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Found 15 results

  1. I was reading a book about fossil fishes and there was a chapter dedicated to sharks and their cousins. Apparently there were chondricthyan scales found in the Late Ordovician and Early Silurian rocks. Since I hunt the Late Ordovician Georgian Bay formation in Toronto, Ontario and various Early Silurian formations in Hamilton, Ontario, what are the chances of me coming across these scales? Should I keep my eyes open and what should I look for?
  2. Mystery Star

    I am a mineral and fossil collector and an amateur astronomer and my email is rocksnstars, so rocks collected that include a star shape are special. Most of the ones I have are the crinoid stems with star-shaped centers. This is the first time I've seen anything like this. I believe I have met the requirements of providing a good photo with a scale, and I know the period is Late Ordivician. I tagged Ohio because I think that is where it is from, but it is possibly Indiana, however BOTH sites are the SAME period and well known. I collected the two places the same day, and unfortunately during the drive home to Maine and the unloading, some of the specimens got mixed up and this was one of them. The Ohio location is the spillway at Caesar Creek State Park, Waynesville, Ohio, US. The Indiana one is Whitewater River Gorge, Richmond, Indiana, US. (Each mark is 1 mm, so the "1" on the scale is 10 mm, perhaps standard.)
  3. Eastonillaenus goonumblaensis

    https://www.researchgate.net/publication/236010425_Ordovician_trilobites_with_eastern_Gondwanan_affinities_from_central-west_New_South_Wales_and_Tasmania
  4. About a month ago, I headed out on two fossil trips to the well-known St. Leon roadcut in Indiana. I was hunting in the Liberty formation (late Ordovician) with the sole goal of finding some nice trilobites (which I definitely achieved!). Along with multiple rare trilobites, I was able to find some excellent examples of other fossils. The spoils were totally awesome, and I am itching to go back. I hope you enjoy. Best for last.
  5. Symphysops sp.

    From the album Trilobites

    © © 2018 by Jay A. Wollin

  6. Lituites Fossil Specimen.jpg

    From the album MY FOSSIL Collection - Dpaul7

    Lituites Fossil China TIME PERIOD: late Ordovician Period (445-458 Million Years ago) Data: Lituites is an extinct nautiloid genus from the Middle Ordovician and type for the Lituitidae (a tarphycerid family) that in some more recent taxonomies has been classified with the orthocerids and listed under the order Lituitida. it's now considered widespread, Fossils have been found in New York, Argentina, Norway, Sweden, Estonia, and China. Lituites produced a shell with a planospirally coiled juvenile portion at the apex, reflective of its tarphycerid ancestry, followed by a long, moderately expanding, generally straight, orthoconic adult section with a subdorsal siphuncle connecting the chambers. The adult body chamber may equal or exceed the length of the chambered part of the orthoconic section. The mature aperture has a pair of pronounced ventrolateral lappets and a similar but shorter pair of dorsolateral lappets. Lituites gives its name to the term "lituiticone" which refers to a shell that is coiled in the early growth stage and later becomes uncoiled. Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Order: †Orthocerida Family: †Lituitidae Genus: †Lituites
  7. Lingulichnus verticalis

    From the album Urban Fossils of Toronto (Georgian Bay Formation, Lower Member)

    Lingulichnus verticalis (Hakes, 1976). Humber RIver area, Toronto, Ontario, Canada. Late Ordovician, Georgian Bay formation, Lower Member. Oblong to tear shaped burrows made by linguliid brachiopod, species unknown. Approximately 15 cm across.
  8. Phycodes flabellus

    From the album Urban Fossils of Toronto (Georgian Bay Formation, Lower Member)

    Phycodes flabellus (Miller and Dyer, 1878). Georgian Bay formation, Lower Member. From the Humber River, Toronto, Ontario, Canada. Late Ordovician burrows organized in a flabellate pattern. Approximately 10 cm across and in width.
  9. Toronto Conularia

    conularia 6.4 cm long, matrix of the specimen 14 cm
  10. Cyrtolites

    A tergomya mollusc that can be easily found in the Humber Member of the Georgian Bay Formation in Toronto. This one is set on a limestone hash plate dominated mostly by pelycopods. On a personal experience I have come across more Cyrtolites specimens than gastropods at Mimico Creek. Reference: Ontario Department of Mines. The Stratigraphy And Paleontology Of Toronto And Vicinity.
  11. Slab Of Little Ripples Marks

    From the album Urban Fossils of Toronto (Georgian Bay Formation, Lower Member)

    Little ripple marks caused by the gentle currents on the shallow late Ordovician sea floor of Toronto. Georgian Bay formation, Humber member(?), Humber River area, Toronto, Ontario. Limestone slab, the coin is a quarter at the bottom for scale. Hmm, I'm beginning to decide if I should have taken this home with me today. Also at the bottom are two clam negative casts: a Whiteavesia and a Modiolopsis.

    © (©)

  12. Toronto Brachiopod And Bryozoan Help

    I found these two fossils from Mimico Creek in Toronto, Canada and they both belong to the Georgian Bay formation, late Ordovician. The first one I believe is a Pseudolingula, but I can't really nail it down to a species level. The other is a bryozoan, and I was thinking of Prasopora. What do you guys think? The brachiopod I found in shale, but the bryozoan in a limestone bed with other bryozoas. The brachiopod: The bryozoa:
  13. Ever since summer vacation started I have been free to explore the Humber River area and made frequent hunts there in the late Ordovician rocks of the Georgian Bay formation of the city of Toronto. I realized that I did not have a substantial amount of material from this location that I discovered by accident, and so I decided and started to invest some time in exploring this particular location. Last year I only made seven visits, but I did not hunt productively, as I was in my first year of fossil collecting and as a result I had very little material from this location. I knew this location that I accidentally stumbled on had a lot of potential, considering that a great deal of the original exposures are still intact and there were few disturbances done by tractors, whereas compared to Mimico Creek a great deal of the original and actual exposures have been buried. I made three different visits, the first trip I believe was last week and the third today. On the first trip I only took home three specimens, but gradually as I hit the third visit the amount of my finds increased. On the first trip I only found at least three materials. The first thing that I discovered was a Treptoceras crebiseptum specimen. What made me surprised with this specimen was that this specimen actually had Cornulites sp. attached to it. I've never seen something like this in Mimico Creek. There were tubes of the worm attached on the orthocone and also the orthocone was not squashed flat because of the nature of the shale it is in. Actually, I noticed that certain shales in this location did not squash completely flat the orthocones that get preserved in them, which is very different from Mimico because most of the orthocones I find in Mimico shale are compressed. Sorry if I didn't carry any macro lenses and a good camera to capture the Cornulites, the location's flood from a recent rainfall made the place really mucky and wet and the flood waters were just starting to recede. Out of all the Treptocerases that I discovered on that trip, this was the only one that I decided to take home.
  14. The first major event to wash the creek was the nasty February winter we had in the city. Let's recall the ice that melted and went down the creek back in March. Then fast forward to June. I believe the city had rain during the first 2 straight weeks of June in which I remember seeing many creeks being flooded continuously for several days. Then gradually the rain stopped, I waited for some time to give the creek's water level to drop low again, and that's when I set off to visit the ravines of Mimico Creek.
  15. Fossil Coral Polyp?

    I found the attached at a Quarry in Rockford. The area is supposed to be Late Ordovician, however I did find some Silurian fossils there, such as a Dawsonoceras. Anyway, I have yet to find anyone who'd been able to come to a conclusion on what this is. I believe it may be a coral polyp, but I just don't know. Help? The 'bulb' is 1.5CM wide The 'stem with top' is 1CM tall I appreciate your help! -Hannah
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