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Star-Shaped Trace Fossils


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#1 piranha

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Posted 09 March 2012 - 07:34 PM

Here are two fun fossils from the Pennsylvanian Breathitt Formation in eastern Kentucky. Upon first glance they look like possible Asteriacites sp., starfish resting traces. In fact, they are Asterosoma sp., deposit-feeding worm burrows. These star-shaped ichnofossils are a welcome addition for research and study. Enjoy the new 'stars' to my collection. :D

Asterosoma.jpg

Paleoecology of an Estuarine Sequence in the Breathitt Formation (Pennsylvanian), Central Appalachian Basin
PALAIOS, Vol. 9, No. 4 (Aug., 1994), pp. 388-402 - Authors: Stephen F. Greb and Donald R. Chesnut, Jr.

#2 Auspex

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Posted 09 March 2012 - 07:53 PM

Those are nice, well defined examples; way to collect!
(This may be the first thing you've posted that I pretty much knew what it is :) )

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#3 piranha

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Posted 09 March 2012 - 08:30 PM

Thanks Chas... finally had to relieve the ichno-fever Posted Image :P

#4 Auspex

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Posted 09 March 2012 - 08:41 PM

I am at very high risk of succumbing to ichno fever; it's all too cool...ahhhh, the collection one could amass! If I had the space, I'd be all over it!

"There has been an alarming increase in the number of things I know nothing about."
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#5 squalicorax

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Posted 10 March 2012 - 10:04 AM

Reminds me of a type of feeding trace. Gathering around them from one spot. What is the matrix composed of?

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#6 piranha

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Posted 10 March 2012 - 12:43 PM

Reminds me of a type of feeding trace. Gathering around them from one spot. What is the matrix composed of?



You are correct... 'deposit-feeding worm burrows' was a vague description. Thanks for clarifying that point. Reading through the paper indicates that Asterosoma occur in claystones, interbedded sandstone / shale facies and the most robust examples found abundantly in fine-grained sandstones. Although sedimentology is not my long suit, I'd have to go with the latter in this case.

#7 astron

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Posted 12 March 2012 - 03:17 PM

Very cool additions, Scott :rolleyes:
Congratulations Posted Image

#8 piranha

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Posted 14 March 2012 - 10:57 AM

Very cool additions, Scott :rolleyes:
Congratulations Posted Image



Posted Image Thanks Astrinos Posted Image

#9 pleecan

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Posted 14 March 2012 - 11:58 AM

It is amazing that a simple brain worm can generate such exquisite complex geometric burrows....
Congratulation on the find!

Edited by pleecan, 14 March 2012 - 11:58 AM.


#10 piranha

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Posted 14 March 2012 - 04:15 PM

Thanks Peter :D

#11 mbadgwell

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Posted 17 October 2012 - 10:45 AM

I have found something I was told was a trace fossil bit still unsure. It is in slate and looks almost like a flower with petals instead of trace or star shaped
can anyone jelp

#12 Roz

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Posted 17 October 2012 - 11:47 AM

I have found something I was told was a trace fossil bit still unsure. It is in slate and looks almost like a flower with petals instead of trace or star shaped
can anyone jelp


Take some images and post them in the ID section.. There is a good chance it can be identified..

#13 Roz

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Posted 17 October 2012 - 11:48 AM

Excellent and interesting addition.. I would not have had a clue but now I
know what it is I can't believe I didn't know.. :)

#14 Terry Dactyll

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Posted 17 October 2012 - 11:51 AM

Scott... How weird being so symetrical... Ive never noticed any like that before, Very nice....

Cheers Steve... And Welcome if your a New Member... :)


#15 mbadgwell

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Posted 05 November 2012 - 05:16 AM

star shaped fossil is it plant or burrrowing worm



#16 mbadgwell

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Posted 05 November 2012 - 05:20 AM

thanks Rozelle I posted on I'd section under title
"plant or animal "

#17 mbadgwell

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Posted 05 November 2012 - 05:20 AM

thanks Rozelle I posted on id section under title
"plant or animal "

#18 Chrisw422

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Posted 06 November 2012 - 01:34 PM

Nice finds!



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