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Showing results for tags 'oxfordian'.
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From the album: My collection in progress
Cleoniceras sp. Parona & Bonnarelli 1895 Location: Atsimo-Andrefana, Madagascar Age: 157 - 155 Mya (Oxfordian, Upper Jurassic) Measurements: 4,5 cm (diameter) Kingdom: Animalia Phylum: Mollusca Subphylum: Conchifera Class: Cephalopoda Subclass: Ammonoidea Order: Ammonitida Suborder: Ammonitina Family: Hoplitidae The ammonite is iridescent. In some parts is visible the elaborate ammonitic suture pattern. -
Hi everybody, i need help to identify that Oxfordian Perisphinctidae i found yesterday in a quarry of Charente, South-West of France. I think it could be a Zigzagceratinae indosphinctes, but that's only a supposition. I also thought it could be a choffatia, but i don't know if they can be that big (an important part of it is lacking) as you can see on the second pic with my friend's hand as scale. The scale on the first pic is in inches. Thank you for your help.
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- oxfordian
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Gastropods with calcite crystals from Oxfordian stage (163,5 mln years)
Svetlana posted a topic in Member Fossil Trades Bulletin Board
Hello everyone. I offer interesting gastropods with calcite crystals - perhaps someone will be interested I have a lot of them. Pseudomorphoses of calcite after gastropod shells of the genus Nerinea from Upper Jurassic limestones of the Oxfordian stage (Izyum Formation J2-3iz); 163,5 mln years. Ukraine, Donetsk region. I'm interested in everything - I invite you to private messages Have a nice day VID_20220122_135535.mp4 VID_20220122_135732.mp4 -
Hi all! This is a small trip report from a quarry by the town of Mikhaylov, Ryzan Oblast, situated in 200 km from Moscow. The place is very well known among the public interested in fossils, especially ammonite collectors. There are 4 quarries in a tight group, operated by different companies. Mikhaylov quarry is the most famous of them. The experience is very similar to that of other Callovian - Oxfordian quarries (in my previous reports), but ammonites suddenly take the place of gastropods! Pretty exciting, isn't it? Unfortunately there are not many spoil piles as Jurassic overburd
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Taxonomy according to Hao et al 2009. Hao et al. 2009, p223: “Revised diagnosis: Body length: 6-13 mm: wing length 8.2-15.6 mm Sc ending at wing margin approximately the same as R4+5 forking into R4 and R5; R1 long, r-r at one -third of its length before the end of R1; R2+3 shorter than R3; R4+5 short, R4+5 fork six times longer than dR4+5. M1 smoothly curved, m-m joining close to M1+2 bifurcations. M3+4 with a little bend at m-m. CuA slightly sigmoid beyond m-cu; A1 strongly curved to wing margin in two-thirds of its length.” Wing line drawing from Hao et al. 2009, p.225:
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- tff-oilshale-ar2535
- inner mongolia
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My first hunt at Liesberg, Switzerland, on October 24th
pachy-pleuro-whatnot-odon posted a topic in Fossil Hunting Trips
Last sunday October 24th I decided to visit the old Andil clay quarry at Liesberg in Switzerland, just over two hours driving from where I live, to see what fossils I might find there. Now a nature reserve where collecting is tolerated as long as the natural parts are not disturbed, the deposits at this quarry, mined for cement production between 1934 and 1980, date to the Upper Callovian and Lower to Middle Oxfordian (source). It is thus stratigraphically - though not petrologically - comparable to the geology of Vaches Noires in Normandy, with which I'm much more familiar, albeit with the in- 18 replies
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- sea lilies
- jurassic
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From the album: Russian Upper Oxfordian ammonites
Difference between Amoeboceras alternoides (alternoides zone, below) and serratum (serratum zone, above). The latter is younger. Moscow Oblast, Bronnitsy, Markovo/Rybaki- 1 comment
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- amoeboceras
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From the album: Russian Upper Oxfordian ammonites
Amoeboceras alternoides, Moscow Oblast, Bronnitsy, Markovo, alternoides zone. Fully pyritized -
From the album: Russian Upper Oxfordian ammonites
Amoeboceras alternoides, Moscow Oblast, Bronnitsy, Markovo, alternoides zone -
From the album: Russian Upper Oxfordian ammonites
Moscow Oblast, Bronnitsy, Rybaki, serratum zone -
From the album: Russian Upper Oxfordian ammonites
Moscow Oblast, Bronnitsy, Markovo, alternoides zone -
From the album: Russian Upper Oxfordian ammonites
Moscow Oblast, Bronnitsy, Markovo, alternoides zone -
From the album: Russian Upper Oxfordian ammonites
Moscow Oblast, Bronnitsy, Markovo, alternoides zone -
From the album: Russian Upper Oxfordian ammonites
Moscow Oblast, Bronnitsy, Markovo, alternoides zone -
From the album: Russian Upper Oxfordian ammonites
Moscow Oblast, Bronnitsy, Markovo, alternoides zone -
From the album: Russian Upper Oxfordian ammonites
Moscow Oblast, Bronnitsy, Rybaki, serratum zone -
From the album: Russian Upper Oxfordian ammonites
Moscow Oblast, Bronnitsy, Markovo, alternoides zone -
From the album: Russian Upper Oxfordian ammonites
Moscow Oblast, Bronnitsy, Rybaki -
From the album: Russian Upper Oxfordian ammonites
Moscow Oblast, Bronnitsy, Rybaki, serratum zone. On matrix with imprints of outer whorls. Pyrite -
From the album: Russian Upper Oxfordian ammonites
Moscow Oblast, Bronnitsy, Rybaki, serratum zone. Phosphorite -
From the album: Russian Upper Oxfordian ammonites
Moscow Oblast, Bronnitsy, Rybaki, serratum zone. Pyrite. D 2 cm -
From the album: Russian Upper Oxfordian ammonites
Moscow Oblast, Bronnitsy, Rybaki, serratum zone. Pyrite. Siphuncle visible -
From the album: Russian Upper Oxfordian ammonites
Moscow Oblast, Bronnitsy, Rybaki, serratum zone. Pyrite. Smooth shell species -
I found this fossil gastropod on an auction site and I really liked it. But the information is a bit confusing. On the title it states that it is Cretaceous but in the description of the seller it says "Cretaceous-Oxfordian-160 MYA". Oxfordian is a period from the Jurassic, not the Cretaceous. The locality & species (theres 2 species) Location: Kostroma Region Russia Species: Pictavia laevigata & Exelissa quinariia .
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I have these unidentified ammonites, and I would like to know what they are. I believe that the second one is Desmoceras latidorsatum, comparing it with internet photos. The first one is from the Oxfordian of Charente (France), and the other I don't know. 1.- Oxfordian, Charente (France). 2.- Look at suture lines. Thanks!
