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Found 203 results

  1. Cambrian lagerstatt,Burgess type

    Did a quick perusal of the forum and came to the conclusion that this paper might be new to all of you. If not,I apologize beforehand to the previous poster BTW,the source publications has a reputation to uphold.Read it,by all means Cargaineslage.pdf
  2. the edestid way of life

    Taphonomy of a fascinating oddball........... Itano-piscselach2015-AbradedEdestus-final.pdf
  3. Fife PHO PHUM

    I posted this because East Kirkton lit. is rare. It is relatively short,and is a careful analysis of the "Faziesverhaltnisse" ,diagenesis and taphonomy of this famous site. Biotic content: amphibia/"tetrapods"/plant taphonomic mode: silicification Significance:"silicification" and "vertebrate" aren't found in the same sentence often Rolfeetal1990.pdf
  4. Festive occasion

    Good issue of one of my alltime favorite German publication series.Text is in German. Abbreviated contents Alberti on German trilobites(!!!!),alas no line drawings or photographs of specimens Groos on ostracods(paleoz) Foram teratologies a pretty funky and often cited piece by Walliser on the Runzelschicht of ammonites.Required reading!!!! miscellaneous structural geology and petrology http://www.geomuseum.uni-goettingen.de/museum/publications/images/GAGP/pdf/GAGP_Nr 5_Festschrift_Martin_Henno.pdf
  5. Possibly it's just me, or does it seem there are far less posts about fossils in the west. Has this site morphed into a Paleozoic forum?
  6. Givetian North America

    Amongst other things,the article shows North American Paleogeography in the Devonian The correlation chart for Mid-Devonian geochemical events ain't bad ,either Zambito_givetitaghaeventisotop_2015.pdf
  7. ordovician fauna and plates

    old,but good,still cited LARGE FILE!!! http://rspb.royalsocietypublishing.org/content/royprsb/136/883/291.full.pdf NB.:link expires nov.6th
  8. calamites

  9. Whatzit

    Found this in my yard, which is covered in gravel, at least as much as I can afford. I hate mowing. The material is probably Paleozoic, but could be up through the Pleistocene. It is flat on both sides. Initially thought coral, but doesn't look right. Brent Ashcraft
  10. echinoderm or something else?

    Around 1967 Jefferies launched his preliminary ideas on "calcichordates". Many echinoderm specialists are not convinced by his ideas. But: his interpretation of functional morphology makes sense,and his plate nomenclature has been taken onboard by at least some non-adherents of his theory. Although NOT commonly found,in some parts they can be a significant part of the paleofauna. Time to meet a fascinating group of animals! NB:LARGE download,and validity of the link expires soon http://rstb.royalsocietypublishing.org/content/royptb/282/990/205.full.pdf
  11. famous arthropods

    NB.:LARGE!! NNB.:get it while you can(edit:works to nov.6th) http://rstb.royalsocietypublishing.org/content/royptb/272/920/537.full.pdf
  12. not burning down the house

    large file Might be gone soon http://rstb.royalsocietypublishing.org/content/royptb/250/763/79.full.pdf
  13. Carboniferous coral ecology

    This one is from palcubed,2009,and ONLY contains B&W pix I like it wilsonrugoscoralecologyencrustpal3.pdf
  14. Mottled

    Found this in beach gravel while on lunch break.
  15. Galena/Platteville

    Willmann et al: https://archive.org/details/plattevillegalen502will About 4 Mb
  16. Edestus heinrichi Tooth

    Hi, I was just wondering what was considered large for a single Edestus heinrichi tooth. I have recently bought one and it was around 1.6" wide. It was labeled as being big, but I just wanted another more experienced opinion on it. Thanks for your time.
  17. Unknown Paleozoic shark teeth

    Hello, forgive me for posting these on your thread but I have a few paleo teeth and would like some info if possible. I found these in Oklahoma. A couple of Petalodus here and I was wondering if these are average in size, quality, etc. I was fortunate in that the big one I found all of the pieces of it except for some minute parts. I think the small one is a Agassizodus? The other I don't know, maybe a Deltodus? Thanks!
  18. If you have ever collected fish from the classic vertebrate locality near Linton, Ohio or have obtained fish specimens from there, I would like to share some of what I have learned about the type of fish called paleoniscoids (also spelled palaeoniscoids) that occur there. Paleoniscoid fish have thick, rhomboidal scales made of dentine-type bone with a surface of hard enamel-like material called ganoin and on the external surface of the ganoin there are pits and fine canals. They resemble (body-wise) what most people think of commonly as a “fish-shape” except they have “armor-like” scales. They are set apart from the chondrichthyans (sharks), the dipnoans (lungfish) and the coelacanths, which also occur in the Linton cannel. The Linton paleoniscoids can be divided into two family groups, the elonichthyids (1 species) and the haplolepids (6 species). I’ve attached a pdf file called “1. Identifying Linton Paleoniscoid Fish” which describes the fishes for species identification. I tried to keep the terminology minimal, but to describe the differences some was necessary. To aid in identifying haplolepid species, I have put together an illustration called “Linton Haplolepids”. The accompanying jpegs show the illustration and most of the different paleoniscoid types. Because I no longer have any specimens (see pdf file: “2. My Linton Collection and Recollections”), I cannot provide photos of two of the species. I hope this information will be useful and bring about more interest in learning about and collecting in coal measure deposits wherever they occur. 1a Identifying Linton Paleoniscoid Fish.pdf 2 My Linton Collection and Recollections.pdf
  19. Last night, a friend informed me of the passing of Don Smarjesse and asked me to post this obituary: Don Smarjesse of Novi, Michigan died early this April after a long passage through Alzheimer's disease. Don operated Earth Enterprises for around two decades selling fossils primarily from Devonian quarries in Sylvania, Ohio and Milan, Michigan, along with mineral specimens from the latter locality. At M.A.P.S. and the Denver and Tucson shows, Don did a brisk business offering trilobites, crinoids and brachiopods along with beautiful sulphur and celestite crystals, all of which he personally collected and carefully prepared. People liked Don and Don reciprocated. He had a genuine and entertaining personality which was a source of delight across a spectrum of intimates, customers and chance acquaintances. We will miss that trademark conviviality, stories which never aged by retelling, his humor and those colorful verdicts indicating certain vexatious people somehow failed to offer ongoing evidence for human evolution. Though his illness put him beyond contact for some time now and his collections have been dispersed, his character as a man and sturdy friend will remain touchstones of our conversations. Don's widow and devoted caretaker Gayle survives him. *** I knew Don too. What I remember about him is that he used to share a room in Tucson with a couple of other guys. They were there to sell fossils and minerals but they also wanted people to feel welcome and free to join their conversation even if they weren't going to buy anything. Some people are all-business and shut up when people they don't know enter the room. In the Earth Enterprises room it was like there was a friendly talk show going on all day. The thing about the Tucson shows is that they have been spread out around the city since at least the late 80's. Sometimes, it was (and still is) easier to walk from one place to another, even if it was a bit of a hike (2-3 miles), because of the limited parking at some of the venues especially if it had rained hard the day or two before. It was nice to take a break and shoot the breeze with those guys. I think Don stopped setting up at shows around 2000. The shows seem to have gotten a little more impersonal since then. Jess
  20. I just got finished working on this PDF file. It's a PDF of "The Paleozoic Fishes of North America" by John Strong Newberry from 1889. It is in two parts; text and plates. There are some versions on the Internet but none are really in complete or presentable form. One "good" version is missing a lot of the picture plates because the compilers chose to export as one small page size and so picture plates are chopped in half or totally missing. Another web version is just raw scans of the pages with no color filtering meaning the pages are all dark orange and low contrast. My version combines the relative clean text of one version with color corrected plates of the other version. I also took the time to manually crop and reframe all the pages so it prints comfortably on regular 8x11 paper. The originals had the text hugging the left margin (not good for putting in a binder) and the paper was too tall. While I did do an OCR scan I have not manually checked the text which would take days and days given all the scientific words not in the dictionary. The other drawback is the scale on the pictures is kinda useless since some of the plates were originally twice as big (foldouts) as what they are here. I figure anyone using this for an ID will go to the picture plates and the index anyways. Right-click and "save as / save link as" to avoid loading these large PDFs into the browser. Enjoy http://www.northtexasfossils.com/pdfs/PaleozoicFishes-text.pdf (11 meg) http://www.northtexasfossils.com/pdfs/PaleozoicFishes-plates.pdf (30 meg)
  21. I saw this book at a Barnes & Noble yesterday: http://www.amazon.com/Trilobite-Book-Visual-Journey/dp/022612441X/ref=sr_1_1?s=books&ie=UTF8&qid=1403737304&sr=1-1&keywords=trilobites
  22. a book review of: "Richardson's Guide to the Fossil Fauna of Mazon Creek" by Charles W. Shabica and Andrew A. Hay (editors). 1997. Northeastern Illinois University. 308 pages. Original suggested retail price: $70? One tributary of the Illinois River has become an important landmark in the world of paleontology. Fossils are found along and within many waterways but they are almost always isolated shells, teeth, and bones and even these more durable elements are often worn down to unrecognizability. The miracle of this tributary, Mazon Creek, is that the remains became encased within hardening sedimentary structures, nodules, approximately 305 to 310 million years ago. Some of these nodules contain those usual isolated hard parts but the conditions of the environment also allowed a percentage of them to preserve impressions of soft tissues and even whole soft-bodied organisms - a level of preservation rarely allowed by the elements across time. Though these nodules are found at other localities in the same general region from the same rock layer, the Francis Creek Shale, "Mazon Creek" stuck as the nickname for all the nodule-bearing sites and their fossils. "Richardson's Guide to the Fossil Fauna of Mazon Creek" was the first attempt to comprehensively review the known animal fossils from the Late Carboniferous deposit. The Mazon Creek plants had been similarly documented already. This book was born from a project started by Dr. Eugene S. Richardson Jr., a curator at the Field Museum of Natural History still fondly remembered as a leading Mazon Creek researcher and amateur-friendly museum representative. His untimely passing in 1983 left his work unfinished but also inspired a rare collaboration. Dr. Charles W. Shabica and Andrew A. Hay, acted as the book's editors overseeing 33 chapters written or co-written by several authors including themselves. Shabica was a graduate student of Richardson. and at the time of the book's publication. was a Professor of Earth Science at Northeastern Illinois University. He was the one who set out to complete Richardson's project. Andrew A. Hay is a retired geologist and book editor who continued to maintain a relationship between private collectors and scientists in the wake of Richardson's passing. An apparent all-star cast of experts compose the other chapter authors. I have to confess ignorance of many of them but I knew Rainier Zangerl's name because he wrote the Paleozoic Elasmobranchii volume (Chondrichthyes 1) of the Handbook of Paleoichthyology series and Frank M Carpenter, who wrote Chapter 13A but died three years before this book was published, was one of the foremost authorities on insects. Following a preface partly written by Richardson, the first chapter offers a general overview of what it was like collecting fossils at Pit 11, an area of an Illinois coal mine known to produce some rare Mazon Creek forms. Before a series of chapters reviewing the fossils (sometimes by scientific group; sometimes by convenient grouping), several others cover a number of connected topics: local history of coal mining; geology of the area; distribution of fossils; relative abundance of organisms; preservation of specimens; reconstruction of the living environment and significance of the deposit. Three appendices offer the most efficient techniques of splitting the nodules, a faunal list with additional notes, and a list of taxa named after collectors, professional and private. There are also pages providing a brief background on each of the authors and a list acknowledging the chapter reviewers. The writing drifts from casual to technical in the early chapters, but even in the taxon descriptions, I think the intermediate-level enthusiast can follow along. By the mid-1990's, Mazon Creek collectors had been waiting for a book like this for decades. While it is true that much of the information already existed in the professional literature, those articles were often published in less-accessible journals out of even the virtual reach of most university libraries. Some of the chapters (e.g. Bivalvia) open with a generous amount of background information (basic anatomy, chronologic range, etc.) which gives the novice a good level of grounding before having to tackle the description and interpretation of sometimes rather indistinct impressions. Other chapters (e.g. cartilaginous fishes) dive right into the taxon descriptions. I think the editors should have pushed for more introductory information to be inserted in those less-prefaced chapters, but for a book with multiple authors, it all seemed to fit together well enough. I liked the chapters that discussed how the Mazon Creek fauna fit into the larger Late Carboniferous world - similarities to faunas known from Oklahoma, Indiana, and western Europe. The reader learns that the fauna was unusual even its own time, previewing a trend of the distant future. In Chapter 5A the reader sees a paleogeographic map of that time showing the major landmasses almost clustered together with the last pieces of the Pangaean puzzle near assembly. Chapter 14B adds further analysis. It looks into the origin of flight in insects with notes on the origin of metamorphosis as well - transitions not often addressed in mainstream publications. Wing development occurred perhaps 20-50 million years before the time of the Mazon Creek fauna but some of the rare insect specimens offer clues to which anatomical structures evolved into wings - evidence largely absent elsewhere in the fossil record. The discussion adds another claim to fame for the deposit beyond its astounding level of preservation, great diversity of forms, and first (or only) appearances of various groups. The illustrations, other than the front cover, are in black-and-white. I have been told that some specimens show some startling color but the vast majority seem somewhat lighter or darker than the reddish-brown nodules that contain them. Some of the contrast is often best perceived in the texture of the fossil impression. Therefore, the lack of color photography or figures does not subtract from the value of the book. The photography is excellent, well-lit and angled to capture the depth of a faint imprint. Many fossils are paired with handrawn reconstructions of equal quality. In the drawing the reader sees the what the researcher knows or has deduced from several specimens, some showing a certain anatomical feature better than others. One thing the novice learns from this book is that each nodule is less like a box of Cracker Jacks and more like a lottery ticket. We see so many nicely-articulated specimens at shows and in books (including the spider on the cover of this one), that it can come as a surprise that almost two-thirds of the hundreds of thousands (perhaps millions) of nodules that have been collected turned out to be "duds" - nothing inside. Sometimes, just a whitish haze or disconnected hash of fragments is all that's left of whatever was encased. "Richardson's Guide to the Fossil Fauna of Mazon Creek" is one of the most complete reviews of any deposit I have read. It was well-conceived, structured to address a spectrum of related topics, and well-executed, assembling all the relevant details efficiently. It brings an understanding of arguably the most remarkable fauna in the fossil record from a time when life, fanning out on land and establishing complex ecosystems, would have seemed unstoppable. Jess
  23. Silurian; Gotland; Sweden

    From the album Some of my Fossil collection

    Rare and nice gastropod from the well known and famous silurian site at Gotland; Sweden. Still with his original shell!!!
  24. a book review of: Evolution of the Insects by David Grimaldi and Michael S. Engel. Cambridge University Press. 2005. 755 pages. Hardcover retail $120 USD. When I was in the sixth grade in the 1970's, each of us had to build an insect collection for science class. We learned about biological classification before we started because each collection had to have at least nine different taxonomic orders represented. At the time I had an up-to-date insect identification guide to help me. What I didn't know then was that a basic reevaluation of the taxonomy of insects and all other organisms was in progress. It involved a more detailed study of anatomical characters and incorporated information from ongoing genetic and molecular research. This reevaluation would not completely alter the tree of life but many twigs would be rearranged onto different branches with even some branches repositioned as scientists recognized more precise indicators of ancestry. "Evolution of the Insects" is a volume that attempts to address every major aspect of the evolutionary history of insects. It's an especially ambitious goal when you consider that there are more species of insects (over 925, 000) than there are species of all other organisms put together (other invertebrates, vertebrates, plants, fungi, and all microorganisms). And that's just the modern species. Insects have risen or dwindled in diversity at different times in the geologic past just like any other class of organisms. Some have even died out across their long history which extends perhaps 400 million years The authors are both paleontologists who have traveled around the world collecting modern and fossil insects. Dr. David Grimaldi is Curator of Invertebrate Zoology at the American Museum of Natural History and adjunct professor at three universities. Dr. Michael S. Engel holds two positions at the University of Kansas: Professor in the Department of Ecology and Evolutionary Biology and Curator in Charge in the Division of Entomology at the Natural History Museum. He is also a Research Associate at the American Museum of Natural History. Chapter 1 introduces insect diversity and evolution. The topics range from the basic concept of the species and total insect species estimates to biological classification, history of research, and paleontology. Chapter 2 looks at the types of fossil insect preservation (compressions, impressions, amber inclusions, etc.) and the major fossil insect deposits of the world. Chapter 3 covers the arthropods, their relationship to other phyla, their diversity, and the origin of insects. Chapter 4 breaks down the anatomy of insects, the interrelationships of insect groups, and the history of entomological research. Chapters 5 through 13 review the known extinct and modern insect orders as they are now understood. Chapter 14 focuses on the evolution of the modern groups of insects and how it is linked to the rise, development, and spread of flowering plants (and other organisms) during the Cretaceous and across the Cenozoic. The reader also learns how insects were affected by the K/T extinction event and the break-up of the continents across the Cretaceous and Cenozoic. The text is technical but the first three chapters prepare the layman for that. "Technical" can mean difficult to read for the average reader but it also means detailed - the kind of detail some collectors are hoping for but cannot get in a mainstream fossil guide. This book taught me how insect interrelationships have been reinterpreted since I was in elementary school. For instance, mantises, once included within the Orthoptera with the grasshoppers and crickets, are now classified in their own order, the Mantodea. A mantis might look like a predatory grasshopper but it does not share the same modifications of anatomical characters that indicate a close relationship to grasshoppers. The particular complexity of the male reproductive organs of roaches, mantises, and termites unite them as relatives (orders within the superorder Dictyoptera) and separate them from other insect groups. Whether the reader approaches this book as something to be absorbed in its entirety (the entomologist seeking to expand perspective) or in sections (the serious hobbyist wanting to increase expertise on particular groups), I think everyone should read Chapter 14. It's the condensed history of modern insects starting in the Cretaceous, when perhaps half of today's families appeared, and it shows them against the background of a changing world. The reader sees the birth and development of complex plant-insect (as well as bird-insect and mammal-insect) relationships that we see in action today. This chapter alone would be an excellent reference for someone looking for a broader discussion of insect ecology. The preface points out that there are two other similar references available (the hexapod section of the "Treatise of Invertebrate Paleontology" by Carpenter, 1992; "History of Insects" by Rasnitsyn and Quicke, 2002). However, they are less-amateur friendly and focus only on fossil insects. Also, "History of Insects" sells for a few hundred dollars. Since "Evolution of the Insects" shows modern and fossil insects of the same order side-by-side, the reader gets the "big picture" in one book . This book provides a rich mix of detailed drawings and excellent close-up photos of fossil and modern specimens (including SEM shots of tiny forms and anatomical characters) along with numerous charts and tables. The photos are especially abundant in the chapters that discuss the orders, and in case anyone is wondering, there are a lot of nice shots of great amber specimens from several localities around the world. I would recommend this book to entomology students and serious fossil insect collectors. Even if the reader is just thinking of getting serious, I would suggest acquiring this book because it is a reference to grow into. The general fossil collector building a personal library of comprehensive volumes on various groups of organisms should invest in a copy as well. It's expensive but well worth the price. Jess
  25. I have been collecting chert gravel fossils from the Bogue Chitto river near Franklinton, LA off and on for the last couple of years. These fossils come from the Citronelle Formation, which is Pliocene in age, and contains mostly unconsolidated sands and silts, as well as rounded chert river gravel which contains paleozoic fossils. The age is poorly known, as far as I am aware, and probably contains fossils of very different age. The most reputable source I have found on the subject was mentioned in an earlier post in the Louisiana section of the forum: (http://www.msgravel.com/assets/1312/Rocks_and_Fossils_Collected_from_MS_.pdf), but I'd be happy to learn more on the subject. According to the link, they range in age from the Devonian to the Mississipian. From my experience, crinoid fossils are the most abundant. Tabulate coral, horn coral, bryozoans, and brachiopods are less common. I just posted some of my finds to the Louisiana section of the forum: (http://www.thefossilforum.com/index.php?/topic/39199-paleozoic-chert-gravel-fossils-from-bogue-chitto-river-washington-parish-citronelle-formation/) I have two finds in particular, however, that have stumped me. The first looks like a shark tooth, but is just an outline, and has been worn down. I think this one may be a pseudofossil. The second is more interesting. I will post a couple of pictures and then a higher quality one in a second post. Superficially, it reminds me of a cross section of a tree seed, but I don't think that's a possibility, considering all the other fossils are marine and paleozoic in age. It is bilaterally symmetrical, so perhaps a chordate or arthropod? I really have no clue. Sorry for the picture quality, I need a better camera Let me know what you think!