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Showing results for tags 'france'.
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From the album: South-West of France
Scleractinian coral from the Kimmeridgian (Malm, 146-141 MY), tip of the Chay, Angoulins sur Mer, department of Charentes Maritimes. -
From the album: South-West of France
Details of the pink scleractinian coral from the Kimmeridgian (Malm, 146-141 MY), tip of the Chay, Angoulins sur Mer, department of Charentes Maritimes.-
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- charentes-maritimes
- france
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From the album: Beginner collection
Flint sponge from the Senonian (upper cretaceous, 88-65 MY), department of Loir et Cher, France. -
Hi, I would like to show you some plants that I found in the (middle probably) Bathonian of the soutwestern France, near the edge of the "Massif Central". So, I will describe the context of the find quicly : We can find some vegetals in micritic layers intercalated in sublitographic-limestone layers, very often they're fragments of lignitized wood (sometimes with a wonderful conservation and visible tracheids) but it can be reddish wood not lignitized or fragments of leaves. The first mention that I found is Monteil (1977) who indicates the discovery in a neighboring township of two leaf imprints of Otozamites sp. But this source isn't necessarily the most reliable because there are many inaccuracies or errors, but this is the only mention found this period and this area. So, for my own samples, this would be a flora from "wetlands", unusual for the french Jurassic (I believe that only one was found but a little younger, from the upper Oxfordian) and, more interesting, one (at least) of them was supposed to be Sagenopteris sp., a species of Caytoniales ("seed ferns"), never found in France. So here are the leaf imprints (or leaves) of some samples (normally the scales are correct but it is possible that I made a mistake). If someone has an identification idea or a suggestion I would be very grateful to him. 1a : Fern ? 1b 2 Fern with sporangia 3 ? 4 Fern with sporangia 5 Fern with sporangia 6 7 8 9 Fern with sporangia ? 10 Fern with sporangium 11 12 13 14 Fern ? 15
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The shell of a giant snail.
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I am hoping someone can help ID this ammonite I bought at a recent gem fair in Santa Rosa. The seller said it was a pyritized ammonite from France but didn't know anything more about it. (He had bought it from a seller from Romania and language was a barrier.) My best guess it is it is a microconch specimen from the Harpoceras genus but the growth lines aren't as sharply sickle shaped as the textbook examples I have seen. (Would you call these ribs "falcate" or "falcoid"? They look somewhere in between to me.) Also note the repeating squiggly lines running along the sides. Are these suture lines or are they artifacts of the pyritization (?) process? Thanks for your help!
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Index fossil for the davoe zone.
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Index fossil for zone and subzone. Also known as Harpoceras falciferum. Literature: Howarth, M.K. (1973): The Stratigraphy and Ammonite Fauna of the Upper Liassic Grey Shales of the Yorkshire Coast. Bulletin of the British Museum (Natural History) Geology. Vol.24 No.4 Howarth, M.K. (1992): The Ammonite Family Hildoceratidae in the Lower Jurassic of Britain. Monograph of the Palaeontographical Society.
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This species was one of the most common of its time, but nevertheless it is used as the index fossil for the subzone since its occurence is practically limited to it. It is not easy to differentiate it from the species D.athleticum, which occurs in the same subzone. One main difference is that D.commune has a more rounded whorl section than D.athleticum, which is more oval. Another is that the number of ribs per whorl by D.athleticum remains constant, whereas D.commune has less ribs on the outer whorls as on the inner ones. The first specimen is from France (4 photos), the next 2 photos show a pyritized version in a concretion from a site near Whitby, Yorks., UK as well as the cut and polished version in the last photo. Both come from the Whitby Mudstone Formation. It's always interesting to observe how the same species can be preserved so differently depending in the particular conditions under which they were fossilized. Literature: Howarth, M.K. (1973): The Stratigraphy and Ammonite Fauna of the Upper Liassic Grey Shales of the Yorkshire Coast. Bulletin of the British Museum (Natural History) Geology. Vol.24 No.4
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This specimen is missing part of the body chamber, but it displays very well nevertheless what size the shell of this ammonite had reached. This is the index fossil for the European bifrons zone. Literature: Rulleau, L. (1979): Geologie et Paleontologie des Carrières Lafarge à Belmont (Rhone), Section Geol. d. Comité d'Entreprise de l'usine du Val d'Azergues Howarth, M.K. (1992): The Ammonite Family Hildoceratidae in the Lower Jurassic of Britain. Monograph of the Palaeontographical Society.
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This is the index fossil for the variabilis zone, the lowermost biozone of the European Toarcian. Literature: Rulleau, L. (1979): Geologie et Paleontologie des Carrières Lafarge à Belmont (Rhone), Section Geol. d. Comité d'Entreprise de l'usine du Val d'Azergues Howarth, M.K. (1992): The Ammonite Family Hildoceratidae in the Lower Jurassic of Britain. Monograph of the Palaeontographical Society.
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This is the index fossil for the fallaciosum subzone. Literature: Rulleau, L. (1979): Geologie et Paleontologie des Carrières Lafarge à Belmont (Rhone), Section Geol. d. Comité d'Entreprise de l'usine du Val d'Azergues Rulleau, L. (2001): Les Grammoceratinae du Toarcien Superieur de la Region Lyonaisse, SectionGeol.d.Comité d'Entreprise de l'usine du Val d'Azergues Howarth, M.K. (1992): The Ammonite Family Hildoceratidae in the Lower Jurassic of Britain. Monograph of the Palaeontographical Society.
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A nest of 5 specimens, the largest of which has a diameter of 6cm. The whole thing measures 10x8x4cm. Index fossil for its zone. Literature: Howarth, M.K. (1992): The Ammonite Family Hildoceratidae in the Lower Jurassic of Britain. Monograph of the Palaeontographical Society.
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On another rock i brang back from Angoulins sur Mer, there was that shape. I made a little preparation in order to make visible sufficiently of it. The part i show is 4 cm of width and a little more of lenght ( the center shape + the one above and the one below). But it continues under the matrix and shows a little upper of that shape, on the left, and on the other side. I suppose it could be some kind of crustacean, but i am not sure at all. I thank you in advance for your help on this. Sophie.
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I bought some shells and the seller gave me these extras which he can't ID. Can anyone help me ID some of them? I'm guessing the long ones are Dentalium sp. but no idea about the rest.
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Limestone/calcite mold of part of the phragmocone with shell remnants. Index fossil of the coronatum zone.
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This ammonite gives its species name to the so-called "Comptum bank", which is widespread in Europe, as well as the comptum subzone. The ribs are more pronounced and the whorls are wider than by L.opalinum. Literature: Rulleau, L. (1979): Geologie et Paleontologie des Carrières Lafarge à Belmont (Rhone), Section Geol. d. Comité d'Entreprise de l'usine du Val d'Azergues Rulleau, L. (1997): Les Ammonites de l'Aalénien de la region lyonnaise, Minéreaux et Fossiles #251, Mai 1997
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I recently tried to find out in which formation this was found and discovered to my consternation that the French don't apply formation names to their lithology. The iron sulphide rich limestone matrix of the Leioceras Beds give the fossils an attractive color. Literature: Rulleau, L. (1979): Geologie et Paleontologie des Carrières Lafarge à Belmont (Rhone), Section Geol. d. Comité d'Entreprise de l'usine du Val d'Azergues Rulleau, L. (1997): Les Ammonites de l'Aalénien de la region lyonnaise, Minéreaux et Fossiles #251, Mai 1997
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A small Ammonite.
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From the album: Beginner collection
6 cm of length and 4 of width (-500 Millions of years to -455).- 2 comments
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- France
- Ille et Villaine
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From the album: Beginner collection
About 15,5 cm of length and 3,5 cm of width (-462 Millions of years to -455). -
Les Vaches Noires is a french famous hunting spot, well known for its Callovian and Oxfordian clays. Some really nice stuff has been found there end of 2016, including croc bones and teeth and plesiosaur bones. Unfortunately, I diddnt got the opportunity to go hunt there during that time. My fist opening windows was during february high tide but i didnt manage to find any reptile stuff. heres a link to the flickr album of this hunt : https://flic.kr/s/aHsktr4d4K So here a global picture of the site. Either you hunt at the bottom of the cliff or on the beach when the clay layer isnt covered by sand. On the left :the beach layer as the tide covering it back : A few in situ pictures : wood (unfortunately most of time hard to preserve) Ammonites (same, depending on the layer they belong to, they often cant be saved) A pyritized small one in situ and a few gastropods (those can be find by dozens in certain layers) Despite i didnt any reptile stuff, the hunt after cleaning appeared to be quite good. some snarge nicely preserved gastropods and bivalves. Here's an appetizer and one of the catch of the day: Gastropod "Pleurotomaria munsterii" with a crinoid article on it : Regards
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From the album: La dominelais - spring 2016
Neseuretus tristani : a trilobite found in La Dominelais on spring 2016 Ordovician, Landeilian (-460 MA)
