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Hyolithes


Guest solius symbiosus

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Guest solius symbiosus

On the way back from the store today, I decided to stop by the outcrop, that I have been pulling the crinoids from for a few minutes just to have a peek.

I saw some of the usual stuff, and one partial crinoid(a few arms). I noticed a rock that had a decent sized clump of the bryzoa Constellaria. Once I got it home and put some magnification to it, I noticed that it had numerous pieces of the enigmatic fossil Hyolithes.

Various authors place the hyolithids in different Phyla, but most consider them to be molluscs.

Lexington Lm

Millerburg Mb

Fayette Co. Ky.

Ordovician

Constellaria

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A larger one displaying the flat ventral side

post-179-1213549104_thumb.jpg

Numerous hyolithids, and proto-gastropods.

post-179-1213549118_thumb.jpg

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Very cool! As is my wont when I encounter something new to me, I googled them. Enigmatic is right!

Pet Wikipedia: http://en.wikipedia.org/wiki/Hyolitha

"There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant

“Try to learn something about everything and everything about something.” - Thomas Henry Huxley

>Paleontology is an evolving science.

>May your wonders never cease!

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Thank You solius symbiosus

I am now woandering if I have seen some of these Hyolithes in the Paleozoic rock around me.

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i like those tiny gastros on the last one....neat stuff!

"Turn the fear of the unknown into the excitment of possibility!"


We dont stop playing because we grow old, we grow old because we stop playing.

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Guest solius symbiosus

I was going trough a piece of "the bryzoan bed" and found a bunch more Hyolithes, proto-gastropods, and a few nice juvenile bivalve byssonychiids

This is a pic of the bed. The bed is about 10cm thick, but it is laterally extensive.

post-179-1213621012_thumb.jpg

I'm assuming it is a byssonychiid. The only other bivalves I have found at this outcrop are internal molds, and a few casts, of modiomorphids

post-179-1213620921_thumb.jpg

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I don't know what a byssonychiid is and googling gives no results, but this Looks like an Ostracod.

KOF, Bill.

Welcome to the forum, all new members

www.ukfossils check it out.

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Guest solius symbiosus

Bill,it is a genus of the ambonychiids. Ostracods are common in this formation, but this does not have the characteristics of any I have seen. Nor, does it have a chitinous "shell". It is kind of hard to see in the above photo, but the beak is evident, as is the outline of the ambonichiids.

This is a mature specimen encrusted with cyclostomate bryzoa.

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Close up of the bryzoa.

post-179-1213659678_thumb.jpg

http://paleodb.org/cgi-bin/bridge.pl?actio...ychia%20radiata

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