Eurypterus: Razlika med redakcijama

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Že po sedmih letih je zoolog James Ellsworth De Kay fosil opredelil kot [[členonožci|členonožca]].<ref name="waering">{{cite journal|author=Erik N. Kjellesvig-Waering|year=1958|title=The genera, species and subspecies of the family Eurypteridae, Burmeister, 1845|journal=Journal of Paleontology|volume=32|issue=6|pages=1107–1148 |publisher=The Paleontological Society|issn=0022-3360|accessdate= May 21, 2011}}</ref> Poimenoval ga je ''Eurypterus remipes'' in oblikoval rod ''Eurypterus''. Ime pomeni ''široko krilo'' oz. ''široko veslo''.
 
Ne glede na to, je De Kay mislil, da ''Eurypterus'' spada v skupino rakov. Leta 1898 je švedski paleontolog Gerhard Holm uspešno ločil fosile od kamnite posteljice. Tako je lahko opazoval skoraj popolnoma ohrajnene fragmente pod mikroskopom.
Večino fosilov so našli v državi New York v 19. stoletju. Še dandanes ostaja ''Eurypterus'' eden najbolj pogostih in najbolj poznanih [[eurypterid]]ov, saj predstavlja kar 95% vseh eurypteridskih fosilov.
 
 
==Opis==
 
Največji členonožci, ki so kdaj obstajali, so bili eurypteridi. Največji znan primerek (''[[Jaekelopterus rhenaniae]]'') je dosegel kar 2,5m v dolžino, torej nekako dolžino krokodila.<ref name="naturenews">{{cite web|url=http://www.nature.com/news/2007/071120/full/news.2007.272.html|title=Giant sea scorpion discovered|author=Daniel Cressey|publisher=Nature News|accessdate=May 22, 2011}}</ref> Vrste ''Eurypterus'', pa so bile precej manjše.
 
''Eurypterus remipes'' je dosegal velikost med 5 in 8cm, ''Eurypterus lacustris'' pa 6 do 9cm.<ref name="size">{{cite web|url=http://eurypterids.net/EurypteridMonth5.html|title=The size that common ''Eurypterus'' species attained (Late Silurian Bertie Group of New York and Ontario, Canada)|author=Samuel J. Ciurca, Jr.|publisher=Eurypterids.net|accessdate=May 22, 2011}}</ref> Največji primerek ''Eurypterus remipes'' je dosegel velikost 1,3m, trenutno pa je razstavljen v Paleontological Research Institution v [[New York]]u.<ref name="utexas">{{cite web|url=http://www.utexas.edu/tmm/npl/exhibits/eurypterus.html|title=''Eurypterus remipes'' NPL4415|publisher=Texas Natural Science Center: Non-vertebrate Paleontology, The Univeristy of Texas|accessdate=May 22, 2011}}</ref>
== References ==
 
==Vrste==
[[File:Eurypterus remipes 001.jpg|thumb|right|''Eurypterus remipes'' iz [[Staatliches Museum für Naturkunde Karlsruhe]], [[Nemčija]].]]
[[File:Eurypterus.jpg|thumb|right|''Eurypterus lacustris'' iz [[Muséum national d'histoire naturelle]], [[Francija]].]]
[[File:Eurypterus dekayi Exhibit Museum of Natural History.JPG|thumb|right|''Eurypterus dekayi'' z [[University of Michigan Exhibit Museum of Natural History]], [[ZDA]].]]
[[File:Eurypterus tetragonophthalmus - Amherst College Museum of Natural History.jpg|thumb|right|''Eurypterus tetragonophthalmus'' iz [[Amherst College Museum of Natural History]], [[ZDA]].]]<!--[[File:Eurypterids Schiele Museum.jpg|thumb|right|A fossil of a small ''[[Acutiramus cummingsi]]'' ('''left''') fossilized together with a specimen of ''[[Eurypterus remipes]]'' ('''right'''). From the [[Schiele Museum of Natural History]], [[North Carolina]].]]-->
 
 
*'''''Eurypterus''''' <small>De Kay, 1825</small>
 
:*?'''''Eurypterus cephalaspis''''' <small>Salter, 1856</small>
 
:*'''''Eurypterus dekayi'''''<small> Hall, 1859</small>
 
:*'''''Eurypterus flintstonensis'''''<small> Swartz, 1923</small>
 
:*'''''Eurypterus hankeni'''''<small> Tetlie, 2006</small>
 
:*'''''Eurypterus henningsmoeni''''' <small>Tetlie, 2002</small>
 
:*'''''Eurypterus laculatus'''''<small> Kjellesvig-Waering, 1958</small>
 
:*'''''Eurypterus lacustris''''' <small>Harlan, 1834</small>
 
:*'''''Eurypterus leopoldi''''' <small>Tetlie, 2006</small>
 
:*'''''Eurypterus megalops''''' <small>Clarke & Ruedemann, 1912</small>
 
:*?'''''Eurypterus minor''''' <small>Laurie, 1899</small>
 
:*'''''Eurypterus ornatus'''''<small> Leutze, 1958</small>
 
:*'''''Eurypterus pittsfordensis''''' <small>Sarle, 1903</small>
 
:*'''''Eurypterus quebecensis''''' <small>Kjellesvig-Waering, 1958</small>
 
:*'''''Eurypterus remipes'''''<small> DeKay, 1825</small>
 
:*'''''Eurypterus serratus''''' <small> (Jones & Woodward, 1888)</small>
 
:*'''''Eurypterus tetragonophthalmus''''' <small>Fischer, 1839</small>
 
==Filogenija==
Rod ''Eurypterus'' izvira iz ''Eurypterus minor'', najstarejšega znanega primerka, predvideva pa se, da izvira iz ''Dolichopterus macrocheirus''. Filogenijsko drevo se naslanja na delo O. Erik Tetliea iz 2006. Nekatere vrste niso prikazane:
 
 
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|label1=&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
|1=[[Dolichopteridae]]
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|2={{Clade
|label1=&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
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|label1=&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
|1=''Eurypterus hankeni''
|label2=&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
|2=''Eurypterus ornatus''
|label3=&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
|3=''Eurypterus dekayi''
|label4=&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
|4=''Eurypterus laculatus''
|label5=&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
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|1=''Eurypterus pittsfordensis''
|label2=&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
|2=''Eurypterus leopoldi''
|label3=&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
|3=''Eurypterus serratus''
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|2={{Clade
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|1={{Clade
|label1=&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
|1=''Eurypterus remipes''
|label2=&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
|2=''Eurypterus lacustris''
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|label2=&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
|2={{Clade
|label1=&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
|1=''Eurypterus henningsmoeni''
|label2=&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
|2=''Eurypterus tetragonophthalmus''
}}}}}}}}}}}}}}
 
 
 
== Reference ==
{{reflist|30em}}
<!--NOTE: Old reference. Unknown placement in-text:* Parker, Steve. Dinosaurus: the complete guide to dinosaurs. Firefly Books Inc, 2003. Pg. 51-->
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