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Found 23 results

  1. IOW UK dino

    Kats Looking forward to the dental microwear analysis already
  2. Need help with trilobite morphology

    I'm starting to sort through the trilobites I found at Oak Springs and need some help. My degree is in electrical engineering, which means when I was in college I never had to take any of those pesky courses in biology, zoology, etc. But that puts me at a disadvantage now as I read through the descriptions of the candidate trilobites and try to make sense of them. There are a fair number of papers published on the trilobites of the Cambrian in California and Nevada. To help identify what I have collected I'm using this one: Carrara Formation. Here is where I am having difficulty. The descriptions in this paper include features that don't appear on the diagrams I have of trilobite morphology. I have compiled one example here: Gilberti.pdf (reproduced as a low-res JPEG below). The color photo at the top is the specimen I'm trying to identify. I think it might be an Olenellus gilberti, so I have pasted that description below the photo, along with three photos of O. gilberti from the paper. (Below those photos is a diagram of trilobite morphology I pulled from the Internet.) The description of O. gilberti includes at least two features that don't show up on the morphology diagram: occipital ring (is this the same as occipital lobe?) and intergenal spine (I don't think this is the same as genal spine?). More concerning to me is this part of the description: "Glabella elongate, separated from frontal border by preglabellar area as wide or wider than anterior border." In my novice opinion, the examples in photos 6-8 from the paper show glabellas that extend pretty much all the way to the anterior border. In my specimen the preglabellar area is much wider, which would seem to be more consistent with the written description. Any help would be appreciated. Of course I'd like to identify the specimen, but what I'd really like are pointers on how to interpret the morphology descriptions. Maybe I've got an O. fowleri instead of O. gilberti, but if I don't understand how to interpret the descriptions I won't be successful in identifying it. Is there a book I should lay my hands on?
  3. functional anatomy of Stylommatophora

    I liked it,but that's no guarantee you will schileyshiley.pdf I've included some illustrated taxa in the tags. It's write-protected so I can't post any outtakes
  4. gastropods do have a price

    unreservedly recommended by me Pricecolumelgastrop(BUSYCON)functmorphconchbiomineralizBull.pdf
  5. Apex?Que?

    When three guys with that kind of reputation in echinodermology get together to write a paper,you just KNOW it's going to be good. Highly recommended,particularly if you love your Loven,Mortensen,Raff,etc. Extremely well illustrated,IMHO Saucepourtpical 04 me.pdf
  6. Members of the Green Party

    A pretty useful capsule review of leaf shapes in ferns. Recommended?You betcha. vascofernleaveslaminbotanyreviewnfpls-04-00345.pdf outtake:
  7. If anybody has read any Shubin,Clack,Coates,etc:this is indispensable,IMHO dioja37592.pdf wonderful coloured diagrams in this one,this is one of them
  8. inc.sedis,continued

    large download,about 24 Mb
  9. molluscan oddity

    All of you who are into malacology might be surprised by this beastie. edmu3.tb01640.x.pdf
  10. Ammonite sculpture question

    I am sculpting an ammonite which will be hunting through kelp fronds. The ammonite i want to use for this sculpture is crioceratites or something closely related. I like the spines and overall shape. My question is how many spines around each band of the shell? Five or six? Thanks for any help you might provide.
  11. Mosasaur teeth Morphology

    I bought this fossil mosasaur tooth. It came from Morocco, from some phosphate deposits. The size is very small about 2 centimeters I'm wondering if this tooth was from a juvinile. I have heard that each mosasaur has it's own tooth morphology even in species who's teeth are very similar like Prognathodon and Mosasaurus. The tooth is very unusual from others I have. It is very curved. Photo of tooth Other side
  12. cephalopod anatomy

    read this. Period. Priceless Damesites reconstruction!!! srep33689.pdf
  13. dictionary of invertebrate zoology

    This might be useful. Is it complete,is it any good? if you stumble acros that one annoying term that keeps you from reading further.... Does anyone know of something comparable,BTW? http://digitalcommons.unl.edu/cgi/viewcontent.cgi?article=1001&context=onlinedictinvertzoology EDIT: ok did a little test anderidia:not in there synapticulotheca: not in there Do I know these words? Yes,i do,and probably everybody else here interested in brachs or corals come to think of it:anderidia mayby just in fossil brachiopoda? Maybe i'm being too harsh edit two: matrotrophy: not in there
  14. shake a leg

    some of you might have Cisne,this one is a bit more rare large file NB get it while you can(edit 26/10:which is up to Nov 6th.) http://rstb.royalsocietypublishing.org/content/royptb/317/1182/1.full.pdf
  15. gripping

    chelipeds,a short review maraippcheliped32.pdf
  16. full size?

    This is not an ID question, but more a morphology one to determine likely size. I can't recall where I once chanced upon a formula for judging what the full size of a trilobite (pending species) would have been on the basis of a fragment. This one would have been a fairly substantially sized bug, but not by any means the biggest. It is a typical Eldredgeops rana. It is likely just a moult, and perhaps there is a (very) slim chance I might be able to find the full one in the vicinity. Measuring to just at where the halfway point of the glabella is, I get a reading of 1.8 cm (0.71 inches) for a possible total width at the cephalon of approximately 3.6 cm (1.42 inches). Any experts have the "magic formula" for measuring this species so that I can perform this on some of my other specimens?
  17. Here's a treat for the troops. These have been hidden from public and scientific view since they were acquired from the finder. I purchased them from a civil war relic hunter and collector, who claimed to have these found together, but he wouldn't divulge exactly where. I suspect coastal Charleston, north to possibly southern NC, based upon his distance of travel from the sale, which was the old Civil War Museum, located in downtown Myrtle Beach - Mid 90's.(A friend who worked there, alerted me of the seller's presence.) The owner also collected fossils and displayed these, so it was known as a place of trade and sale for both artifacts and fossils. When I first saw them, I immediately recognized the possibility that they were a pair, and likely land finds, but what I didn't expect to discover, was their curious potential axial relationship. Published relative axial ratios of known or suspected associated sets reveal similar math to what I've found in these Both appear to be from the same side of the jaw, which makes a reasonable argument for how they may have literally, come together in the first place. I've managed to contact one nationally recognized expert who seems intrigued. Unfortunately, there's probably no DNA remaining, but if you've ever watched Forensic Files on TV, more than just DNA is often used to establish beyond a reasonable doubt. I think this is also a good time for a poll, recognizing of course that you can't see these in person.
  18. Taken from my blog: http://redleafz.blogspot.ca/2013/04/red-rocks-mcgahey-brook-cape-chignecto.html I've been catching up on a lot of past trips I made in the Maritimes that I didn't have time to post on my blog. One such trip was a rockhunting trek in Nova Scotia in the Advocate Harbour area, West of Parrsboro. Site (circled in red), Isle Haute (bottom left) The topography of the southern Chignecto region is very faulted, showcasing the collision of this part of the continent with North Africa some 400 million years ago, forming the ancient Supercontinent Pangaea. The Carboniferous strata of this regions has been folded and faulted in spectacular fashion, neighboring Jurassic (Early) age basalts from North Mountain, which you can see at Cape d'Or and other locations along the Minas Basin, and rhyolites in the West (ie. Spicer's Cove). Cape d'Or is especially known for its natural copper deposits, once mined in the early 1900s. 1- Actual Location (C-H Carboniferous, Early - Horton Group) CC - Carboniferous, Late - Cumberland Group (ie. Joggins) 2- Cape d'Or, Copper deposits, basalt lava flows, major fault 3- Jurassic, Early - North Mountain basalts (various overlapping lava flows) Isle Haute, composed mainly of basalt (Jurassic) Since the last ice age about 11,000 years ago, the area was uplifted. The land rebounded, leaving raised beaches on top of the cliffs with layers of glacial till. Because the region was involved in this tectonic tug of war, whatever fossils found in the rock has been worked mostly beyond recognition. There are some rare fossils that escaped this calamity, but they are very scarce indeed. Sandstone and other types of sedimentary rock had been metamorphosed, pulled apart and pressed, warped, and molded. Beading, sandstone under tectonic stress Tremendous pressure applied to these rocks introduced minerals such as quartz (quartzite). The shales and mudstone are practically pulverized, ground into a very fine material, resulting in this dark sand all over this beach. Glacial striation for fault scarring? Horsetail (related to ancient club mosses, lycopsids) Nice folding! Folding and faulting Sedimentary strata changed under incredible stress Morphology drastically being modified in several episodes This area is very fascinating and exciting. Here is a place where you can witness the continent being pushed around and shaped over and over during a very long period of time, in various ways, due to harsh and extreme forces exerted by the tectonic activity at the time of continental push and separation over 400 million years. The scale of it is amazing on the grandiose scale to the micro level of change. This shows that rocks can be very malleable under great stress. What doesn't bend, eventually breaks. Cheers!
  19. 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 September 10, 2016. Phylum Brachiopoda - The Lamp Shells. General Brachiopods General Brachiopoda - Asia/Malaysia/Pacific Islands Cooper, G.A. (1978). Tertiary and Quaternary Brachiopods from the Southwest Pacific. Smithsonian Contributions to Paleontobiology, Number 38. Khan, F.R. and J. Afzal (2005). Comparative Study of Brachiopods of Chhidru Formation from Zaluch and Nammal Sections, Western Salt Range, Pakistan. Pakistan Journal of Hydrocarbon Research, Vol.15. Shu-Zhong, S., et al. (2006). Brachiopod diversity patterns from Carboniferous to Triassic in South China. Geological Journal, 41. General Brachiopoda - Australia/New Zealand Allan, R.S. (1945). Palaeozoic and Mesozoic Brachiopod Faunas in New Zealand: with an Index to the Genera and Species.Transactions of the Royal Society of New Zealand, Vol.75, Part I. General Brachiopoda - Europe (including Greenland) Cocks, L.R.M. (1979). New Acrotretacean Brachiopods from the Palaeozoic of Britain and Austria. Palaeontology, Vol.22, Part 1. Copper, P. (1973). Bifida and Kayseria (Brachiopoda) and Their Affinity. Palaeontology, Vol.16, Part 1. Hanken, N.-M., and D.A.T. Harper (1985). The Taxonomy, Shell Structure, and Palaeoecology of the Trimerellid Brachiopod Gasconsia Northrop. Palaeontology, Vol.28, Part 2. General Brachiopoda - North America Alexander, R.R. (1977). Growth, Morphology and Ecology of Paleozoic and Mesozoic Opportunistic Species of Brachiopods from Idaho-Utah. Journal of Paleontology, Vol.51, Number 6. Anderson, E.J. and J.H. Makurath (1973). Palaeoecology of Appalachian Gypidulid Brachiopods. Palaeontology, Vol.16, Part 2. Cooper, G.A. (1988).Some Tertiary Brachiopods of the East Coast of the United States. Smithsonian Contributions to Paleobiology, Number 64. Ehlers, G.M. (1963). Cyrtina hamiltonensis (Hall) and a New Species of this Brachiopod Genus from New York. Contributions from the Museum of Paleontology - The University of Michigan, Vol. XVIII, Number 12. Feldman, H.R. (1985). Brachiopods of the Onondaga Limestone in Central and Southeastern New York.Bulletin of the American Museum of Natural History, Vol.179, Article 3. Greiner, H. (1957). "Spirifer disjunctus": Its Evolution and Paleoecology in the Catskill Delta. Peabody Museum of Natural History, Bulletin 11. Hanken, N.-M., and D.A.T. Harper (1985). The Taxonomy, Shell Structure, and Palaeoecology of the Trimerellid Brachiopod Gasconsia Northrop. Palaeontology, Vol.28, Part 2. Johnson, M.E. (1979). Evolutionary Brachiopod Lineages from the Llandovery Series of Eastern Iowa. Palaeontology, Vol.22, Part 3. Schuchert, C. (1897). A Synopsis of American Fossil Brachiopoda Including Bibliography and Synonymy. Bulletin of the United States Geological Survey, Number 87. (494 pages, 34.5MB download) Von Bitter, P.H. and R. Ludvigsen (1979). Formation and Function of Protegular Pitting in Some North American Acrotretid Brachiopods. Palaeontology, Vol.22, Part 3. General Brachiopoda - South America/Central America/Caribbean Cooper, G.A. (1979). Tertiary and Cretaceous Brachiopods from Cuba and the Caribbean. Smithsonian Contributions to Paleobiology, Number 37. Sandy, M.R. (1997). Mesozoic Brachiopods of Mexico - A Review and Some Comments on Their Paleobiogeographic Affinities and Paleoecology.Revista Mexicana de Ciencias Geologicas, Vol.14, Number 2. General Brachiopoda Ager, D.V. (1957). The True Rhynchonella. Palaeontology, Vol.1, Part 1. Amos, A. and A.J. Boucot (1963). A Revision of the Brachiopod Family Leptocoeliidae. Palaeontology, Vol.6, Part 3. Baker, P.G. (1990). The Classification, Origin and Phylogeny of Thecideidine Brachiopods. Palaeontology, Vol.33, Part 1. Baker, P.G. (1984). New Evidence of a Spiriferide Ancestor for the Thecideidina (Brachiopoda). Palaeontology, Vol.27, Part 4. Biernat, G. and C.C. Emig (1993). Anatomical distinctions of the Mesozoic lingulide brachiopods. Acta Palaeontologica Polonica, 38(1-2). Biernat, G. and A. Williams (1971). Shell Structure of the Siphonotretacean Brachiopoda. Palaeontology, Vol.14, Part 3. Boucot, A.J. and G.M. Ehlers (1963). Two New Genera of Stricklandid Brachiopods. Contributions from the Museum of Paleontology - The University of Michigan, Vol.XVIII, Number 4. Campbell, K.S.W. (1959). The Type Species of Three Upper Palaeozoic Punctate Spiriferoids. Palaeontology, Vol.1, Part 4. Carlson, S.J. (2016). The Evolution of Brachiopoda. Annual Review of Earth and Planetary Sciences, 44(1). Cooper, G.A. (1983). The Terebratulacea (Brachiopoda), Triassic to Recent: A Study of the Brachidia (Loops).Smithsonian Contributions to Paleobiology, Number 50. (460 pages, 21.3 MB) Cowen, R. (1975). 'Flapping valves' in brachiopods. Lethaia, Vol.8. Emig, C.C. (2002). Tools for linguloid taxonomy: the genus Obolus (Brachiopoda) as an example. Notebooks on Geology, Article 2002/01. Fursich, F.T. and J.M. Hurst (1974). Environmental Factors Determining the Distribution of Brachiopods. Palaeontology, Vol.17, Part 4. Harper, D.A.T. and E. Gallagher (2001). Diversity, disparity and distributional patterns amongst the orthide brachiopod groups. Journal of the Czech Geological Society, (46), 3-4. Johnson, J.G. (1974). Affinity of Dayiacean Brachiopods. Palaeontology, Vol.17, Part 2. MacKinnon, D.I. and A. Williams (1974). Shell Structure of Terebratulid Bachiopods. Palaeontology, Vol.17, Part 1. Mergl, M. (2010). Discinid brachiopod life assemblages: Fossil and extant. Bulletin of Geosciences, 85(1). Plotnick, R.E., et al. (2013). The Orientation of Strophomenid Brachiopods on Soft Substrates. Journal of Paleontology, 87(5). Rudwick, M.J.S. (1964). The Function of Zigzag Deflexions in the Commissures of Fossil Brachiopods. Palaeontology, Vol.7, Part 1. Steele-Petrovic, H.M. (1979). The Physiological Differences Between Articulate Brachiopods and Filter-Feeding Bivalves as a Factor in the Evolution of Marine Level-Bottom Communities. Palaeontology, Vol.22, Part 1. Williams, A. (1968). Evolution of the Shell Structure of Articulate Brachiopods. Special Papers in Palaeontology, Number 2. Williams, A. and L.E. Holmer (1992). Ornamentation and Shell Structure of Acrotretoid Brachiopods. Palaeontology, Vol.35, Part 3. Williams, A. and S. Mackay (1979). Differentiation of the Brachiopod Periostracum. Palaeontology, Vol.22, Part 3. Williams, A. and A.D. Wright (1970). Shell Structure of the Craniacea and Other Calcareous Inarticulate Brachiopoda. Special Papers in Palaeontology, Number 7. Williams, A. and A.D. Wright (1961). The Origin of the Loop in Articulate Brachiopods. Palaeontology, Vol.4, Part 2. Williams, A., et al. (1998). The Diversity and Phylogeny of Paterinate Brachiopods. Palaeontology, Vol.41, Part 2. Wright, A.D. (1981). The External Surface of Dictyonella and of Other Pitted Brachiopods. Palaeontology, Vol.24, Part 3. Wright, A.D. (1971). Taxonomic Significance of the Pseudodeltidium in Triplesiacean Brachiopods. Palaeontology, Vol.14, Part 2. Wright, A.D. (1963). The Morphology of the Brachiopod Superfamily Triplesiacea. Palaeontology, Vol.5, Part 4. Wright, A.D. and M. Melou (1998). Mantle-Body Arrangement Along the Hinge of Early Protrematous Brachiopods: Evidence from Crozonorthis. Palaeontology, Vol.41, Part 4. Wright, A.D. and J. Nolvak (1997). Functional Significance of the Spines of the Ordovician Lingulate Brachiopod Acanthambonia. Palaeontology, Vol.40, Part 1. Wright, A.D. and M. Rubel (1996). A Review of the Morphological Features Affecting the Classification of Clitambonitidine Brachiopods. Palaeontology, Vol.39, Part 1.