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Found 1,325 results

  1. Scabriscutellum furciferum

    From the album Trilobites

    M. Devonian Hamar Laghdad Fm., Morocco Purchased (2018)
  2. Need help. No idea

    Found this on a field trip this fall. Looking for any suggestions on what it could be.
  3. Hi, I have a good selection of self-found Devonian aged marine fossils from Ontario, Canada that I am offereing to trade for shark teeth. I have; -several species of brachiopods -a few species of gastropods -ammonites -corals -Bryozoa -trilobites -and more All of my specimens are self-found and many are identified to genus or species. I can provide detailed location and age data with the specimens. Also, I have lots of photos available upon request, but here are a few to give you and idea. i am looking for shark teeth, especially; -interesting Cretaceous teeth -Carcharocles -Carcharodon and/or cospopolitodus -Cretoxyrhina, Cardabiodon, Dwardius -Palaeocarcharodon -Leptostyrax -Ctetodus -interesting locations -anything else interesting Thanks for looking!
  4. I've always wanted one of these and it's just arrived! I spotted it on the usual auction site where it was being sold by an antique seller as a possible fish in slate . It is true slate but is a legendary Delabole Butterfly, a metamorphosed Cyrtospirifer extensus, almost certainly from the Delabole slate quarry in Cornwall, UK. Although quite famous and widely referred to, there's not that much solid information. They appear to have been sold to tourists, largely in the 19th century and this split specimen seems typical. I think they're quite rare though - most photographed specimens seem to be in museums. Many years ago, I wandered around the edge of the quarry and managed to find one small fragment in the waste. Devonian, Frasnian, about 4" across. ,
  5. Kettneraspis

    Found in Talawarite, Cyphaspides Couche, Morocco Length: trilobite without spines: around 26 mm. Width: trilobite without spines: around 20 mm. Length matrix: around 70 mm. Width matrix: around 57 mm.
  6. Bothriolepis canadensis Whiteaves 1880

    Bothriolepis ("pitted scale" or "trench scale") was the most successful genus of antiarch placoderms with over 100 species found on every continent, including Antarctica . The extinct armored fishes known as placoderms make up what is considered to be the earliest branch of the gnathostome family tree -- the earliest branch of the jawed fishes. Antiarchs are characterized by the fact that their pectoral fins are enclosed in bony tubes (pectoral appendages). Instead of typical fish-like pectoral fins, it bears a pair of rigid arms that are joined at two points. These arms, like the limbs of an arthropod, are articulated by interior muscles. Bothriolepis is a placoderm with a heavily armoured head fused with the thoracic shield. The body was encased in a bony box that had flat sides and bottom and an angled roof. There are two openings through its solidly armoured head -- a keyhole opening along the midline on the upper side for both eyes and nostrils and a mouth on the lower side near the front. The discovey of some undeformed, three-dimensionally preserved specimens led to a review of this fish's morphology. It appears that Bothriolepis had a much more rounded shape than previously thought, and as a direct consequence of the latest reconstructions, it is now believed that its eyes faced forward instead of upward. Bothriolepis does have a slender fish-like tail that extends behind the heavily armored portion but, because it is almost naked with few scales, it is rarely preserved. Placoderms bore heavy bony armor on the head and neck; in the past it has been suspected that there is an unusual joint in the dorsal armor between the head and neck regions; this joint apparently allowed the head to move upwards as the jaw dropped downwards, creating a larger gape. But one of the new discoveries shows there is no indication of mobility between the cephalic and thoracic armors. Bothriolepis had a peculiar spiral, sediment-filled gut and probably grubbed in the mud. It may also have used its pectoral fins to throw sediment (mud, sand or otherwise) over itself. Bothriolepis probably fed on invertebrates such as crustaceans and molluscs or even was a mud-grubber that ingested organic-rich mud for its food. Bothriolepis is the most common fish fossil in the shales and sandstones of the Escuminac Formation (Late Devonian, 380 Ma) on the south shore of the Gaspé Peninsula at Miguasha. Abraham Gesner (1797-1864), the provincial geologist of New Brunswick who discovered the site in 1842, referred to this fossil as "a small species of tortoise with foot-marks". It seems to be certain that there are at least two, with the second species discovered and described in 1924. Named B. traquairi (after the Scottish paleontologist Ramsey Heatly Traquair) the one and only specimen officially assigned to this species has a more slender body than B. canadensis. Because the fossils are found in freshwater sediments, Bothriolepis was originally presumed to have spent most of its life in freshwater rivers and lakes. This idea is now abandoned; many paleontologists now hypothesize that they lived most of their lives in saltwater, and returned to freshwater only to breed. Lit.: Béchard, I., Arsenault, F., Cloutier, R., & Kerr, J. (2014) The Devonian placoderm fish Bothriolepis canadensis revisited with three-dimensional digital imagery. Palaeontologia Electronica, 17(1):1-19 OPEN ACCESS PDF
  7. Ductina vietnamica

    From the album Trilobites

  8. Hello to everyone, I was trying to put together a plan for a spring or summer trip hunting fossils. I am particularly interested in the animals of mahantango formation and would like to know if anyone is familiar with some public locations that allow people to hunt for the fossils from that formation, or at least do not prohibit this. If anyone can point me in the right direction that would be greatly appreciated, Thank you.
  9. Help with fossil from Oklahoma

    Hello looking for help identifying what is on this plate. The label says devonian oklahoma but then gets hard to read maybe ketternopsis willrameri. Thanks in advance.
  10. Devonian of Belgium

    Hello all I found these two fossils in 2014 during a trip in Vierves-sur-Viroin. These are Devonian in age and were found together with trilobites, brachiopods... First one is some piece of coral I guess, no idea what kind. About 3 mm in diameter. Second is a mystery. I have no idea if these are fish vertebrates (which would be rare since it is Devonian) or crinoid parts (never seen any that look like these from the Devonian of Belgium, but I might be wrong) or something entirely else? I see at least 6 of them in the matrix. It's 3D and I don't dare to prep it any further untill I know if it's rare or common. Thanks already.
  11. USA Brachiopoda ID

    Dear USA Brachiopoda enthusiasts, Could you see these images please? What is your expert idea about ID? I know that could be difficult from images. Thank you for any help you can offer. Ricardo
  12. Baliactis sp.

    Could be either B. scutatus Lehmann, 1957, B. tuberatus Lehmann, 1957 or B. devonicus, Spencer, 1927. Lit.: W.M. Lehmann. 1957. Die Asterozoen in den Dachschiefern des rheinischen Unterdevons. Abhandlungen des Hessischen Landesamtes für Bodenforschung 21:1-160
  13. The Milwaukee Formation

    We are very pleased to announce the latest title that is currently in the early stages of preparation, so probably will not be ready for release until late 2018 or early 2019. The title is: Fossils of the Milwaukee Formation: A Middle Devonian Paleoecosystem from Wisconsin, USA by Kenneth (Chris) Gass. This will be a pictorial guide to the animals and plants that lived during the Devonian Period in Milwaukee, Wisconsin, over 380 million years ago, as told by the fossils they left behind. This heavily illustrated book (600 colour photos and line drawings) is supported by the author’s more than fifty years of fieldwork and research on the Milwaukee Formation. Being the first book written on the subject since 1911, it presents in one place a revealing update of its fossilized fauna and flora, and a comprehensive review of the discovery of the formation. It also points to significant insights that have resulted from studying its fossils, ranging from simply revealing new species to providing evidence used in various studies such as the one that attempted to counter the theory of Punctuated Equilibria. Provisional contents Preface Introduction Cementing Its Place in History The Lost 100 Years? The Milwaukee Formation: Its Stratigraphic Position and Subdivisions Life in Devonian Milwaukee The Microfossils The Corals The Conulariids The Bryozoans The Brachiopods The Snails The Clams The Cephalopods The Annelid Worms The Trilobites The Phyllocarids The Echinoderms The Fishes The Plants Notes Bibliography Terminology https://siriscientificpress.co.uk/blogs/news/new-title-in-preparation-fossils-of-the-milwaukee-formation
  14. Very small outcrops northwest of Graz are perhaps the richest site of Silurian fossils in Styria. There may be other sites with somewhat older macrofossils in Styria, but not as rich. The outcrops are part of the Palaeozoic of Graz, a thrust sheet within the Eastern Alps, composed or Silurian to Pennsylvanian sediments. It consists of three separate nappes, the outcrop and fossils presented here belong to the Eggenfeld-member of the Kötschberg-formation within the Rannach nappe. Geological map of Styria with the Palaeozoic of Graz situated north of Graz. The red X is the location of the fossil site. Geological and structural map of the Palaeozoic of Graz. Note that the colors of the Rannach facies and Hochlantsch facies have been accidentally interchanged, the red X is the location of the fossil site. From Gasser et al. (2009). Stratigraphy and facies distribution of the Palaeozoic of Graz. Kötschberg-formation is Nr. 10 (red X), thicknesses of formations are not to scale. From Gasser et al. (2009). The age of the Eggenfeld-member is, based on conodont data, upper Silurian (Ludlow, Pridoli) to lowermost Devonian (Lochkovian). What´s special about this site is the abundance of orthocerids in some only a few dm thick layers of grey to brown dolomite and dolomitic limestone that are intercalated with tuffitic rocks. And also somewhat special is the number of papers dealing with these very small and poor outcrops. The occurrence of orthocerids is known since the 1950ies, a good up-to-date (2010) summary is this paper, it mentions 16(!) nautiloid taxa, most of them orthocerids. Its in English and includes pics of fossils and a stratigraphic section: GPZ_Eggenfeld_Histon_2010.pdf These are the seven nautiloid genera figured in this paper, no species assignment was made.
  15. A Devonian coral site in Louisville, Kentucky, USA
  16. Hyneria lindae

    Prepped by C. F. Mullison Currently in collection of Academy of Natural Sciences, Philadelphia,
  17. Honeycomb tube-like structures?

    Keep finding examples of these honeycomb/tubular structures, what could they be?
  18. Another fossil ID from Ontario

    One of my most recent finds, nothing I can recognize, is it some sort of plant?
  19. Fossils found in southern Ontario

    A selection of one of the fossils I've found in and around Clear Creek while hiking. Any ideas as to what this might be?
  20. Red Hill is a site I first went to 10 years ago with my son, Ian who was 10 at the time. It is a very deep road cut into the uppermost part of the Catskill Formation representing a late Fammenian river system that was draining the Acadian mountains to the east and emptying into the inland sea in western PA and OH. It is one of a handful of sites in the world where Devonian tetrapods have been found. The site has fossil layers in both channel margin (red layers) and flood plain (gray-green layers) facies. While it is an active research site and groups go there under the understanding that anything of scientific importance will be donated to the museum, there is a lot there that is redundant in the collections and we've been able to retain. In 2014, Ian found an exceptionally preserved moderately large osteolepiform, Hyneria (Tristichopteridae). Some of the material went into the re-description of Hyneria, much we have been allowed to take home. Since then the project has expanded to a search for more tetrapod material using the jackhammer and generator the museum purchased. This may require multiple posts. I'll start with the jaws recovered over 2014/15 seasons. This lens containing most of the head from apparently a single individual. Here Ian is working with Ted Daeschler and Doug Rowe (site manager) of the Academy Of Natural Sciences in Philadelphia. Here are some images of the jaw material after removal and after prep by Fred Mullison of the ANSP. Lower left jaw after removal. This is the lower right jaw (right) and the vomer and very impressive fang. Amazingly, in 2016, we went back. I was leading a trip for DVPS. Ian found this amazing but poorly prepped jaw (I did this one). Here are a pair of cleithrums, about 29 cm long. The attachments for the scapulocoracoid are clearly visible between 17 and 21 cm. Here is part of the parietal shield. More to follow.
  21. Zaphrentis sp.

    A common coral at Bundenbach
  22. Wenndorfia planus

    From the album Trilobites

    L. Devonian - Jbel Boulschral, Tafilalt, Morocco
  23. Paralejurus dormitzeri

    From the album Trilobites

    Middle Devonian Hamar Laghdad Fm, Alnif, Morocco
  24. This is an assortment of what I've been told by Devonian fossil experts are "mangal shoots" - tubular shoots growing in an ancient Devonian mud swamp, similar to mangrove shoots. I am told these are most likely shoots of the Wattiezza fern tree, which has been found in Devonian strata in New York. I discovered these in central New York at a construction site where I asked permission to collect some fossils a few years ago. I also collected several Devonian plant stems as well as several of these "mangal shoots". They were found vertically situated from 1 to 3 meters apart, in a layer of fossilized mud. Several stems or roots were also revealed in situ but too fragile to recover intact. The "mangal shoots" are tube shaped, rounded on the top, some have evidence of root structures (similar to swamp tree roots like Cypress, that spread out at the base) and there is a small circular tube structure running down the center. One photo shows the bottom where "root" appendages are shown. None are solid, all are broken into segments. Here are a couple of photos. Any insights and comments would be welcome.
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