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Found 27 results

  1. 322BF84E-6FF9-4D8B-837C-AEE85DC5479A.jpeg

    From the album Lower Devonian Helderberg Group in Eastern NY

    Hindia sphaeroidalis from the new Scotland formation
  2. The Jurassic of Europe

    PDF BIOSTRATIGRAPHIE DU JURASSIQUE OUEST-EUROPÉEN ET MÉDITERRANÉEN Zonations parallèles et distribution des invertébrés et microfossiles Elie CARIOU & Pierre HANTZPERGUE memoire 17 Elf exploration & Production @Coco @michele 1937 @fifbrindacier typologie:ouvrage synthetique,et:utile,probablement edit: pour probablement,lire: peut etre Useful stratigraphic information in this one edit 2: ca. 31 MB,alors:large
  3. PHYLUM SWITCH!!!a reassigment/revision

    SPONFLORA From animal to plant kingdom: the alleged sponge Siphonia bovista Geinitz from the Cretaceous of Saxony (Germany) in fact represents internal moulds of the cone-like plant fossil Dammarites albens Presl in Sternberg Birgit Niebuhr Bulletin of Geosciences 94(2), 221–234 (7 figures, 3 tables). size:about 14 Mb
  4. Middle Devonian Stromatoporoids

    These fossil stromatoporoids came from the Traverse formation, Potter formation, Bell Shale, and antrim/dundee formation locations near the north eastern tip of the Mitt in Michigan USA.
  5. calcareous sponge spicules

    I have read that finding spicules preserved in sponge is quite rare. I am finding sponge fossils with what I believe are spicules, but the fossils seem to be all calcium carbonate, no silica. this seems to me to show the original sponge body was aragonite or calcite based. This was found on the north eastern side of the tip of the Mitt in Michigan The area is considered Middle Devonian, but these were found on the shore of Lake Huron, so there is also the possibility that they are glacial transports. Comments welcome.
  6. Missouri marine fossil ID

    Hello, Thanks to all for identifying my first of three 'mystery' fossil finds in Jackson County, Missouri. This second item keeps appearing in the chert used for landscaping at a building several decades old. As before I've been unable to identify it by photos on the internet for comparison. Any idea what they may be? I didn't want to break one in half and disturb the integrity of the piece. Thanks again.
  7. Missouri marine fossil ID

    Hello, I live near west Jackson County, Missouri. I found this fossil while I was walking my dog. It was part of the landscaping for the front of a building that has been there for 20 years or more. No one knows the origin of the material for the landscaping. Lots of reading, I found most of the chert in the landscaping has crinoids as a point of the time period, Devonian? Can't find any photos to compare it with on the internet, been trying for 2 months, a crash course on paleontology 101. I see Missouri in a different light from it all. Can this be identified? Thanks for the opportunity to share.
  8. 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..
  9. Sponge on a stick...

    Hi again, Didn't think I should bother you guys with another sponge, but this is a bit peculiar and I can't find anything about sponges on sticks? This was found in the Kristianstad Basin, Cretaceous period. It is heavily erroded and mineralized, but probably a sponge. It seems to have a circular growth around what seems to be a stick of some sort. They seem proprotional, so I figure they grew together, but they might not be the same spieces? (the stick + the sponge). The images does not make the fossil justice, but it is a very voluminoes sponge with bulges that reminds of glass sponge. The stick is circular in the bottom and more flatt in the top. It might not have reached tremendous heights...? Questions: Would a sponge grow on a stick? Why would a sponge need to reach height if it is not drawing energy from sunlight? How would a sponge like this pump water? I can't find any "sucking holes" Shouldn't a sponge with sticks be more branching? More than one branch? All the best/ Linus
  10. Porifera indet.

    From the album Sponges, Kristianstad Basin

    Upper Campanian, Cretaceous I thought this was a Callopegma aucale, but now am unsure. (See discussion below) I've used this ref for identification ->LINK I've concluded from other sources that the area where this sponge was found - does indeed belong to the (lower) Upper Campanian. About 16cm at the base and 17.5cm at the diagonal.
  11. Help With Platteville Mystery Sponge

    I came across this unusual fossil on a recent collecting trip to Southwestern Wisconsin. It was attached to a hash plate containing mainly brachiopod fragments. It appears to be some type of sponge that I have never encountered before. It is roughly the size of a tennis ball with an opening at the top. There is also a smaller round opening on one side that might have been from predation. Any thoughts on what this might be?
  12. Hello, all! I'm working on an article presently about the existence of glass sponges in the Hamilton Group in New York state. The publications that I have found, most notably, The Great Glass-Sponge Colonies of the Devonian; Their Origin, Rise, and Disappearance, (Clarke, 1920)1 dispute their existence in the Hamilton group altogether. Recently, an example of an indet. Hexactinellida was presented to me from the site, and mention has been made of several others over the past 20 years having been found. I am wondering if anyone here in their vast array of experiences has encountered similar examples at the Penn Dixie site. If so, would you be willing to share photos and your information about where they were found? Thank you in advance! -J 1John M. Clarke, The Great Glass-Sponge Colonies of the Devonian; Their Origin, Rise, and Disappearance, 28 The Journal of Geology, 25-37 (1920)
  13. sponge reference

    Does anyone have access to this reference to help me ID Arizona Pennsylvanian sponges. Please PM me. Wewokella and other sponges from the Pennsylvanian Minturn Formation of north-central Colorado JK Rigby, SB Church Journal of Paleontology 67 (6), 909-916 Thanks, John
  14. Arizona Sponge

    I found a sponge in the Pennsylvanian Naco Formation north of Payson, Arizona. It may be the same species as an earlier find although instead of pancake form it is a conical form: http://www.thefossilforum.com/index.php?/topic/82186-knocking-about-the-naco-pennsylvanian-sponges-and-corals/&tab=comments#comment-871386 The first photo is of the convex outer surface. Part of top is broken off. Longest length of the sponge is 8cm. Any ideas as to identity? @Arizona Chris See photos in additional posts since I am doing this on a phone and cannot reduce file size.
  15. From the Great Limestone, Pendleian (Upper Mississippian) of County Durham, UK. One for @Spongy Joe and any other sponge experts out there. There appear to be no sponges (apart from Chaetetes) recorded from this well researched limestone but I've collected over thirty over the past few years. There are several different types, generally fossilised as broken fragments though these can be quite large (several inches across). This one is a curved sheet, like part of a vase or dish, about 10 - 15mm thick. The outer (convex) layer contains a good proportion of spicules showing five (and a few six) rays so could it be a heteractinid of some sort? The preservation is mostly calcite, perhaps original. Scale bar is 1cm long. Vertical section, showing disposition of tangential sections below. (specimen no. Sp. 13) Tangential section, cutting through outer surface on right and bottom (the orange layer, with smaller spicules than the internal ones). Closeups of tangential sections. Several five rayed spicules are visible along the edges (i.e. in the outer layer).
  16. part one cavaliersmithrslrstb20150476.pdf (less than 0,8 Mb) The name of the author, one of the big thinkers on the phylogenies of several phyla,was one of the things that attracted me to this piece part two:the response DufourMcIlroydiscussommerslcambrianeventexplosioediaca2017.pdf less than 1 Mb outtake: outtake from the response:
  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. Not settled yet

    I consider this important insofar as the various reasons for ,and processes involved in,marine invertebrate settlement are still being elucidated. uedanitrogenporiferasrep37546.pdf A must read for those with an interest in marine (paleo)-ecology Recommended for the deliciously informative fig.7 alone. 2,8 Mb,and it's from THAT journal
  19. what is this sponge

    Found it in Oligocene strata in Mississippi. Bay Springs, MS
  20. Spongebob Rex

    I posted once before on cladorhizids. A single image this time. Note scale and to show the difference between a dredged and an in-place Chondrocladia
  21. odd looking sponge

    A carnivorous sponge. "Spongezilla" came to my mind. chonporifbathymel 2012.pdf
  22. I need to identify this sponge. Waccamaw fm., Pliocene from Brunswick County, North Carolina Thats all I have to go on. If you know this species/genus or know someone who might I would appreciate it. Regards, Jim Wyatt Houston, Texas
  23. Jurassic sponge

    Cracov is full of Jurassic sponges in the walls. Can you tell more about this one? Could it be a sphinctozoan?
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