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The Structure of Lycophoria Lahusen. (Brachiopoda)

Published online by Cambridge University Press:  01 May 2009

J. K. S. St.Joseph—
J. K. S. St.Joseph—
Affiliation:
Sedgwick Museum, Cambridge.
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Extract

The sub-genus Lycophoria was founded by Lahusen (1886, p. 221), and referred to the Strophomenidae, the only species described, Lycophoria nucella (Dalman, 1828, p. 130) being the genotype. Part of the original diagnosis runs: “Klappen convex; Rückenklappe stärker gewölbt, am Stirnrande ein breiter flacher Sinus. In der Bauchklappe eine kleine dreiseitige Area mit dreieckiger offener Deltidialspalte. Schlosszähne von zwei divergirenden Zahnplatten gestützt, die in ihrer Fortsetzung am Grunde der Schale eine längliche, durch eine kurze Mittelleiste getheilte Muskelgrube umgrenzen. In der Rückenklappe ein starker, hakenförmiger Cruralfortsatz, innen durch eine Längsfurche getheilt und auf der Rückseite mit einem kleinen, zahnartigen Schlossfortsatz verbunden” (Lahusen, 1886, p. 221). Lycophoria has also been discussed by Hall and Clarke (1894, p. 230), by Kozlowski (1929, p. 131), who placed it with the Porambonitidae in the Telotremata, and by Schuchert and Cooper (1932, pp. 105–6), who regarded it as the sole representative of a new family of the Orthacea. The close external similarity to Porambonites and the fact that Lycophoria had also been referred to the Pentameracea, led the writer to investigate Lahusen's genus in a search for possible ancestors of the pentamerids.

Type
Original Articles
Information
Geological Magazine , Volume 76 , Issue 3 , March 1939 , pp. 130 - 136
Copyright
Copyright © Cambridge University Press 1939

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References

REFERNCES

Beecher, C. E., 1892. “Development of the Brachiopoda, Part II,” Amer. Journ. Sci. (3), xliv, 133–155, pl. i.CrossRefGoogle Scholar
DalMan, J. W., 1828. “Uppställning och Beskrifning af de i Sverige funne Terebratuliter,” K. Svenska Vetensk.-Akad. Handl., for 1827, 85–155, pls. i–vi.Google Scholar
Hall, J., and Clarke, J. M., 1894 (1893). Palaeontology of New York, viii, pt. 2, 230, pl. lxii, figs. 49–53.Google Scholar
Kozlowski, R., 1929. “Les Brachiopodes Gotlandiens de la Podolie Polonaise,” Palaeont. Polon., i, 131–2.Google Scholar
Lahusen, J., 1886. “Notiz über die inneren Merkmale einer neuen Untergattung der Strophomeniden,” Verh. russ.-kais. mineral. Gesell. (2), xxii, 219–222, pl. xiv.Google Scholar
St. Joseph, J. K. S., 1938. “The Pentameracea of the Oslo Region,” Norsk geol. Tidsskrift, xvii, 225–336.Google Scholar
Schuchert, C., and Cooper, G. A., 1932. “Brachiopod genera of the suborders Orthoidea and Pentameroidea,” Mem. Peabody Museum Nat. Hist., Yale, iv, pt. i, 105–106, pl. xiv.Google Scholar