora.

And the framed #4 pic is probably Trpanite borings into the Prasopora. A trace fossil.

So, the mystery is solved, I think :)

Thanks to EVERYONE for looking and making suggestions and comments! Especially Barry for this incredible link! I'm not sure how to do links so I just copied from the whatever it is called that starts with http...

Again, THANK YOU ALL!

Bev :)

The more I learn, I realize the less I know.

:wacko:
 
 

Go to my

Gallery for images of Fossil Jewelry, Sculpture & Crafts
 

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