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File:Protorosaurus Speneri.jpg

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Description
English: Historical drawing of incomplete fossil skeleton of Protorosaurus speneri (complete left forelimb, proximal right forelimb, pectoral girdle, vertebral column of the trunk region, pelvic elements, ribs, and gastrals – lateral view), an early archosauromorph reptile, from the Upper Permian of Central and Western Europe. The specimen shown in the drawing is the so-called Freiberg specimen (Freiberger Exemplar, FG 2666a/2004), recovered from the Copper Shale (Kupferschiefer) of Heidelberg near Schweina at the rim of the Thuringian Forest in the mid-19th century.[1]
Original figure caption and notes accompanied with this drawing read as follows (Nicholson, 1876):[2] “Fig. 138. – Protorosaurus Speneri, Middle Permian, Thuringia, reduced in size. (After Von Meyer.) [copied from Dana].
The type-species of the genus Protorosaurus is the P. Speneri (fig. 138) of the “Kupfer-schiefer” of Thuringia, but other allied species have been detected in the Middle Permian of Germany and the north of England. This Reptile attained a length of from three to four feet; and it has been generally referred to the group of the Lizards (Lacertilia), to which it is most nearly allied in its general structure, at the same time that it differs from all existing members of this group in the fact that its numerous conical and pointed teeth were implanted in distinct sockets in the jaws – this being a Crocodilian character. In other respects, however, Protorosaurus approximates closely to the living Monitors (Varanidæ); and the fact that the bodies of the vertebræ are slightly cupped or hollowed out at the ends would lead to the belief that the animal was aquatic in its habits. At the same time, the structure of the hind-limbs and their bony supports proves clearly that it must have also possessed the power of progression upon the land.”
Deutsch: Historische Zeichnung fossiler Skelettreste von Protorosaurus speneri (vollständiges linkes Vorderbein, proximaler Teil des rechten Vorderbeins, Schultergürtel, Rumpfwirbelsäule, Elemente des Beckengürtels, Rippen und Gastralia – in lateraler Ansicht), eines frühen Vertreters der Archosauromorpha, aus dem Oberperm von Mittel- und Westeuropa. Bei dem in der Abbildung gezeigten Stück handelt es sich um das sogenannte Freiberger Exemplar (FG 2666a/2004), das Mitte des 19. Jahrhunderts aus dem Kupferschiefer von Heidelberg bei Schweina am Thüringer Wald geborgen wurde.[1]
Español: Dibujo del esqueleto incompleto de un Protorosaurus speneri, tal como fue encontrado.
Date
Source HTML version of Nicholson (1876)[2] at gutenberg.org
Author James D. Dana (1863, redrawn from von Meyer, 1856),[3][4] reproduced by Nicholson (1876)[2]

References

  1. ↑ a b Annalisa Gottmann-Quesada, P. Martin Sander (2009): A redescription of the early archosauromorph Protorosaurus speneri MEYER, 1832, and its phylogenetic relationships. Palaeontographica Abteilung A: Paläozoologie, Stratigraphie. 287(4-6):123-221.
  2. ↑ a b c H. Alleyne Nicholson (1876): The ancient life-history of the earth. A comprehensive outline of the principles and leading facts of palæontological science. The Werner Company, Akron, OH, p. 205 (fig. 138) therein (BHL).
  3. ↑ James Dwight Dana (1863): Manual of Geology: Treating of the Principles of the Science with Special Reference to American Geological History, for the Use of Colleges, Academies, and Schools of Science. Theodore Bliss & Co., Philadelphia, PA, p. 376 (fig. 617 A) therein (Hathitrust).
  4. ↑ Hermann von Meyer (1856): Zur Fauna der Vorwelt. Saurier aus dem Kupferschiefer der Zechstein-Formation. Verlag von Heinrich Keller, Frankfurt am Main, pl. II fig. 1 therein.

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current16:48, 30 July 2008Thumbnail for version as of 16:48, 30 July 2008546 × 608 (100 KB)FunkMonk== Summary == {{Information |Description=Fig. 138.—Protorosaurus Speneri, Middle Permian, Thuringia, reduced in size. (After Von Meyer.) [][21] The type-species of the genus Protorusaurus is the P. Speneri(fig. 138) of the "Kupfer-schiefer" of Thuringia

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