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Rudist hunting (5) in St. Bartholomä, Styria, Austria (Gosau-group, Campanian)


FranzBernhard

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Hello,

Another hunting trip for rudists to the Campanian of St. Bartholomä in western Styria, Austria (09/15/2019). I have hunted these heaps of stones, collected from the former nearby fields (now meadows) over centuries, several times before, but there seems to be always something to find. I found six "good" specimens in 2 hours - and that´s exactly my usual yield in this formation :D.

First topo map, geological map, relief map and aerial photograph of "Point 32". No problem to make everything public, nobody is interested in this stuff (well, except me...;)).

Punkt32.thumb.jpg.470b303a93abfb5f49ff4eda71d6b540.jpg

 

Views from my parking place and from the way to the heaps:

32_Parkplatz_2_15092019_kompr.thumb.jpg.8e3ca8a65aa8e08f9928917227741b93.jpg

32_Parkplatz_1_15092019_kompr.thumb.jpg.c95ed96088b5e35caa576ad7348592ab.jpg

32_Zugang_15092019_kompr.thumb.jpg.1b231fc2426c30d62e367cd62dc0dcc1.jpg

 

Some impressions of the heaps.

First row is the western, lowermost end of the east-west trending with a small dig. A small, but quite nice radiolitid from this hole is to the left of the pocket knife. A second radiolitid was also found there.

Second row shows some parts of the upper, north-south trending heaps.

Third row shows to the left a fragment of a Hippurites nabresinensis (nearly in-situ, a small part was exposed). To the right, a freshly exposed, but still nearly in-situ Vaccinites is visible to the right of the red object; a small part of this rudist was also already exposed. Its the area shown in the pic above. Well, no pocket knife, already lost...

32_Zusammenstellung_15092019_kompr.thumb.jpg.57ac494f2ee0a13b37ee960ca14c7a58.jpg

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Here are the fossils in more detail:

Radiolitide_32_4313_4314_kompr.thumb.jpg.32a6d225e1c4f823615c252ae010c2da.jpg

Two small radiolitid rudists from the dig hole. Both have the upper valve attached and show quite nice ribs. The left one also still has the radial bands, one in the center and one to the right.

 

HippuritesNabresinensis_32_4319_kompr.thumb.jpg.b5e25cafd3297487d6d96be8f7124082.jpg

Fragment of Hippurites nabresinensis. First I thought I would like to cut it, but now I don´t like to cut it any longer. Pillars are quite well visible at the bottom of the right pic (adapical view). Maybe it also has some small remnants of the upper valve, but its not photogenic there...:D

 

Vaccinites_32_4312_kompr.thumb.jpg.3924db6754b1cbbb38da6697c2316924.jpg

Vaccinites sp. No pillars visible, but I think it is a V. vesiculosus. It looks ugly and butchered (it is!!), some shell is missing and it has some rock attached to it. But its also something special and rare for the formation: Its nearly completely preserved from the apex toward its upper end and the upper valve is also partly there! It is also bend by about 90°, but that´s not rare. Lower right pic shows some details of the upper valve with some remnants of the reticulated pore layer.

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Other specimens I took with me:

HippuritesColliciatus_32_4311_kompr.thumb.jpg.6749097d3e7c440f63a567ff8bb4697a.jpg

Long fragment of a Hippurites colliciatus.

 

Radiolitidsegment_32_4315_kompr.thumb.jpg.5dfb21eaa7b7c5c0af2f53c76fd58950.jpg

And a segment of a radiolitid rudist with quite well preserved ribs, inner shell layer and ligamentary pillar.

 

This few specimens are quite representative of the rudist fauna of this formation, so I am quite happy with the result of this hunting trip.

Btw, I visited this site again yesterday, see FOTM entry...;)

Thanks for looking and happy and save fossiling!
Franz Bernhard

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Another fine report, Franz!

Thanks for posting it. 

Lovely finds! :) 

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    Tim    -  VETERAN SHALE SPLITTER

   MOTM.png.61350469b02f439fd4d5d77c2c69da85.png      PaleoPartner.png.30c01982e09b0cc0b7d9d6a7a21f56c6.png.a600039856933851eeea617ca3f2d15f.png     Postmaster1.jpg.900efa599049929531fa81981f028e24.jpg    VFOTM.png.f1b09c78bf88298b009b0da14ef44cf0.png  VFOTM  --- APRIL - 2015  

__________________________________________________
"In every walk with nature one receives far more than he seeks."

John Muir ~ ~ ~ ~   ><))))( *>  About Me      

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Good show. Great finds. Thank you.

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Mark.

 

Fossil hunting is easy -- they don't run away when you shoot at them!

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I love rudists and thank you for sharing your trip!

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-Dave

__________________________________________________

Geologists on the whole are inconsistent drivers. When a roadcut presents itself, they tend to lurch and weave. To them, the roadcut is a portal, a fragment of a regional story, a proscenium arch that leads their imaginations into the earth and through the surrounding terrain. - John McPhee

If I'm going to drive safely, I can't do geology. - John McPhee

Check out my Blog for more fossils I've found: http://viewsofthemahantango.blogspot.com/

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On 23.9.2019 at 4:17 PM, Fossildude19 said:

Another fine report, Franz!

Thanks for posting it. 

Lovely finds!

 

22 hours ago, Mark Kmiecik said:

Good show. Great finds. Thank you.

 

20 hours ago, ynot said:

Great report.

Thanks for sharing.

 

7 hours ago, Monica said:

Beautiful scenery mixed with fossil finds - a perfect day!  Congrats, Franz!

 

4 hours ago, Shamalama said:

I love rudists and thank you for sharing your trip!

 

Thanks for all your kind words and all your appreciation!

 

Franz Bernhard

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I have to say that each time I am in awe at the quality specimens you collect from those seriously lacking exposures.....I should never complain about a rock exposure my way again lol. Great finds :thumbsu:

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On 25.9.2019 at 12:05 AM, Al Tahan said:

Great finds

Thanks!

 

On 25.9.2019 at 12:05 AM, Al Tahan said:

I should never complain about a rock exposure my way again lol

What the heck is an "exposure"??:headscratch: :D

Franz Bernhard

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  • 1 year later...

Nice report. Cracking rudists. :wub:

I somehow missed this one first time round. :)

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Life's Good!

Tortoise Friend.

MOTM.png.61350469b02f439fd4d5d77c2c69da85.png.a47e14d65deb3f8b242019b3a81d8160-1.png.60b8b8c07f6fa194511f8b7cfb7cc190.png

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Thanks for freshening it up Tidgy's Dad! Wish we had abundant rudists here in NC. Am fascinated by them.

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