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Pippa

7 items in need of ID

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Pippa

These are eight finds that have me scratching my head.  Please help me identifying them. 

Some are so very worn, please feel free to just guess.

 

#1:  "Oddball".   

Feels glassy, hard. Inside, I can't see much further by eye than what's visible in the photo. Just more of the hardened lentil soup.....

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#2:  "Mystery Shape"   

While it looks grainy, it actually feels really smooth and hard. It reminds me of a mollusk shell cut at a slant?  Or an extremely wide spaced chain coral?

I love its elegant shape. 

Oh, and it's about 2cm long.

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#3:  "Bandaged Dude"  

Is it possibly a bryozoan "sheet" that's draped over something else?

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#4:  "Spiral Stairs to Nowhere"

I split a piece of limestone and several of these became visible, each in its own empty casket. Doesn't look like a crinoid stem.

(Sorry about the out-of-focus, bad quality photo, alas, it was taken in fading light without a tripod) 

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#5: "Zigzag Doodle"  

I promise, it wasn't me who defaced this rock... 

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#6: "Gas Bubble"

This thing has very thin but hard and very sharp edges. It's about 1cm deep, yet, it weighs all of 5 grams. I have the beginning of a paper wasp's nest of about the same size, which weighs about 1 gram.  So it's barely heavier. 

Also, what might the small egg-shaped things be which are visible in the bubbles? Worms?

 

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#7: "Metallic Paper Fringe" 

The slight metallic sheen isn't visible on the photo. Anyhoo, I can't even guess.... 

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Fossildude19

1 - agate or chert

2 - ?

3 - Bryozoan colony

4 - internal cast of crinoid lumen. 

5 - brachiopod or bivavlve shell in cross section.

6 - gas bubbles in volcanic rock.

7- cross section through crinoid  (bottom left) partial rugose coral (upper right)

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daves64

#1 Could be Carnelian agate.

#4 Looks to be an internal mold of a crinoid stem.

#7 Looks like an angled cross section of a rugose coral.

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Pippa
On 11/6/2019 at 10:26 AM, Fossildude19 said:

1 - agate or chert

2 - ?

3 - Bryozoan colony

4 - internal cast of crinoid lumen. 

5 - brachiopod or bivavlve shell in cross section.

6 - gas bubbles in volcanic rock.

7- cross section through crinoid  (bottom left) partial rugose coral (upper right)

 

On 11/6/2019 at 10:29 AM, daves64 said:

#1 Could be Carnelian agate.

#4 Looks to be an internal mold of a crinoid stem.

#7 Looks like an angled cross section of a rugose coral.

Thanks guys for your input.

1 - I had figured it's an agatized fossil of some kind. My reasoning: All raw agates I find have sharp corners and straight edges. This one is so very differently shaped. I thought that maybe it could be botryoidal.  But after looking it up online, that type of crystallization is very uniform, while my oddball looks like chunks of playdough hastily put together by a toddler...  Oh well. 

2 - Not even guesses?  As chain corals are so plentiful and varied looking at the beaches, for the time being, I will just think of this as an extremely widely spaced chain coral that's very worn.  

3 - Alright!  I have one more question: Is the whole rock likely bryozoan? The pattern is found all around. Or were these bryozoans just growing over some other thing?

4 - I see! The lumen is the crinoid's nerve canal. Very helpful to know the terminology. Just found Rosemary's beautiful find by googling "crinoid lumen": 

 

 

 

5 - Doh! :DOH:  Funny, how once it's pointed out to me what I'm looking at, it becomes so obvious. How could i have possibly missed that?

6 - Oh, that's vesicular basalt? I assume the tan color is just due to weathering.

7 - Yeah, I recognized the crinoid cross section, the rugose coral just looked so differently preserved than most. 

 

Thanks again!

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