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Showing results for tags 'north china'.
Found 5 results
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late carboniferous/early permian, north china, plants for ID.
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- carboniferous
- north china
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found in Shanxi of North China, Taiyuan Formation ( late carb/early p) . The flank is bulged,, with rather prominent nodes lined up in the middle. It looks like an internal mold. round or ecliptcal whorl section is very rare ( almost exclusively endolobus) , yet endolobus is only found in south china, and with no nodes. please give me some clue if you could
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- early permian;
- endolobus;
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It is in Yangquan, Shanxi province, which is a known for its CP coal mine ( the best in China) and fossils. This is the well known Taiyuan Formation (late philadelphian, late C early P) . Tons of marine stuff, you have to literally walk on the crinoids and brachiopods calcite, yet a few dozen meters away you see the land plant fossils like cordaits. I saw crinoid stem pieces in all shaps, round rings, roud rings with radiant rays, eclips rings, penta rings, and square and rectangle pieces ( one in the foto), as well as internal molds. They are every where scattered. I have little knowledge about it. I wonder if I could get any help here, like possible ID, or if there is any on-line place to learn. I only have some generic paleotology book and a small chapter on crinoids fossils, and only a few sketchy words for crinoid stem in CP period.
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the two pieces are from the same site in Yangquan, Shanxi provinc of north China, pretty close to Taiyuan. It is a well known site for its CP layers. It is the Shihetze formation ( mid Permian) with all other typical CP plants. The first piece was once IDed as Sphenophyllum sino—coreanum, which is common. But the vein is vague, which is typical for fossils from this site, as the whole preserved frond tissue is rather thick. The major difference between Sphenophyllum speciosum( a typical Gandwanan element) and Sphenophyllum sino—coreanum ( a common North China thing) , is that the former has less veins (<20 at the apic) , and they run paralel to the side (instead of running to and off the edge). when I look at another piece, the leaves look like a text book case for the Sphenophyllum speciosum. Can some expert please enlighten me on this?
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- North China
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I was give these two pieces by a frirend who cliamed they are both from the same Shanxi formation ( lower permian, like missisippi in US) in Yangquan, a well known coal mine in North China. He said they are just two pierces of the same thing ( Lepidodendron oculus felis). I found it hard to swallow, as the two pieces look rather different. however after some digging into literrature, it seems he is backed by many old scholars (not all, though) including Kawasaki, Stockmans and Mathieu. The last two pics I got from an old book, which look rather similar to mine, are considered by these researchers as belonging to the same species, although they are rather far between in loacation and age ( from upper carbon to upper permian). please enlighten me.
