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Found 27 results

  1. predatory fish investigation

    Among the first things I ever posted here were miscellanous items on Saurichthys. Here's one more: bio.014720.full.pdf(about 1,8 Mb) The invisible fish: hydrodynamic constraints for predator-preyinteraction in fossil fish Saurichthys compared to recent actinopterygians Ilja Kogan1,2,*, Steffen Pacholak3,4,*, Martin Licht1,‡, Jö rg W. Schneider1,2, Christoph Brücker3 and Sebastian Brandt5 an outtake:
  2. Paleozoic selachians from the USA

    Johnson/2003Mitt.Mus.NaturkBerl., Geowiss. Reihe 6 (2003) 125-160 Nature of the beast (pun intended): taxonomical (systematic) Monograph " Dentitions of Barbclabomia (new genus, Chondrichthyes: Xenacanthiformes) from the Upper Palaeozoic of North America Gary D. Johnson' With 14 figures and 3 tables recommended, particularly for those interested in xenacanthids, orthacanthids, etc About 5 Mb Abstract Barbclabornia luedersensis (Berman, 1970) is defined on the basis of small (2 111117 high) isolated teeth that lack an intermediate cusp. It is known from the Lower Permian and possibly the Upper Pennsylvanian of North America. The two principal cusps are slightly curved orally, nearly parallel, and bear cristae mainly on their distal halves. They are cylindrical but become compressed proximally. The long axis of each cusp base is >45" to the labial margin of the tooth base. The base bears a prominent apical button in contact with the cusps; a central foramen is absent. Fewer than ten foramina occur on the aboral surface of the base, which bears a prominent concave basal tubercle. The shape of the base ranges from somewhat triangular to quadrangular. The cusps are composed of orthodentine covered by hypermineralized pallial dentine; the base is composed of orthodentine but may also contain trabecular dentine. Except for the possible occurrence of symphysial teeth, the dentition is homodont. Barbclabornia cf. B. luedersensis is stratigraphically highest in the known range of the genus and is restricted to the nearly lowermost part of the Clear Fork Group (Artinskian) of Texas. The teeth are similar to B. lztedersensis, but are more robust and have a quadrangular-shaped base. Barbclabornia was large, based on an undescribed palatoquadrate some 45 cm long. It was probably freshwater and is most closely related to Triodus. Key words: Chondrichthyans, Xenacanthiformes, Early Permian, North America.
  3. Death ray

    Giuseppe Marramà, Kerin M. Claeson, Giorgio Carnevale & Jürgen Kriwet(about 4 Mb) (2018) Revision of Eocene electric rays (Torpediniformes, Batomorphii) from the Bolca Konservat- Lagerstätte, Italy, reveals the first fossil embryo insitu in marine batoids and provides new insights into the origin of trophic novelties in coral reef fishes, Journal of Systematic Palaeontology, 16:14, 1189-1219, DOI: 10.1080/14772019.2017.1371257 Sensitive people should beware of figs. 15 and 16 I resisted the temptation (lover of classic photography) to work Man Ray in there somewhere
  4. Apart from a little gem by Belles-Isles (1987,Neues Jb/Abh,etc) gem, no studies were ever done on pteraspid swimming. Not visually over exuberant,but a VERY GOOD study, I believe. About 300 Kb, and from a while back, too. kermack23.full.pdf
  5. awesom 11,3 Mb I just received a postcard from my retinae:"enjoying the Bahamas,won't be back anytime soon,you &*&(((()_+&@W" "And you may tell yourself :"This is not my beautiful fossil""
  6. predatory fish,or?

    uniline (piranha-like pycnodont(Vullo et al/Nature,dec.2017,free access,large: about 18 Mb)
  7. After this horrendous attempt at a triple pun,things can only deteriorate,right? The list of species in the tags i have kept to a bare bones minimum,for clarity's sake i MIGHT not have posted this,but it figures tooth rows. Shark cognoscendi prolly already have this one(and the others by Bass)I'm sure. SO,no need to post those others orrep38a.pdf
  8. some pretty ugly fish

    eichsceripros Only for those with ichthylogical leanings.and/or those interested in mesozoic carbonates with a fine granulometry
  9. dipnoan ichnology

    FaNATU Horne016.pdf Given authors and source,eminently readable
  10. the cretaceous of Kansas

    KEBI nothing groundbreaking..lemon,basket,etc Squalicorax,Paranomotodon,Ischiyrhiza,Xiphactinus,the usual suspects,plus : paleoecology,diversity the mosa-and plesiosauridae are all indeterminate,which might disappoint some of you. Colour photography,BTW
  11. horsing around

    Hip While fig. 2 by itself would be worth the effort of opening this one(cute fish in hiding,and then some),this document also shows alcyonarian spicules,which ARE found in the fossil record. So it's not ONLY neontology.
  12. i was hooked when i saw this

    drawback for non francophones,though Palaeoliscus,Dicentrarchus about 10 MB
  13. osteology & more

    A Comprehensive overview that tells you some basic stuff ,recommended! I love puns,but I think this time I've hit a new low My experience is that some links are more volatile than others,so don't wait forever edit:its emphasis is strictly neontological ,so NO fossil fish !!!! edit 2: dentition gets short shrift in this one,so NO teeth
  14. Mesozoic ganoid scales

    From BdSPI: 2015 piscscutescaleosteodintegumGarbelTintor.pdf
  15. fish biogeography

    Good article and recent too wretmdispersal hypothesisbiogeogs.pdf
  16. the edestid way of life

    Taphonomy of a fascinating oddball........... Itano-piscselach2015-AbradedEdestus-final.pdf
  17. Pike's bite

    i will continue to post on predators,apex or not. Goulet_piscesocidbiomechan2016-Journal_of_Morphology.pdf
  18. shark vertebral column

    This might help a bit in answering questions about shark vertebrae:springerselachpiscevertebraosteologymetricsUSNMP-116_3496_1964.pdf
  19. Holocephali

    BIG,BIG! http://rstb.royalsocietypublishing.org/content/royptb/249/757/101.full.pdf Might be gone soon,so take advantage of this post
  20. shark preserve

    hope this ridiculously long link works for everyone: http://download.springer.com/static/pdf/31/art%3A10.1186%2Fs40851-016-0045-4.pdf?originUrl=http%3A%2F%2Fzoologicalletters.biomedcentral.com%2Farticle%2F10.1186%2Fs40851-016-0045-4&token2=exp=1475763733~acl=%2Fstatic%2Fpdf%2F31%2Fart%253A10.1186%252Fs40851-016-0045-4.pdf*~hmac=0548368773583ff066094ad67d755fbcf6f31c6f3d9f8b9590b477aa87cb3946
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