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I've mentioned that I don't get out to hunt as often as I used to, but I was off for a few hikes over plowed fields with a friend and colleague last fall and did manage to make a few finds which I'd like to show here. I've been waiting patiently until my friend had some time to let me use his prep workshop since, as I've also previously mentioned, I gave up my own workshop as a consequence of my moving house last year. I finally got down to it a couple of weeks ago and managed to salvage a few interesting Actinostreon marshii bivalves from the region around Geisingen, BW in the action. Here they are.
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- actinostreon
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From the album: Vertebrates (other than fish)
Crocodile. Back part of the lower jawbone. Found at the clay pit in Geisingen. Aalenian, Geisingen Oolith. The creature was extrapolated to be at least 7 meters long, one of the largest ever found world wide in these layers. Currently in the collection at Tuebingen for research. Update Aug.2020: I've now reassigned this to Glaphyrorhynchus aalensis with a question mark according to the most recent revisions. The above photo is of the original, the two below are of the cast.- 7 comments
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From the album: Middle Jurassic Ammonites from Southern Germany
Late Bajocian. garantiana zone. Found on a field near Geisingen, Baden-Wuerttemberg -
From the album: Brachiopoda
6cm. long. With small Beekite rings. Early Kimmeridgian Late Jurassic Found at Geisingen quarry in Baden-Wuerttemberg, Germany- 3 comments
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- colosia
- kimmeridgian
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From the album: Late Jurassic Ammonites from Southern Germany
35cm. Early Kimmeridgian From the upper Danube valley.-
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- lithacosphinctes
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Graphoceras (Graphoceras) concavum (Sowerby 1815)
Ludwigia posted a gallery image in Member Collections
From the album: Middle Jurassic Ammonites from Southern Germany
12cm. Phragmocone. Geisingen Oolite Formation concavum zone Late Aalenian Found at the clay pit in Geisingen.- 2 comments
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- graphoceras
- aalenian
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The weather suddenly warmed up for a few days and started melting the snow, so I figured I'd grab the opportunity yesterday and check out the Geisingen area as long as the weather held. It's supposed to get colder again next week, so I thought I'd try to take advantage before more snow gets dumped on us. This was my first sojourn in over a month, so I was just glad to get out into the field, even if it didn't pan out much. I'd heard that a group had been digging with some success at the clay pit, so I thought I'd have a look-see to at least assess the situation there. It turned out that the spot where they had dug was pretty obvious, but the clay from above had slid down and buried it, which would make for a days work for a group of 4. I then decided to explore the old north end of the pit in the hopes that slips had perhaps created some new exposures, didn't find any though, so I doubled back down the east edge to a spot where I'd found some loose blocks in the distant past and started scratching around a bit. Luck was with me this time in the form of a nicely weathered block which gave up 3 well-preserved ammos and a few bivalves. I was needless to say already more than satisfied with these results, but since it was still early in the afternoon, I decided to check out a field nearby which had been productive in the past. I had noticed while driving past it on the way to the pit that it had been freshly plowed. This also turned out to be a good decision. I ended up after a couple of hours with a mini sack full of ammos in varying conditions of preservation, some in matrix, some free. All in all, it was a good day, so my itch has been stilled for another month or so, I would say. I didn't think to take my camera along again , so there are no in situ pictures, but I can at least provide you with a photo of the finds and I promise to post some of them once they're prepped.
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- middle jurassic
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From the album: Middle Jurassic Ammonites from Southern Germany
7cm. Not your everyday find. Found on a plowed field in the area around Geisingen. Presumably from the romani subzone of the humphriesianum zone, Bajocian.-
- strigoceras
- bajocian
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From the album: German Gastropods and Bivalves
8cm. long. Missing a bit of shell at the end. Found on a plowed field near Geisingen. Presumably Bajocian humphresianum zone.-
- myophorella
- bajocian
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From the album: German Gastropods and Bivalves
6.5cm. long. Found on a plowed field near Geisingen. With tube worm epizoa. Presumably Bajocian humphresianum zone. -
From the album: German Gastropods and Bivalves
7cm. wide. Found in the upper Aalenian layers at Geisingen. -
From the album: Middle Jurassic Ammonites from Southern Germany
6.5cm. Found on a field in the viscinity of Geisingen. Parkinsoni zone, late Bajocian. I believe that the tube worms belong to the species Mucroserpula sp.-
- parkinsonia
- bajocian
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Calcite steinkern.
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- pleurotomaria
- g50
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This is a cast of the original which was donated to the Natural History Museum in Stuttgart.
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- bathrotomaria
- g45
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This is part of the phragmocone in steinkern preservation. The siphuncle can be seen in the second to last photo. The last photo shows a large specimen with body chamber (22cm.) and a smaller one, which is just the inner portion of the phragmocone (4cm.). Both are from the same site and zone as the first one.
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Just about complete with most of the shell intact. This is the microconch to Prorsisphinctes.
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- leptosphinctes
- a1161
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Phragmocone with shell preserved.
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- strenoceras
- bajocian
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Phragmocone with preseved shell.
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- dorsetensia
- pinguis
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This specimen with completely preserved shell was found in two pieces of matrix on a field. It was then subsequently prepared out and repaired.
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- garantiana
- bajocian
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The shell is preserved on this phragmocone.
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- graphoceras
- marginatum
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Limestone mold. This big fellow is practically complete.
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- crussoliceras
- kimmeridgian
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Limestone mold. Only the phragmocone.
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- ataxioceras
- effrenatum
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