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Found 29 results

  1. Pre/Cambrian Collection

    I have always been quite fascinated with the early stages of development of life on Earth. My interest really picked up when I first discovered the Ediacaran biota, and who can blame me. Those creatures are so enigmatic and fascinating. I was able to pick up a few specimens, but quickly realized that my desire for fossils greatly outweighed the supply and cost of Ediacaran fossils, and I soon discovered the equally fascinating and enigmatic Lower Cambrian Chengjiang biota. I was, and still am, blown away at the quality of preservation of these soft bodied critters. A lot of specimens come very shoddily or incompletely prepared, and while it's been a steep learning curve, I feel that I'm starting to get the hang of prepping them. I've decided to start posting my latest acquisitions as these fossils are too amazing not to share. First up is Cricocosmia jinningensis, a fairly common palaeoscolecid worm from the Chengjiang biota. I have several specimens but this one is the best. It came partially prepped and I am just now satisfied with the result. You can see remnants of the gut preserved as darker regions in the center of the body. Next up is a small hash plate of Bohemiella romingeri brachiopods from the Middle Cambrian of the Czech Republic. Not my usual purchase, but I felt the specimen was too beautiful to pass up.
  2. Controversial fossils suggest life began to move 2.1 billion years ago. New Scientist, February 11, 2019 https://www.newscientist.com/article/2193557-controversial-fossils-suggest-life-began-to-move-2-1-billion-years-ago/ The paper is: Abderrazak El Albani, M. Gabriela Mangano, Luis A. Buatois, Stefan Bengtson, Armelle Riboulleau, Andrey Bekker, Kurt Konhauser, Timothy Lyons, Claire Rollion-Bard, Olabode Bankole, Stellina Gwenaelle Lekele Baghekema, Alain Meunier, Alain Trentesaux, Arnaud Mazurier, Jeremie Aubineau, Claude Laforest, Claude Fontaine, Philippe Recourt, Ernest Chi Fru, Roberto Macchiarelli, Jean Yves Reynaud, François Gauthier-Lafaye, and Donald E. Canfield, 2019, Organism motility in an oxygenated shallow-marine environment 2.1 billion years ago PNAS published ahead of print February 11, 2019 https://doi.org/10.1073/pnas.1815721116 https://www.pnas.org/content/early/2019/02/05/1815721116 Yours, Paul H.
  3. Oldest Known Animals Reported From China

    Exclusive: 600-million-year old blobs are earliest animals ever found Fossils in China suggest that that some of the first animals in existence may have been carnivorous comb jellies similar to some species that still exist today. New Scientist, January 23, 20-19 https://www.newscientist.com/article/mg24132142-700-exclusive-600-million-year-old-blobs-are-earliest-animals-ever-found/?utm_campaign=RSS|NSNS&utm_source=NSNS&utm_medium=RSS&utm_content=news An older article is: https://www.newscientist.com/article/2180053-earliest-known-animal-was-a-half-billion-year-old-underwater-blob/ Unfortunately, it is behind a paywall. It was discussed today on BBC radio. A related article is: Scientists Think Comb Jellies May Have Come Before All Other Animals Sorry, sponges—there’s a new oldest ancestor in town, Smithsonian https://www.smithsonianmag.com/smart-news/scientists-think-comb-jellies-may-have-come-all-other-animals-180962858/ https://ocean.si.edu/ocean-life/invertebrates/jellyfish-and-comb-jellies Yours, Paul H.
  4. Zumbergloverohrsreetalproxyporifer.2018online.pdf Demosponge steroid biomarker 26-methylstigmastane provides evidence for Neoproterozoic animals J. Alex Zumberge, Gordon D. Love, Paco Cárdenas , Erik A. Sperling, Sunithi Gunasekera, Megan Rohrssen, Emmanuelle Grosjean, John P. Grotzinger and Roger E. Summons Nature Ecology & Evolution 10.1038/s41559-018-0676 inherently interesting..
  5. ediacaran finds

    arrodiscoiscyphozoanaturesrep30590.pdf Ediacaran discs from South America:probable soft-bodied macrofossils unlock the paleogeography of the Clymene ocean Maria Julia Arrouy,Lucas V.Warren,Fernanda Quaglio,Daniel Poire ,Marcello Guimares Soares,Milena Boselli Rosa,Lucia E.Gomez Peral * Nature Scientific reports (6) 30590 publ.: 27-7-2016 *all diacritics omitted
  6. Some recommended Precambrian reading

    Schopf Precambrian microbe-like pseudofossils: A promising solution to the problem J. William Schopf , Anatoliy B. Kudryavtsev , Kenichiro Sugitani , Malcolm R. Walter Precambrian Research 179 (2010) 191–205 When some famous names in Pre-Phanerozoic paleontology get together,things get interesting. And these names certainly loom pretty large in that field Unreservedly recommended for those interested in "the Early Earth"
  7. Good morning everybody, For anyone interested! Mid January 2019 I’ll publish a new book (in Italian, the english version is planned in 2020, but only if I'll recover the printing and translator costs) ‘Spiagge Cambriane. Meduse e tappeti algali’ [Cambrian shorelines - Jellyfish and Algal mats]. It concerns fossil jellyfish (and cnidarian in general) and their relation with algal mats, as a principal factor of the taphonomy of these soft-bodied organisms, covering fossils lagerstätten from Precambrian to the French Oligocene. The 232 pages book is rich of inedit illustrations coming from worldwide private and public collections, wonderful dioramas and includes a nice poster resuming the paleogeography and sites where these fossils come from. The first print will be limited (250 copies). Have a sneak preview (introduction, table of contents, bibliography and index) here: https://tinyurl.com/ybh8zb3t Do not hesitate to reserve your copy in time (but without engagement). If interested, please contact me with a message. Enrico
  8. U might have split

    bentridiseghouroklolagerstafissionlagerstaCRGeo2011_article.pdf Inception and evolution of Oklo natural nuclear reactors Genese et evolution des reacteurs nucleaires fossiles d’Oklo Salah-Eddine Bentridi, Benoıt Gall , Francois Gauthier-Lafaye C. R. Geoscience 343 (2011) 738–748 This is the world's only (and oldest)known natural fission reactor.....................
  9. building blocks

    here Norio Kitadai,Shigenori Maruyama: Origins of building blocks of life: A review* Geoscience Frontiers,(9)-2018 Some prior knowledge of organic geochemistry might be helpful,but is not required for understanding this About 5,6 MB * it is what it say on the tin:a reasonably long comprehensive view of the state of the art
  10. So I've had a hankering for some Precambrian fossils. In Utah, according to this article, there is cyanobacteria fossils present in Utah. Does anybody have any examples of Cyanobacteria fossils that they'd like to show the world so I can have an idea what I'm looking for? If you know anything extra about localities or examples of the Red Pine Shale fossils and don't want to share with everybody we can PM. I'm just trying to get a feel for them before I head out. Thanks.
  11. There is a website that describes a controversial fossil found in 2003: http://www.abc.net.au/science/articles/2003/11/10/984724.htm Since it doesn't have a name at the time of publishing, I'm finding it difficult to find more information on it.
  12. As a young mineral, crystal and fossil collector, I was perusing through my uncle's 1962 copy of "Scientific American". In it was an article on recently described "Animals" of the Precambrian period. I was fascinated by the artist's abstract rendition of these critters as they may have lived. The early scientists were beguiled as was I. Naturally, collectors envision finding great things themselves and so the wanting started. Fast forward to 2016 and I find myself retired. Nearly all localities of these Precambrian sites are protected and I realize I won't be digging these fossils anytime soon. My next move was, those who cannot collect , buy. In the order of Jonesing I wanted a Dickinsonia. Then came my two Kimberella. And my last hold out was Tribrachidium. At this point any Vendian creature I get is just a plus, Jonesing is a whimsical thing that can break your piggy bank.
  13. Large and reasonably old

    VERY HIGHLY ,nay,UNRESERVEDLY recommended,3,2 Mb This is for all those who are interestested (almost said "this is dedicated to all those interested" in the earliest history of (multicellular) animals!!!!!!!!!! in Earths earliest biota... myanknollszieparamNaturellular_eukaryotes_from_the_.pdf Give it a go, because Zhu and Knoll do know their paleobiology. I would NOT be far wrong in saying that now that Martin Brasier is no longer with us, Knoll is one of the biggest names in "early earth/astrobiology".
  14. Rise of Animals, Fedonkin et al.

    I just finished reading this one. I do recommend it for the early-life nuts among us. It's chock full of eye candy, diagrams and info on everything Precambrian, not just Ediacaran though that is the focus, and into the Cambrian as well. State of the art as of 2007.. I'd like to see an updated edition if there ever is one. There is an introductory section covering everything from the universe and the origin of Earth and of life, early macroscopic fossils, the Snowball Earth and so on, then gets into the meat of the different sites (major and minor) bearing Ediacaran fossils including some of the history of the sites' discovery, and of course the thinking around what the different critters are and how they evolved. I particularly like the 'Atlas of Precambrian Metazoans' toward the back. Sample pages:
  15. The is an online Youtube video of a series of talks by well-respected sedimentologists on pre-vegetation river systems. It is quite informative series of talks about what is known and unknown concerning river systems before the advent of land vegetation. The conference is at: https://www.youtube.com/watch?v=FQ-O8YEXtjQ The text about it states: “This is a recording on the online conference on "Pre-vegetation river systems" (September 16, 2016). Talk by Jim Best, Darrel Long, Phil Fralick, Renato Almeida, Mauricio Santos, Alessandro Ielpi, Arjan Reesink, and James Syvitski” Yours, Paul H.
  16. https://www.sciencedaily.com/releases/2018/03/180312091407.htm
  17. BrainravediacarFirst(2012).pdf edit: about 3,8 Mb Notice the array of imaging techniques "Cyrogenian" is,of course,a typo Highly recommended to all those interested in early metazoan life Namibia is renowned(ever since the pioneering work of Hans Pflug)for its Neoproterozoic fossils Poriferan chemofossils had indicated the possibility of Precambrian porifera (Brasier et al/Geol.,1997):
  18. Did the First Animals Live in a World Without Oxygen? A new study suggests the answer may be yes. https://www.airspacemag.com/daily-planet/did-first-animals-live-world-without-oxygen-1-180967792/ Stolper, D.A. and Keller, C.B., 2018. A record of deep-ocean dissolved O2 from the oxidation state of iron in submarine basalts. Nature, 553, pages 323–327 Received: 10 July 2017, Accepted: 02 November 2017 Published online: 03 January 2018 https://www.nature.com/articles/nature25009 yours, Paul H.
  19. I'm sure you've all seen that banded iron tiger eye stuff from Australia: (pic from Mindat) Does anyone know with confidence anything about it - especially the age and formation name? I find various info online, some of which conflicts. Some say Archean, 2.7by, some say Early Proterozoic... and is it currently accepted as Nimingarra Formation or what? Can anyone find a stratigraphic column showing where this stuff is situated? I can't. I just want the basic info about it, but from a more trustworthy source than the usual websites that get their info from who-knows-where. I know some of you are good at finding literature on sundry subjects. I understand there are two sites in Western Australia that the stuff we find in lapidary shops/etc is likely to be from (see mindat). I don't suppose there's a way to tell which spot the piece you've got came from. If both sites are the same formation I guess it doesn't matter much. And is it stromatolitic, or just sediments containing precipitated iron/iron oxide?
  20. 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 June 7, 2018. Kingdom incertae sedis Clade Arboreamorpha Laflamme, M., J.G. Gehling and M.L. Droser (2018). Deconstructing an Ediacaran frond: three-dimensional preservation of Arborea from Ediacara, South Australia. Journal of Paleontology, 92(3). Clade incertae sedis Bykova, N., et al. (2017). A geochemical study of the Ediacaran discoidal fossil Aspidella preserved in limestones: Implications for its taphonomy and paleoecology. Geobiology, 2017; 15. Clapham, M.E., et al. (2004). Thectardis avalonensis: A New Ediacaran Fossil from the Mistaken Point Biota, Newfoundland. J.Paleont., 78(6). Sperling, E.A., K.J. Peterson and M. Laflamme (2011). Rangeomorphs, Thectardis (Porifera?) and dissolved organic carbon in the Ediacaran oceans. Geobiology, 9. Clade Rangeomorpha Bamforth, E.L. (2008). Multibranched Rangeomorphs from the Ediacaran Mistaken Point Assemblage, Newfoundland, Canada. Masters Thesis - Queen's University. (133 pages) Brasier, M.D., J.B. Antcliffe and A.G. Liu (2012). The Architecture of Ediacaran Fronds. Palaeontology, Vol.55, Part 5. Brasier, M.D., et al. (2013). Explaining the exceptional preservation of Ediacaran rangeomorphs from Spaniard's Bay, Newfoundland: A hydraulic model. Precambrian Research, 231. Dzik, J. (2002). Possible Ctenophoran Affinities of the Precambrian "Sea-Pen" Rangea. Journal of Morphology, 252. Flude, L.I. (2009). Ediacaran Rangeomorphs in the Mistaken Point Biota, Newfoundland. Masters Thesis - Queen's University. Grazhdankin, D. and A. Seilacher (2005). A re-examination of the Nama-type Vendian organism Rangea schneiderhoehni. Geol.Mag., 142(4). Hoyal Cuthill, J.F. and S.C. Morris (2014). Fractal branching organizations of Ediacaran rangeomorph fronds reveal a lost Proterozoic body plan. PNAS, Vol.111, Number 36. Laflamme, M. (2007). Ediacaran Fronds from the Mistaken Point Assemblage, Newfoundland. Ph.D. Thesis - Queen's University. (27.7MB download) Laflamme, M. and G.M. Narbonne (2008). Competition in a Precambrian world: palaeoecology of Ediacaran fronds. Geology Today, Vol.24, Number 5. Laflamme, M. and G.M. Narbonne (2008). Ediacaran Fronds. Palaeogeography, Palaeoclimatology, Palaeoecology, 258. Liu, A.G., J.J. Matthews and D. McIlroy (2015). The Beothukis/Culmofrons Problem and Its Bearing On Ediacaran Macrofossil Taxonomy: Evidence from an Exceptional New Fossil Locality. Palaeontology, 2015. Liu, A.G., et al. (2013). Exploring an Ediacaran 'nursery': growth, ecology and evolution in a rangeomorph palaeocommunity. Geology Today, Vol.29, Number 1. Liu, A.G., et al. (2012). A new assemblage of juvenile Ediacaran fronds from the Drook Formation, Newfoundland. Journal of the Geological Society, London, Vol.169. Sperling, E.A., K.J. Peterson and M. Laflamme (2011). Rangeomorphs, Thectardis (Porifera?) and dissolved organic carbon in the Ediacaran oceans. Geobiology, 9. Vickers-Rich, P., et al. (2013). Reconstructing Rangea: New Discoveries from the Ediacaran of Southern Namibia. Journal of Paleontology, 87(1). Phylum Petalonamae Antcliffe, J.B. and M.D. Brasier (2008). Charnia at 50: Developmental Models for Ediacaran Fronds. Palaeontology, Vol.51, Part 1. Antcliffe, J.B. and M.D. Brasier (2007). Charnia and sea pens are poles apart. Journal of the Geological Society, London, Vol.164. Dzik, J. and A. Martyshyn (2017). Hydraulic sediment penetration and seasonal growth of petalonamean basal discs from the Vendian of Ukraine. Precambrian Research, 302. Ivantsov. A. Yu. (2016). Reconstruction of Charniodiscus yorgensis (Macrobiota from the Vendian of the White Sea). Paleontological Journal, Vol.50, Number 1. Ivantsov. A. Yu. and D.V. Grazhdankin (1997). A New Representative of the Petalonamae from the Upper Vendian of from the Arkhangelsk Region. Paleontological Journa., Vol.31, Number 1. Laflamme, M., G.M. Narbonne and M.M. Anderson (2004). Morphometric Analysis of the Ediacaran Frond Charniodiscus from the Mistaken Point Formation, Newfoundland. J.Paleont., 78(5). Laflamme, M., et al. (2007). Morphology and taphonomy of an Ediacaran frond: Charnia from the Avalon Peninsula of Newfoundland. In: The Rise and Fall of the Ediacaran Biota. Vickers-Rich, P. and P. Komarower (eds.), Geological Society, London, Special Publications, 286.
  21. Hey guys I remember the ROM has on display a slab cast of Mistaken Point, Newfoundland fossils on the Dawn of Life Preview Gallery. Being an admirer of Mistaken Point is there a place where we could perhaps get these replicas? Or are collectors allowed to go to Mistaken Point and take casts of the fossils there for keepsakes? I understand no one is allowed to take fossils there due to government laws so I am hoping that casts are an excellent alternative for amateur collectors.
  22. Conotubus--my new latest favorite fossil. It's an Ediacaran (latest Neoproterozoic--AKA, Precambrian) tubular critter of unestablished zoological affinity (educated guesses include an annelid--specifically some kind of tube worm--or possibly a sea anemone-like animal). And it's been recovered from only two localities on Earth: southern Shaanxi Province, South China; and at one lone site in Nevada. Conotubus shows superficial similarity to the well known Ediacaran tube-type specimen Cloudina, but lacks a mineralized skeleton. Conotubus apparently secreted a tubular home enclosure composed of chitinous material. Image from HERE. Above, two views of the same pyritized (replaced at least partially by pyrite--an iron disulfide, of course, commonly called "fool's gold") Conotubus from the upper Precambrian Esmeralda Member of the upper Precambrian-lower Cambrian Deep Spring Formation, Nevada, where Conotubus occurs several feet below the first appearance of the ichnofossil Trepichnus pedum, which presently helps define (along with geochemical evidence-- a sudden, dramatic negative excursion of a specific carbon isotope) the worldwide base of the Cambrian Period, the transition from Ediacaran times to the earliest moments of the Paleozoic Era. Photograph is a Google Image grab, by the way. Image from HERE. Examples of pyritized Conotubus hemiannulatus from the Ediacaran, late Neoproterozoic Gaojiashan Lagerstätte of southern Shaanxi Province, South China. Photograph is a Google Image grab, by the way.
  23. possible late proterozic fossils

    I've found fossil imprints in rocks near my cottage south west of Charlottesville, Virginia. The land is eroded, exposing a contact that appears on the Virginia state geologic maps at https://www.dmme.virginia.gov/webmaps/DGMR/ Protererozoic is in light green on the left, Cambrian is in purple on the right. The imprint bearing rocks appear to be from the Proterozic Z meta-argillite sandstone. They were found about 400 feet from the contact. There the land slopes downhill towards the north-west. The rocks were unearthed while digging drainage ditches to protect a neighbor's cottage. Below a few inches of topsoil, the ground is weathered rocks of mixed sizes in a loose powder, all of the of the same uniform redish color. The rocks are easy to break. The strength and appearance is of soft fired pottery clay. The rocks were dumped by a grounds keeper digging the ditches, so I don't know exactly at what depth they were originally. It was less than four feet. The attachment is half an hour's collecting from the diggings dump. If they are of interest, and you are a university based invertebrate paleontologist, I would like to send you your choice at your university address. Perhaps one of your students would like to saw or fracture them. I won't expect any back, but I would like to hear about and see pictures of what is found. All were cleaned under running well water, with a soft hair brush. BTW, I'm an Astrophysics graduate student studying the Andromeda/M31 galaxy using the Green Bank radio telescope. The attached picture is of visiting school children and the telescope, which is about a kilometer beyond the children.
  24. Sold to me as Precambrian Algae?

    Hello all, this was sold to me as a chunk of precambrian algae from a reputable dealer. However, I'm having trouble finding photos of anything similar. Is that what it really is, and if so, is there any way to know roughly what kind it is and how old it is? The precambrian era is a pretty big block of time... The largest face of the fossil has bands of hollowed-out "combs" spaced about an inch or so apart. From the other sides, top, and bottom, it's clear that these bands go all the way through the fossil in three dimensions. There are some combs between the banding, but the large number of them in the bands is distinctive.
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