MARC record from Internet Archive

LEADER: 03123cam 2200361Ia 450
001 4519291
005 20071024124833.0
008 011105s2001 ilua b 000 0 eng d
035 $a(OCoLC)ocm48270390
040 $aIBT$cIBT$dAGL$dUIU
020 $c(pbk.)
070 0 $a500$bC432G no. 45
072 0 $aX400
072 0 $aL700
090 $aQE1$b.F4 n.s., no. 45$aQE 862.P37
049 $aUIUU$mNO
100 1 $aRieppel, Olivier.
245 14 $aThe cranial anatomy of Placochelys placodonta Jaekel, 1902, and a review of the Cyamodontoidea (Reptilia, Placodonta) /$cOlivier Rieppel --.
246 17 $aThe cranial anatomy of Placochelys placodonta
246 18 $aFieldiana: Geology, new series, no. 45
260 $aChicago, Ill. :$bField Museum of Natural History,$c2001.
300 $aiv, 104 p. :$b53 ill. ;$c26 cm.
440 0 $aFieldiana.$pGeology,$x0096-2651 ;$vnew ser., no. 45
490 1 $aPublication ;$v1514
500 $a"Accepted March 7, 2000. Published October 31, 2001."
504 $aIncludes bibliographical references (p. 95-101).
520 3 $aThe skull of Placochelys placodonta Jaekel is described in detail and compared with all other cyamodontoid skulls kept in public repositories. Cladistic analysis based on a character set derived from cyamodontoid skull anatomy results in a reconstruction of placodont interrelationships as follows: (Paraplacodus (Placodus ((Henodus, Cyamodus) (Macroplacus (Protenodontosaurus (Placochelys, Psephoderma)))))). The monophyly of the Cyamodontoidea is very robust, supported in particular by a suite of derived braincase characters. On the basis of present evidence, Henodus is the sister taxon of Cyamodus, and the monophyletic genus Cyamodus includes C. hildegardis. The monophyly of placochelyids, including Placochelys and Psephoderma, is strongly supported also. -- A detailed comparison of skull anatomy provides no basis for a hypothesis of close phylogenetic relationships of turtles and cyamodontoid placodonts. Any similarities between the two clades, particularly with respect to the development of extensive dermal armor, must be convergent. -- The historical paleobiogreography of cyamodontoid placodonts can be largely understood as a sequence of vicariance events that involved an early bifurcation establishing separate clades in the Germanic Basin and on the Eurasian carbonate platform. Subsequent vicariance established separate clades in the northern Alpine Triassic and in the southern Alps on the Hungarian platform, with further subdivision of th clades within the latter.
550 $aFieldiana series has been published as Geological Series by Field Columbian Museum (1895-1909) and Field Museum of Natural History (1909-1943), and as Fieldiana: Geology by Chicago Natural History Museum (1945-1966) and Field Museum of Natural History (1966-1978). Fieldiana Geology New Series No. 1 began June 29, 1979.
650 0 $aPlacochelys placodonta$vAnatomy.
650 0 $aPlacodontia$vClassification.
650 0 $aCyamodontoidea$vClassification.
830 0 $aPublication (Field Museum of Natural History) ;$v1514.
994 $a02$bUIU