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Showing results for tags 'lacustrine fossils'.
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A Wealth of Trace Fossils from Saskatoon, Saskatchewan!
Pseudogygites posted a topic in Fossil Hunting Trips
Another day of great finds in Saskatoon! This time, some trace fossils. With my wonderful collaboration with the University of Saskatchewan's Museum of Natural Sciences still continuing, recently I have been very lucky to make multiple trips out to a beautiful site just outside the city of Saskatoon where massive deposits of glacial lake silt are exposed. This silt produces pristine grass and other plant fossils in abundance (I'd like to make a post about them soon as well), but also seems to be teeming with various invertebrate trace fossils. All are very small (under 1 centimetre wide). I've attached some of my best pictures below. 1 - 6: Overlapping Planolites sp. closeups 7 - 11: Edaphichnium sp. 12 - 14: Taenidium sp. closeups 15 - 16: Taenidium sp. wide shots 17: Taenidium sp. closeup- 3 replies
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Hi! I’m still trying to identify one fossil from a particular unit of Pleistocene/Early Holocene lacustrine silt from my hometown of Saskatoon, but I figured I would look away from it for a bit to try and identify another fossil from the same unit I’ve been unable to classify. I have two specimens, both apparently of the same species. They are both approximately 0.5 millimetres across. They are perfectly circular, with lines radiating from the centre and rings of alternating colours (possibly representing growth lines). One specimen is photographed dorsally, showing its circular shape, the other in profile, showing its umbrella-like, protruding outline. All photos are taken through a microscope with my best camera currently available, an iPhone! My main areas of middling expertise are arthropod and vertebrate fossils, so I have no idea what this is! I have briefly studied fossil foraminifera and diatoms in the past, but it looks like nothing I’ve seen in those areas as well. It reminded me of a small limpet, some type of seed or spore, or perhaps even a strange fish scale, but I have no formal suggestions. I’d highly appreciate any help! I will try to supply any additional information you may need. Thank you!
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2 weeks ago, returning from a sale exhibition of minerals and fossils in the Dordogne, we (my wife and I) visited a site in search of fossils rarely sought after by amateurs... The rock that motivated us is a millstone that has been exploited, formed from a lacustrine sediment from the Rupelian (Oligocene), and cuttings from exploitation are still accessible in a wood. The first photo shows a (broken) millstone found in the area; For the search for fossils, you have to be motivated, equipped with a good magnifying glass because the average size of fossils is between 0.5 and 1 mm in diameter! ..And perseverance because few pieces of rock have fossils, and this rock is extremely difficult to break, producing sharp shards in an unpredictable direction. Have you guessed which fossils these are? these are Gyrogonites, oogonia of Characeae, which can be found preserved in 3D with their spiral ornamentation, or in section, and occasionally accompanied by very small gastropods... here are the pics, enjoy