Serrodiscus Richter and Richter 1941.[1] is a genus of Eodiscinid trilobite belonging to the family Weymouthiidae Kobayashi T. (1943),[2] Order Agnostida (Salter 1864).[3] It lived during the late Lower Cambrian, with remains found in Canada (Newfoundland & Nova Scotia), China (Gansu), The United Kingdom (England), Germany (Silesia), Poland (Holy Cross Mountains), the Russian Federation (Tuva, Gorno-Altayskaya, Kuznetsk Alatau), and the United States (Massachusetts, New York State).[4] It is named for the spines on the ventral side of the pygidium, which give it a serrated impression.
Fletcher & Theokritoff (2008) [5] designated Shaw’s (1950, pl. 79, fig. 24) [6] specimen of “Weymouthia nobilis (Ford, 1872)” [7] as the holotype of a new species, Serrodiscus weymouthioides, and considered Runcinodiscus Rushton (in Bassett et al., 1976) [8] [= ?Weymouthia nobilis (Ford, 1872)] to be a junior synonym of Serrodiscus. Weymouthia and Runcinodiscus had previously been viewed as closely allied with Serrodiscus (e.g. Rushton op. cit., 1976).
^RICHTER, R., & RICHTER, E., 1941. Die Fauna des Unter-Kambriums von Cala in Andalusien. Abhandlungen der senckenbergischen naturforschenden Gesellschaft, 455: 90 pp., 83 figs., 4 pls., Frankfurt.
^KOBAYASHI T. 1943. Brief notes on the Eodiscids 1, their classification with a description of a new species and a new variety, Proceedings of the Imperial Academy, Tokyo, Volume 19, pp. 37-42.
^SALTER, J. W. 1864: On some new fossils from the Lingula-flags of Wales. Quarterly Journal of the Geological Society of London, 20, 233–241.
^Cite error: The named reference Treatise was invoked but never defined (see the help page).
^FLETCHER, T. P. & THEOKRITOFF, G., 2008. The Early Cambrian of eastern Massachusetts. Northeastern Geology and Environmental Science,30, 301-329.
^SHAW, A. B., 1950. A revision of several Early Cambrian trilobites from eastern Massachusetts. Journal of Paleontology, 24, 577-590.
^FORD, S. W., 1872. Descriptions of some new species of primordial fossils. American Journal of Science, Series 3, 3, 419-422.
^BASSETT, M. G., OWENS, R. M & RUSHTON, A. W. A., 1976. Lower Cambrian fossils from the Hell’s Mouth Grits, St. Tudwal’s Peninsula, North Wales. Journal of Geological Society of London, 132, 623-644.
of Serrodiscus. Weymouthia and Runcinodiscus had previously been viewed as closely allied with Serrodiscus (e.g. Rushton op. cit., 1976). Serrodiscus serratus...
Limniphacos perspiculum occurs together with Mesolenellus hyperborea, Serrodiscus, hyoliths, Petrianna fulmenta (Bradoriida), and inarticulate brachiopods...
junior synonym of Serrodiscus; Rushton (1976) had previously regarded Weymouthia and Runcinodiscus as closely allied with Serrodiscus. Weymouthia nobilis...
is known, and it may well be that it would be better to include it in Serrodiscus.[according to whom?] Like all Agnostida, Semadiscus is diminutive. Like...
thorax consists of three rings when known (Mallagnostus, Marocconus, Serrodiscus, Tannudiscus and Weymouthia). The pygidial axis is long and strongly...
(Acidiscus, Acimetopus, Analox, Bathydiscus, Bolboparia, Leptochilodiscus, Serrodiscus), and Calodiscus. Like all Agnostida, Oodiscus is diminutive and the...
et al., op. cit. p. 631, pl.2, figs. 6 - 14; pl. 3 figs. 1 - 4), and Serrodiscus ctenoa? Rushton, 1966, collected from 16.5 m below the base of the overlying...
including (Acidiscus, Analox, Bathydiscus, Bolboparia, Leptochilodiscus, Serrodiscus), Calodiscus, and several species of Olenellus Billings, 1861, and Bonnia...
Mesolenellus hyperborea occurs together with Limniphacos perspiculum, Serrodiscus, hyoliths, Petrianna fulmenta (Bradoriida), and inarticulate brachiopods...
1997), Rushton (1966, p. 12) noted that, “Acidiscus Rasetti differs from Serrodiscus but slightly”, although several of the characteristics in the former...
Weymouthiidae (Acidiscus, Acimetopus, Analox, Bolboparia, Leptochilodiscus, Serrodiscus), Calodiscus, several species of Olenellus and Bonnia (Dorypygidae)....
Weymouthiidae (Acidiscus, Acimetopus, Bathydiscus, Bolboparia, Leptochilodiscus, Serrodiscus), Calodiscus, several species of Olenellus and Bonnia (Dorypygidae)....
Global Information