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Showing results for tags 'pleurocystites'.
Found 4 results
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Synonym: Pleurocystites robustus Billings, 1854. Alternative spelling: Pleurocystis. Taxonomy from fossilworks.org. Diagnosis (Sprinkle et al., 1985): “Theca rounded-triangular, nearly symmetrical; 3 rhombs elliptical, dichopores occupying less than 40% of sutures; periproct occupying 70% of lower side, about 680-700 periproctals, no rectal lobe, anal pyramid away from margin; ornament composed of medium growth lines and few ridges radiating to the plate sides and corners; brachioles having large groove extending up aboral side, cover plates fairly large; proximal stem slowly ta
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- katian
- simcoe group
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From the album: Echinoderm Collection
Pleurocystites squamosus (Parseley, 1982 (?)), Amecystis laevis (Raymond, 1921). There are at least 10 specimens of cystoids here, 6 Amecystis leavis and 4 Pleurocystites squamosus. The cystoids are either complete or partials. Upper Bobcaygeon Formation, Middle Ordovician. James Dick Quarry, Gamebridge, Simcoe County, Ontario, Canada. Piece is 21 cm in length and 18 cm tall.- 2 comments
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- gamebridge
- simcoe county
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From the album: Invertebrates
Pleurocystites squamosus Billings, 1874 Ordovician Bobcaygeon Formation Brechin Carden Ontario Canada- 2 comments
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- pleurocystites
- bobcaygeon
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Sometimes you get a very pleasant surprise when you get your finds home and start prepping. I was very fortunate to find two relatively complete Amecystis laevis this Saturday October 31, 2015 up at the JD Quarry near Lake Simcoe, Ontario , Canada. They most likely came out of the very top part of the BobCaygeon formation as they were both found in a recently created pile and not in situ. If not it was from the very bottom of the Verulam This picture because of the lighting used came out a bit blue. I am not the best photographer around. The specimen is on an 85mm * 66mm matrix and is 79 m
