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Showing results for tags 'microfossil'.
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Found this in Big Brook, NJ (Late Cretaceous Navesink Fm.). It's about 2.5 cm wide. I don't even know what phylum to put it in. My first thought was bryozoan. There is one very thorough paper on Bryozoa of the Atlantic Coastal Plain, but it has nothing to fit the bill. Looks like sponge with those big holes. Found a picture of Discopora sp. that looks very close, but that genus is not listed in PBDB anywhere in North America. Gabb thought he had something similar from NJ, but it turned out to be a sand concretion. The last picture is the underside of the specimen, which may or may not be a thin layer of shell material from a bivalve.
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- bryozoa
- invertebrate
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From the album: Aguja Formation
Carbonized plant material (charcoal) is common - evidence of Cretaceous forest fires. -
From the album: Aguja Formation
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From the album: Aguja Formation
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Hi everyone, I've been working on a project about fossilised megaspores found in a Namurian (Late Carboniferous) coal seam in the UK. There are very few papers and photographs of megaspores so classification is a challenge! I have a couple of my unidentified specimens here that have been extracted from the coal, and was wondering if anyone could help me out? Light microscope images are attatched. The maximum diameter of the compressed spore is 1125 µm for Species A, and 1225 µm for Species B. I believe that the depositional environment was a Late Carboniferous swamp forest, dominated by arborescent lycopsids. All the best, Eloise
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- carboniferous
- coal
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From the album: Post Oak Creek
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- goblin shark
- microfossil
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Hello, I recently visited a Permian site near Waurika Pond and collected microfossils for my students to explore back in the classroom. Is there a guide to identifying these fossils out there somewhere or is piecemeal searching here the way to go. If not, I will be making the one page guide over the summer have it to offer. Any help on something simple for my elementary aged students would be much appreciated. IMG_0064.DNG IMG_0065.DNG
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From the album: Post Oak Creek
To find denticles, you need to go to the finest grain size. This beautiful one could be shark, but I'm not certain.-
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- denticle
- dermal denticle
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From the album: Post Oak Creek
Rhinobatos teeth are probably the smallest teeth you can hope to find here - they are about as small as grains of sand.-
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- guitarfish
- microfossil
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From the album: Post Oak Creek
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- cantioscyllium
- cantioscyllium decipiens
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From the album: Post Oak Creek
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From the album: Post Oak Creek
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- microfossil
- microfossils
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Tiniest Shark Tooth You've Ever Seen? POC Microfossil
Mikrogeophagus posted a topic in Micro-paleontology
Just a quick post. Was picking through some washed gravel I got from Post Oak Creek back in the winter when I stumbled upon this guy. I'm surprised my screens were fine enough to catch him. Taking clear pics was a bit difficult so apologies for blurriness. I'm curious about what sort of shark would have a tooth of this size. Was it just a tiny pup or were there just really small species? The hashmarks are millimeters. I might make a post about my POC micro finds once I finish going through it and identifying stuff. It's a long process, but there are plenty of fun finds to be had. Thanks for reading!
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- microfossil
- post oak creek
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From the album: Lee Creek
Rhincodon cf. typus Pungo River Fm., Aurora, NC, USA a minute tooth from the biggest fish in the sea - the whale shark. Being filter-feeders, their teeth serve no known function and are considered vestigial. -
Is that a biological in the center (ribbed red object)? This is around 800X (scope = 10x object, 50" HD TV, no barlow, 1/2.5" sensor). About a 1/5 crop of a 5 mpx camera. Any Ideas?
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From the album: Delaware Fossils
A few of the hundreds of microfossils I found in one day of lying on the sandy spoils with a pair of reading glasses Coin is about 2 cm.-
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- brachiopod
- c and d canal
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From the album: Permian
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From the album: Permian
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From the album: Permian
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From the album: Permian
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From the album: Permian
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From the album: Permian
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Rowe, Timothy, et al. “The Campanian Terlingua Local Fauna, with a Summary of Other Vertebrates from the Aguja Formation, Trans-Pecos Texas.” Journal of Vertebrate Paleontology, vol. 12, no. 4, [Society of Vertebrate Paleontology, Taylor & Francis, Ltd.], 1992, pp. 472–93, http://www.jstor.org/stable/4523473. DeMar also has a nice description of the differentiation between eutherian/metatherian upper molars: "The upper molars of metatherians and eutherians are triangular shaped with three major cusps or bumps on the occlusal surface of the crown. The main differences between metatherian and eutherian upper molars are that metatherians have more small cusps on the outer side (labial) of the occlusal surface of the tooth and have a front to back (mesiodistal) longer tooth." https://naturalhistory.si.edu/sites/default/files/media/file/fossil-id-guide062812-accessible.pdf
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From the album: Lee Creek
Rhincodon cf. typus Pungo River Fm., Aurora, NC, USA A minute tooth from the biggest fish in the sea, the whale shark. Being filter-feeders, their teeth serve no known function and are considered vestigial. -
These are photos of an unidentified tooth from the lance formation in Wyoming, it was put in a group of mammal teeth all approximately in the range of 2-4 mm in size. Among the teeth two of them have been identified as shark, one is a Lissodus and the other is unknown as of now. If there are any ideas as to what this tooth could be please do share.
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