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Broader Terms:
   Elasmobranchii (cartilaginous fishes) 

More Specific:
   Pliotrema warreni (sixgill sawshark) 
   Pristiophoridae (saw sharks) 
   Pristiophorus cirratus (Little sawshark) 
   Pristiophorus japonicus (Japanese sawshark) 
   Pristiophorus nudipinnis (Sawshark) 
   Pristiophorus schroederi (Corvina) 
Latest Articles on Pristiophoriformes from uBioRSS
Weird and mysterious: scientists find new shark species - CBD News Headlines
Phylogenetic relationships amongst Chloromyxum Mingazzini, 1890 (Myxozoa: M... - ScienceDirect Search: "n sp"

External Resources:

Common Names: saw sharks, Sägehaie, Zaaghaaien, Sawsharks

1.  Revision of the sixgill sawsharks, genus Pliotrema (Chondrichthyes, Pristiophoriformes), with descriptions of two new species and a redescription of P. warreni Regan.LinkIT
Weigmann S, Gon O, Leeney RH, Barrowclift E, Berggren P, Jiddawi N, Temple AJ
PloS one, 2020

2.  Evolutionary trajectories of tooth histology patterns in modern sharks (Chondrichthyes, Elasmobranchii).LinkIT
Jambura PL, Türtscher J, Kindlimann R, Metscher B, Pfaff C, Stumpf S, Weber GW, Kriwet J
Journal of anatomy J. Anat. Evolutionary trajectories of tooth histology patterns in modern sharks (Chondrichthyes, Elasmobranchii). 10.1111/joa.13145 During their evolutionary history, modern sharks developed different tooth mineralization patterns that resulted in very distinct histological patterns of the tooth crown (histotypes). To date, three different tooth histotypes have been distinguished: (i) orthodont teeth, which have a central hollow pulp cavity in the crown, encapsulated by a prominent layer of dentine (orthodentine); (ii) pseudoosteodont teeth, which have their pulp cavities secondarily replaced by a dentinal core of porous dentine (osteodentine), encased by orthodentine; and (iii) osteodont teeth, which lack orthodentine and the whole tooth crown of which consists of osteodentine. The aim of the present study was to trace evolutionary trends of tooth mineralization patterns in modern sharks and to find evidence for the presence of phylogenetic or functional signals. High resolution micro-computed tomography images were generated for the teeth of members of all nine extant shark orders and the putative stem group ?Synechodontiformes, represented here by three taxa, to examine the tooth histology non-destructively. Pseudoosteodonty is the predominant state among modern sharks and represents unambiguously the plesiomorphic condition. Orthodonty evolved several times independently in modern sharks, while the osteodont tooth histotype is only developed in lamniform sharks. The two shark orders Heterodontiformes and Pristiophoriformes showed highly modified tooth histologies, with Pristiophorus exhibiting a histology only known from batomorphs (i.e. rays and skates), and Heterodontus showing a histological difference between anterior and posterior teeth, indicating a link between its tooth morphology, histology and durophagous lifestyle. The tooth histotype concept has proven to be a useful tool to reflect links between histology, function and its taxonomic value for distinct taxa; however, a high degree of variation, especially in the pseudoosteodont tooth histotype, demonstrates that the current histotype concept is too simplistic to fully resolve these relationships. The vascularization pattern of the dentine might offer new future research pathways for better understanding functional and phylogenetic signals in the tooth histology of modern sharks. © 2019 The Authors. Journal of Anatomy published by John Wiley & Sons Ltd on behalf of Anatomical Society. Jambura Patrick L PL Department of Palaeontology, University of Vienna, Vienna, Austria. Türtscher Julia J Department of Palaeontology, University of Vienna, Vienna, Austria. Kindlimann René R Haimuseum und Sammlung R. Kindlimann, Aathal-Seegräben, Switzerland. Metscher Brian B Department of Theoretical Biology, University of Vienna, Vienna, Austria. Pfaff Cathrin C Department of Palaeontology, University of Vienna, Vienna, Austria. Stumpf Sebastian S Department of Palaeontology, University of Vienna, Vienna, Austria. Weber Gerhard W GW Department of Evolutionary Anthropology, University of Vienna, Vienna, Austria. Core Facility for Micro-Computed Tomography, University of Vienna, Vienna, Austria. Kriwet Jürgen J Department of Palaeontology, University of Vienna, Vienna, Austria. eng Journal Article 2019 12 22 England J Anat 0137162 0021-8782 IM dentition histotype micro-computed tomography teeth tooth histology 2019 11 28 2019 12 24 6 0 2019 12 24 6 0 2019 12 24 6 0 aheadofprint 31867732 10.1111/joa.13145 References, 2019</i></font><br><font color=#008000><br></font></span><br>3.  <a href= class=title>Clasper Morphology of the Japanese Sawshark, Pristiophorus japonicus Günther, 1870 (Chondrichthyes: Elasmobranchii).</a><a href=><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>Moreira RA, de Carvalho MR<br><font color=gray><i>Anatomical record (Hoboken, N.J. : 2007), 2019</i></font><br><font color=#008000><br></font></span><br>4.  <a href= class=title>The description of two new species of Chloromyxum from skates in the Argentine Sea reveals that a limited geographic host distribution causes phylogenetic lineage separation of myxozoans in Chondrichthyes.</a><a href=><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>Cantatore DMP, Irigoitia MM, Holzer AS, Barto?ová-Sojková P, Pecková H, Fiala I, Timi JT<br><font color=gray><i>Parasite (Paris, France), 2018</i></font><br><font color=#008000><br></font></span><br>5.  <a href= class=title>Shark tales: a molecular species-level phylogeny of sharks (Selachimorpha, Chondrichthyes).</a><a href=><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>Vélez-Zuazo X, Agnarsson I<br><font color=gray><i>Molecular phylogenetics and evolution, 2011</i></font><br><font color=#008000><br></font></span><br>6.  <a href= class=title>Three new genera and species of tapeworms from the longnose sawshark, Pristiophorus cirratus, with comments on their modes of attachment to the spiral intestine.</a><a href=><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>McKenzie VJ, Caira JN<br><font color=gray><i>The Journal of parasitology, 1998</i></font><br><font color=#008000><br></font></span><br></table></tr></table></td><script src="" type="text/javascript"> </script> <script type="text/javascript"> _uacct = "UA-634822-1"; urchinTracker(); </script> </BODY> </HTML>