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Found 18 results

  1. Brittle star real or forgery?

    Hello! This is an apparent “fossil” brittle star, looking much like those that come from the Ordovician of Morocco. However, these particular fossils are very often faked, and I have a strong gut feeling that this particular one has been carved into the matrix. What does everyone else think? For whatever reason that I can’t quantify this piece *looks* like a fake to me, especially due to the fact that it has a very distinctive obvious outline from an air tool, which often is a sign of carving, though that I’ve also often seen that done with genuine Knightia and such. There are a few things that may help indicate that it’s genuine, however, notably that fine details that would be difficult/too labor intensive to carve like “ribbing” on the arms and a “star” (like that on a sand dollar) in the middle of the body are visible. I’ve also already run a cotton swab with acetone over the body, which has not removed any color, so that may help rule out painting. But yes, my gut says it’s a carved forgery (or I guess to be nice you could say “replica”), interested in what everyone else thinks because I’m not 100% sure. Thanks!
  2. Hello everyone! first time poster here. I wanted to gather some opinions on whether this is a genuine or carved brittle starfish. I found it for sale online and wanted to purchase it for my collector wife (as a surprise). However, I heard/read there are many fake fossils and I don’t have enough confidence to make a call on its authenticity. What do you all think? thanks a lot for the help and advice. -Robert
  3. Was out near Canyon Lake today and found these oddities. I think my expectations are overreaching my reality, but I sure would like these to be something other than just something boring, like worm burrows.....sorry worm burrows, no disrespect. Any help is appreciated! Crab Claws? Shrimp? Brittle Star Arms? Seriously...I know these are probably worm burrows, but hey, a girl can hope..... t
  4. Hello all. I saw this brittle star fossil up for sale, and wanted to check if it was genuine. It says it is from Morocco, and from the Ordovician period. I know a lot of sea stars and brittle stars coming out of Morocco are carved. I am not as educated on echinoderm fossils as much as others. I've included pictures. What do you all think? Thank you!
  5. Okay so I found this specimen at the Taughannock Falls in Ithaca New York. I found it at the edge of the gorge which consists of Shale, composed of slit and clay that fell onto lime mud and hardened into rock. I've done some research and it appears to be a Brittle star trace fossil formed by their arm grazing the sand floor. Although, these Brittle Star fish traces are known as "Pteridichnites biseriatus" and they have only been discovered so far in upper Devonian shales out in western and eastern Virginia. I'm not an expert but to my knowledge the Ithaca geological formation is Devonian and was slowly covered by sand. Is it possible that the Brittle Star fish once roamed in the ancient sea now known as "Taughannock falls" today? Because a research team is trying to find this specimen and they are wondering if anyone has discovered it. Edit: Im referring to the dotted trackway. check this link out for more information. http://www.wvgs.wvnet.edu/www/news/Pteridichnites.htm
  6. Loriolaster mirabilis Stuertz, 1886

    From the album Invertebrates

    Loriolaster mirabilis Stuertz, 1886 Early Devonian Early Emsian Bundenbach Quarry Eschenbach Germany Diameter 8cm
  7. These are a few of the pdf files (and a few Microsoft Word documents) that I've accumulated in my web browsing. MOST of these are hyperlinked to their source. If you want one that is not hyperlinked or if the link isn't working, e-mail me at joegallo1954@gmail.com and I'll be happy to send it to you. Please note that this list will be updated continuously as I find more available resources. All of these files are freely available on the Internet so there should be no copyright issues. Articles with author names in RED are new additions since May 11, 2018. Phylum Echinodermata Class Ophiuroidea - Brittle Stars Ophiuroidea - Africa/Middle East Reid, M. (2017). Taphonomy, palaeoecology and taxonomy of an ophiuroid-stylophoran obrution deposit from the Lower Devonian Bokkeveld Group, South Africa. Masters Dissertation - University of Capetown. (149 pages) Rilett, M.H.P. (1971). Two new fossil Ophiuroid species from the Bokkeveld Series, near Ceres, Cape Province. Ann. Natal Mus., Vol.21(1). Ophiuroidea - Asia/Malaysia/Pacific Islands Ishida, Y. and Y. Kurita (1998). Ophiura sarsii sarsii (Echinodermata, Ophiuroidea) from the Late Pliocene Hachioji Formation in Niigata Prefecture, Central Japan. Paleontological Research, Vol.2, Number 2. Ishida, Y., K. Nagasawa and H. Tokairin (1999). Ophiura sarsii sarsii (Echinodermata, Ophiuroidea) from the Late Miocene to Early Pliocene formations of Yamagata Prefecture, northern Japan. Earth Science, Vol.53. Ishida, Y., et al. (2010). Paleoenvironments of fossil ophiuroids in Plio-Pleistocene Hijikata Formation in Shizuoka Prefecture, Central Japan. In: Echinoderms: Durham. Harris, et al. (eds.), Taylor & Francis Group, London. Ophiuroidea - Australia/New Zealand Skwarko, S.K. (1963). A New Upper Cretaceous Ophiuroid from Australia.Palaeontology, Vol.6, Part 3. Ophiuroidea - Europe (including Greenland and Siberia) Ewin, T.A.M. and B. Thuy (2017). Brittle stars from the British Oxford Clay: unexpected ophiuroid diversity on Jurassic sublittoral mud bottoms. Journal of Paleontology, 91(4). Ewin, T.A.M. and B. Thuy (2015). Two New British Ophiuroid Localities, Preliminary Observations and Determinations. In: Progress in Echinoderm Palaeobiology. Zamora, S. and I. Rabano (eds.), Cuadernos del Museo Geominero, 19. Glass, A. and M. Poschmann (2006). A New Species of Brittlestar (Ophiuroidea, Echinodermata) from the Hunsruck Slate (Lower Emsian, Lower Devonian) of Germany. Palaeontology, Vol.49, Part 5. Hotckhiss, F.H.C. and A. Glass (2012). Observations on Onychaster Meek & Worthen, 1868 (Ophiuroidea: Onychasteridae) (Famennian-Visean age). Zoosymposia, 7. Hotckhiss, F.H.C., R.J. Prokop and V. Petr (2007). Isolated Ossicles of the Family Eospondylidae Spencer et Wright, 1966, in the Lower Devonian of Bohemia (Czech Republic) and Correction of the Systematic Position of Eospondylid Brittlestars (Echinodermata: Ophiuroidea: Oegophiurida). Acta Musei Naturalis Pragae, Series B-Historia Naturalis, Vol.63, Number 1. Hotchkiss, F.H.C., et al. (1999). Isolated vertebrae of brittlestars of the Family Klasmuridae Spencer, 1925 (Echinodermata: Ophiuroidea) in the Devonian of Bohemia (Czech Republic). Journal of the Czech Geological Society, 44/3-4. Hotchkiss, F.H.C., et al. (1999). Isolated skeletal ossicles of a new brittlestar of the Family Cheiropterasteridae Spencer, 1934 (Echinodermata: Ophiuroidea) in the Lower Devonian of Bohemia (Czech Republic). Journal of the Czech Geological Society, 44/1-2. Hunter, A.W., et al. (2007). A mixed ophiuroid-stylophoran assemblage (Echinodermata) from the Middle Ordovician (Llandeilian) of western Brittany, France. In: Palaeozoic Reefs and Bioaccumulations: Climatic and Evolutionary Controls. Alvaro, J.J., et al. (eds.), Geological Society, London, Special Publications 275. Jagt, J.W.M. (1986). Note on the Occurrence of ?Amphiura senonensis Valette, 1915 (Echinodermata, Ophiuroidea) in Early Palaeocene (Danian) Deposits of the Belgian Province of Limburg. Teded.Werkgr.Tert.Kwart.Geol., 23(3). Jaselli, L. (2015). The Lower Jurassic (Early Sinemurian) ophiuroid Palaeocoma milleri in the palaeontological collection of the Museo di Storia Naturale "Antonio Steppani" (Italy). Bollettino della Societa Paleontologica Italiana, 54(3). Jaselli, L. (2014). The First Occurrence of Ophiuroids (Ophiuroidea, Echinodermata) in the Early Triassic of Lombardy (Northern Italy). Atti Soc.Tosc.Sci.Nat.Mem., Serie A, 121. Kroh, A. (2004). First fossil record of the family Euryalidae (Echinodermata: Ophiuroidea) from the Middle Miocene of the Central Mediterranean. In: Echinoderms. Heinzeller and Nebelsick (eds.). Kroh, A. and J.W.M. Jagt (2006). Notes on North Sea Basin Cainozoic echinoderms, Part 3. Pliocene gorgonocephalid ophiuroids from borehole IJsselmuiden-1 (Overijssel, The Netherlands). Cainozoic Research, 4(1-2). Numberger-Thuy, L.D. and B. Thuy (2015). Pliocene Deep-Sea Ophiuroids from the Mediterranean With Western Atlantic Affinities. In: Progress in Echinoderm Palaeobiology. Zamora, S. and I. Rabano (eds.), Cuadernos del Museo Geominero, 19. Rasmussen, H.W. (1951). Cretaceous Ophiuroidea from Germany, Sweden, Spain and New Jersey. Medd. fra Dansk Geol.Forening. Kobenhaven, Vol.12. Salamon, M.A. and A. Boczarowski (2003). The first record of Aspiduriella (Ophiuroidea) in the Upper Muschelkalk of Poland. Geological Quarterly, 47(3). Stohr, S., J.W.M. Jagt and A.A. Klompmaker (2011). Ophiura paucilepis, a new species of brittlestar (Echinodermata, Ophiuroidea) from the Pliocene of the southern North Sea Basin. Swiss J.Paleontol., 130. Storc,R. and J. Zitt (2008). Late Turonian ophiuroids (Echinodermata) from the Bohemian Cretaceous Basin, Czech Republic. Bulletin of Geosciences, 83(2). Thuy, B. and H. Schulz (2013). The oldest representative of a modern deep-sea ophiacanthid brittle-star clade from Jurassic shallow-water coral reef sediments. Acta Palaeontologica Polonica, 58(3). Thuy, B. and C.A. Meyer (2012). The pitfalls of extrapolating modern depth ranges to fossil assemblages: new insights from Middle Jurassic brittle stars (Echinodermata: Ophiuroidea) from Switzerland. Swiss J.Paleontol. Thuy, B., M. Kutscher and B.J. Plachno (2015). A new brittle star from the early Carboniferous of Poland and its implications on Paleozoic modern-type opiuroid systematics. Acta Palaeontologica Polonica, 60(4). Ophiuroidea - North America Bjork, P.R., P.S. Goldberg and R.V. Kesling (1968). New Ophiuroid from Chester Series (Mississippian) of Illinois. Journal of Paleontology, Vol.42, Number 1. Clark, E.G., et al. (2017). Water vascular system architecture in an Ordovician ophiuroid. Biol.Lett., 13: 2017.0635. Glass, A. (2006). Pyritized tube feet in a protasterid ophiuroid from the Upper Ordovician of Kentucky, U.S.A.. Acta Palaeontologica Polonica, 51(1). Kesling, R.V. (1982). Acinetaster konieckii, a New Brittle-Star from the Middle Devonian Arkona Shale. Contributions from the Museum of Paleontology - The University of Michigan, Vol.26, Number 5. Kesling, R.V. (1972). Strataster devonicus, a New Brittle-Star With Unusual Preservation from the Middle Devonian Silica Formation of Ohio. Contributions from the Museum of Paleontology - The University of Michigan, Vol.24, Number 2. Kesling, R.V. (1971). Antiquaster magrumi, A New Unusual Brittle-Star from the Middle Devonian Silica Formation of Northwestern Ohio. Contributions from the Museum of Paleontology - The University of Michigan, Vol.23, Number 10. Kesling, R.V. (1970). Drepanaster wrighti, A New Species of Brittle-Star from the Middle Devonian Arkona Shale of Ontario.Contributions from the Museum of Paleontology - The University of Michigan, Vol.23, Number 4. Kesling, R.V. (1969). A New Brittle-Star from the Middle Devonian Arkona Shale of Ontario. Contributions from the Museum of Paleontology - The University of Michigan, Vol.23, Number 2. Kesling, R.V. and D. Le Vasseur (1971). Strataster ohioensis, A New Early Mississippian Brittle-Star, and the Paleoecology of its Community. Contributions from the Museum of Paleontology - The University of Michigan, Vol.23, Number 20. Rasmussen, H.W. (1951). Cretaceous Ophiuroidea from Germany, Sweden, Spain and New Jersey. Medd. fra Dansk Geol.Forening. Kobenhaven, Vol.12. Ophiuroidea - South America/Central America/Caribbean Caviglia, S.E., S. Martínez and C.J. Del Río (2007). A new Early Miocene species of Ophiocrossota (Ophiuroidea) from Southern Patagonia, Argentina. N.Jb.Geol.Palaont. Abh., Vol.245/2. Martínez, S. and C.J. Del Río (2008). A new, first fossil species of Ophioderma Muller and Troschel, 1842 (Echinodermata: Ophiuroidea) (Late Miocene, Argentina). Zootaxa, 1841. Martínez, S., C.J. Del Río and D.E. Pérez (2009). A brittle star bed from the Miocene of Patagonia, Argentina. Lethaia. General Ophiuroidea Aronson, R.B. (1987). Predation on fossil and Recent ophiuroids. Paleobiology, 13(2). Bjork, P.R, P.S. Goldberg and R.V. Kesling (1968). Mouth Frame of the Ophiuroid Onychaster. Contributions from the Museum of Paleontology - The University of Michigan, Vol.22, Number 4. Chen, Z.Q. and K.J. McNamara (2006). End-Permian extinction and subsequent recovery of the Ophiuroidea (Echinodermata). Palaeogeography, Palaeoclimatology, Palaeoecology, 236. Fell, H.B. (1960). Synoptic Keys to the Genera of Ophiuroidea. Zoology Publications from Victoria University of Wellington, Number 26. Hotchkiss, F.H.C. and A. Glass (2012). Observations on Onychaster Meek & Worthen, 1868 (Ophiuroidea: Onychasteridae) (Fammenian - Visean age). Zoosymposia, 7. O'Hara, T.D., et al. (2014). Phylogenomic Resolution of the Class Ophiuroidea Unlocks a Global Microfossil Record. Current Biology, 24. Twitchett, R.J., et al. (2005). Early Triassic Ophiuroids: Their Paleoecology, Taphonomy and Distribution. PALAIOS, Vol.20.
  8. Echinodermata resting place

    Asteriacites lumbricalis are five-rayed trace fossils found in marine sedimentary rocks. They record the burrows of ophiuroid and asteroid sea stars on the sea floor. Here in this particular case it can be assumed that these traces originate from Palaeocoma escheri Herr, 1865 (or Ophioderma escheri), a brittle star, whose remains were found to hundreds in situ in the same layers.
  9. Ophiopinna elegans

    Villier, L., Charbonnier, S. and Riou, B. (2009). Sea stars from Middle Jurassic lagerstätte of La Voulte-sur-Rhône (Ardèche, France). Journal of Paleontology, 83(3), pp.389-398.
  10. Sea Star Prep

    @pamk7802 brought me a slab from the Lower Cretaceous Duck Creek Formation full of brittle stars to prep recently. Most of the prep was with abrasive. I did have a couple areas of thicker matrix that required some scribe work. Here's the slab before: and after: PVA consolidant applied to lock everything down as the arms are VERY fragile. Close up pics:
  11. As often the case with brittle stars and other starfish, this shows the oral surface and is on the underside of the sandstone bed. The bed below it is a shale and the base of the sandstone represents a sudden influx of sediment which preserved the brittle star nearly intact. This was Invertebrate/Plant Fossil of the Month Sept 2014 and Fossil of the Year 2014.
  12. Palaeocoma escheri (Herr, 1865)

    From the album Invertebrates

    Palaeocoma escheri (Herr, 1865) Early Jurassic Hettangian Blumenrod Coburg Germany Ophiuroid trace fossil
  13. Euzonosoma was a brittlestar genus that existed during the Devonian period. This E. tischbeinianum is from the Bundenbach slate of Germany. The slate was quarried for use in the roofing industry for many years and, at least in some parts of Germany, you can still see houses covered by Bundenbach slates. Unfortunately, roof-slate mining in Bundenbach came to an end in 1999. The fossil has been replaced by iron pyrite or ''fool's gold''. The brittlestar already started to become decomposed at the tip of the arms.
  14. Brittle stars are rather rare in the lithographic limestone of Solnhofen, but are quite common in Zandt.
  15. Furcaster is the most common brittle star in Bundenbach.
  16. I was going through my fossils yesterday (7/24/2015) labeling them and adding them to my Database when this small shape caught my eye. Took out my magnifier and checked out a small shape, that at first glance, I thought was just a small Crinoid disk among the Carbonized Fern pieces. To my surprise, I had a Starfish staring back at me. Yes, I was very surprised! These are extremely rare in Northern Ohio’s, Meadville Shale, or anywhere else. I knew of another Brittle Star find that was written about, and was a new species (Strataster ohioensis). I knew that I had a copy of the PDF describing this rare find, but did not think that I had one of these in my hand. The original find of these is only from 1970, along the Ohio Turnpike. They are described as of, Kinderhook and early Osage age and 391.9 to 388.1 MYA. (No Fossil hunting on the Turnpike). Now excited about this very unlikely find, I study this 4x5 inch piece of slate and find not one Brittle Star but nine of them. I have the link to the PDF if anyone has the time to check and see if mine is very close to the described ones. http://deepblue.lib.umich.edu/bitstream/handle/2027.42/48462/ID311.pdf?sequence=2&isAllowed=y Here are some photos of my Strataster ohioensis? There are 9 Brittle Stars on this piece. Size in mm
  17. From the album Invertebrates

    Geocoma carinata (v. Münster in Goldfuss, 1833) Upper Jurassic Tithonian (Malm zeta) Zandt Germany Diameter 8cm / 3 inch
  18. Euzonosoma tischbeinianum

    From the album Invertebrates

    Euzonosoma tischbeinianum F.A.Roemer Lower Devonian Emsian Bundenbach Hunsrück Germany Length 8cm