241 replies to this topic

[Ludwigia]

Shamalama, on 04 September 2010 - 05:30 PM, said:

You'll have to start posting some of the fossils you have from the European layers. The Devonian is my favorite period of the Paleozoic because so much is happening!

I just remembered, I posted a couple of threads about it for Steinkern. I'm afraid it's a foreign language, but the pictures tell a lot. Here are the links:

http://www.steinkern...7718&highlight=

http://www.steinkern...7724&highlight=

[Ludwigia]

And if you go here:

http://www.steinkern...83a8bc9f613b667

you'll find tons of threads on the european Devon.

Best wishes, Roger.

[Shamalama]

Thanks for the Eridophylum pics, they are very nice. I hope you got to take the matrix specimen in the second pic home with you. That is a ncie one. The thread links will be good reading for a nice day off today!

[Ludwigia]

Shamalama, on 06 September 2010 - 10:17 AM, said:

Thanks for the Eridophylum pics, they are very nice. I hope you got to take the matrix specimen in the second pic home with you. That is a ncie one. The thread links will be good reading for a nice day off today!

Glad you liked the pics. No, I'd love to have taken them, but I was already starting to think about overweight baggage! As it was, I had to pay an extra 94 bucks. Should I post here anyway, or is that enough for you? I'd just be repeating my self in our native language and showing basically the same pics.

I'm still busy preparing my finds. Here comes some more stuff.

 P1020686(1).JPG   483.87K   2 downloads
These Brachies look a bit too fat to be thedfordensis. Could they be Mucrospirifer mucronatus? Widder by the river.

 P1020704(1).JPG   489.23K   6 downloads
I'm stumped on these ones. The bottom 2 are the same species with different viewpoints.

 P1020699(1).JPG   489.14K   6 downloads
Could this be either Heliophyllum or Heterophrentis, or is it something else again?

 P1020697(1).JPG   487.19K   1 downloads
Side view of the coral above.

[Ludwigia]

Now some of what I believe to be Favosite corals from the south pit.

 P1020688(1).JPG   487.32K   2 downloads
Favosites turbinatus or emmonsi?

 P1020690(1).JPG   485.17K   2 downloads
reverse side

 P1020693(1).JPG   486.03K   2 downloads
This looks rather Bryozoish(can you say that?) but I think it's Favosites placenta.

 P1020695(1).JPG   487.82K   4 downloads
reverse side

[Northern Sharks]

Roger: You really cleaned up at HH. Fortunately you left some for me. I was there yesterday with Peter and came home with 7 new species for my collection, including my first blastoids. As for your finds, what I can say are the larger mystery brachs are Atrypa reticularis, and the smaller, triangular ones are Cyrtina. They used to be Cyrtina hamiltonensis, but have been divided up into several species now
http://deepblue.lib....481/2/ID331.pdf
I'm not too up on my corals, but the one does look like H.halli. The colonial ones look like Favosites, but there is no F.turbinatus in your group. That type looks like a horn coral, but with the "honeycomb" on the end. You may want to try this site:
http://strata.geolog...basin/index.php
Use the search feature and search by formation, either Arkona or Widder (incldes Hungry Hollow mbr). If you click on the"educational links" on the right hand side, it will link you to various papers on the species

[Ludwigia]

Thanks for the links, Kevin. I'll carry on from here...

Glad to hear you were successful. Yes I was thinking of you as I left a few things behind

Best wishes, Roger.

[BobC]

I love the botton coral! Those guys are cool! I love all of it--but I've never seen those before!

[Ludwigia]

BobC, on 06 September 2010 - 01:19 PM, said:

I love the botton coral! Those guys are cool! I love all of it--but I've never seen those before!

I guess you mean button coral. Here's one for you plus a little crinoid part.

 P1020747.JPG   1.03MB   3 downloads
Microcyclus thedfordensis

 P1020746(1).JPG   974.5K   2 downloads
Arthroacantha carpenteri

[Shamalama]

Rodger,

I think all Mucrospirifer from Arkona are considered thedfordensis. Personally I think they are all mucronatus but that is more due to me being more familiar with the latter name. I have no idea what the specifics are to distinguish thedfordensis from mucronatus.

You got a couple of good Atrypa there, the larger may be a Pseudoatrypa (or Desquamatia if your in Europe). You found some larger Cyrtina, good job! I only found little bitty ones in the buckets of soil I brought home. I thought there were at least two species I found, each with slightly different sizes/shapes to the shells.

The way I determine if a horn coral is Heliophylum halli is if you see a curved lip and horizontal "spacers" between the septa. Other species of horn coral don't seem to have them, or at least not as profusely.

Check out Crinus' web site at this link for a good pic of a Favosites turbinatus. He has quite a good collection from Arkona but sadly only a portion is up on his site. If you haven't seen it already, look at the Cladopora pics. He soaked that out and glued it all back together. I am so jealous.

I'll toot my own horn also and point you to a blog post I did in May about some Favosites turbinatus that I've found in Arkona and the Louisville, KY area.

Edited by Shamalama, 07 September 2010 - 03:53 PM.

[Northern Sharks]

Shamalama, on 07 September 2010 - 03:46 PM, said:

Rodger,

I think all Mucrospirifer from Arkona are considered thedfordensis. Personally I think they are all mucronatus but that is more due to me being more familiar with the latter name. I have no idea what the specifics are to distinguish thedfordensis from mucronatus.

Mucrospirifer arkonensis is found in the Arkona formation (it's the one on the hash plates as well). Mucrospirifer thedfordensis is Hungry Hollow and Widder. If there are additional species, I can't tell them apart either

Edited by Northern Sharks, 07 September 2010 - 04:03 PM.

[Shamalama]

Aha! So the really elongated and thin shelled Mucros found with the Tentaculite hash are Mucrospirifer arkonensis? Cool, I can finish that label now. Thanks Kevin!

All this talk of Arkona is making me want to drive up again. How is the late September-October weather up there and is the river low enough to cross on foot?

[Ludwigia]

Shamalama, on 07 September 2010 - 07:37 PM, said:

Aha! So the really elongated and thin shelled Mucros found with the Tentaculite hash are Mucrospirifer arkonensis? Cool, I can finish that label now. Thanks Kevin!

All this talk of Arkona is making me want to drive up again. How is the late September-October weather up there and is the river low enough to cross on foot?

You can never tell...but bring your waders just in case Thanks for all your comments on the fauna and also for the links. That's helping me along here. I'm just about done with my H.H. finds now. Just a couple more things to post, which I'll do in a minute.

Kevin: I've decided to stick with thedfordensis for the Widder ones from this site. The forms are just as varied as mucronatus and they all look the same as far as I'm concerned.

Now the postings. Bryozoans.


 P1020712(1).JPG   490.98K   3 downloads
I'll go for Fenestella sp. here.

 P1020716(1).JPG   488.16K   4 downloads
This could be Stictoporella, if they still existed at this time. Joe has one on his web site which looks quite similar. Thing is, it's from the Ordovician.

 P1020720(1).JPG   488.98K   2 downloads
Halopora sp.??

 P1020714(1).JPG   489.3K   9 downloads
Nice, but I have no idea.

[Ludwigia]

Just rounding things up now.


 P1020718(1).JPG   492.3K   5 downloads
I think these are small bits of Favosite coral.

 P1020744(1).JPG   491.06K   6 downloads
Now I'm not sure what this is. 1/2 inch diameter. Found at the south pit.

 P1020745(1).JPG   487.05K   4 downloads
Platyceras arkonensis

 P1020763.JPG   168.32K   4 downloads
Some nice hash with Tentaculites on Mucrospirifer arkonensis.

[Northern Sharks]

Shamalama, on 07 September 2010 - 07:37 PM, said:

Aha! So the really elongated and thin shelled Mucros found with the Tentaculite hash are Mucrospirifer arkonensis? Cool, I can finish that label now. Thanks Kevin!

All this talk of Arkona is making me want to drive up again. How is the late September-October weather up there and is the river low enough to cross on foot?

Dave: weatherwise, you should be fine, if it stays dry. Last year we were there in mid-November, and quite comfortable in long shirt sleeves. I was just there this past weekend with Peter, and we could cross the river from the north pit without any wet feet at all. Much faster than that hike along the riverbank from the south pit. That is a very hectic time for me, but don't let that stop you. Let me know if you do decide to come up and I'll try to sneak out for a day

[Northern Sharks]

Roger: more nice pieces. I can't give you much help with the bryozoans, all I can say is check the UMMP site. What is the size of the "nice, but I have no idea" piece. The one bad thing about Hungry Hollow is that so much of the stuff is fragmentary. I don't know how many additional species I'd have if I picked up each different piece, rather than saying "I'll find a bigger piece later" - that doesn't always happen

[Ludwigia]

I was just on my way to bed, but I thought I'd check in one last time.

Kevin, the "nice" piece is 6x5cm.

G'night.

[Northern Sharks]

As I stated earlier, I found my first Arkona blastoid(s) this past weekend. Now that I have an ID, here's the pic. I found a second, larger one, that looks to be the same species, but it is somewhat compressed and with a bit of damage. This one is a beauty

Attached Files

•  nucleocrinus.jpg   270.29K   9 downloads

[Ludwigia]

Northern Sharks, on 07 September 2010 - 11:47 PM, said:

This one is a beauty

You are right!

[Shamalama]

Kevin, Nothing set in stone right now but I will let you know when things get rolling. Nice Blastoids, you must have been crawling the piles.

Rodger, Did you find any Alveolites sp. corals in the HH? I'd say a 1/5 of what I found in that was Alveolites, 1/5 Heliophylum, 1/5 Cystiphyllum and 1/5 Favosites with the remainder being various other genera.

Trying to figure out the individual species of Favosites is very difficult and will require very close study and thin sections. The small pieces in your above pic could be Favosites nitella but there is another species that I can't think of the name right now.

Could the mysterious 5-6mm item be a Crinoid plate?