Palaeocoma is an extinct genus of brittle stars that lived during the Middle Triassic to Early Jurassic Periods. Its fossils have been found in Europe.Cyril Walker, David Ward Fossils : Smithsonian Handbook, (2002, paperback, revisited), (1992, 1st edition). Page 189.
Distribution The genus Palaeocoma was revised by Hess (1960, 1962) and is known from the Middle Triassic (Ladinian) to the Lower Jurassic (Toarcian) with occurrences reported from the United Kingdom, France, Luxembourg, Germany, Switzerland, Italy, and Serbia and Montenegro.
Type species Palaeocoma milleri (Phillips, 1829)Phillips J. (1829). Illustrations of the Geology of Yorkshire; or a description of the strata and organic remains of the Yorkshire Coast. Part 1. 192 pp. York. [= P. gaveyi and P. egertoni according to Jaselli (2015, p. 192)], an Early Jurassic (Sinemurian and Pliensbachian) species recorded from France, Germany, Luxembourg, the United Kingdom and Lombardy in Italy.Jaselli, L., 2015. The Lower Jurassic (Early Sinemurian) ophiuroid Palaeocoma milleri in the palaeontological collection of the Museo di Storia Naturale “Antonio Stoppani” (Italy). Bollettino della Società Paleontologica Italiana, 54 (3), 187-195. Modena.
Synonymised names Ophioderma carinata Wright, 1866 Ophioderma egertoni (Broderip, 1840) Ophioderma gaveyi Wright, 1854 Ophioderma milleri (Phillips, 1829) Ophiura egertoni Broderip, 1840 Ophiura milleri Phillips, 1829 Ophiurella milleri (Phillips, 1829) Palaeocoma egertoni (Broderip, 1840) Palaeocoma gaveyi (Wright, 1854)
Other species Palaeocoma escheri Herr, 1865Herr, O. (1865). Die Urwelt der Schweiz. 1. 622 pp. Schulthess, Zürich. [= Ophiura ventrocarinata Quenstedt 1876]Quenstedt, F. A. 1876. Petrefactenkunde Deutschlands: Erste Abtheilung, Vierter (4) Band, Echinodermen (Asteriden und Encriniden). 742 pp. Fues Verlag, Leipzig. was redescribed by Hess (1960) and recorded from the Lower Lias Staffelegg Formation,Reisdorf A. G., Wetzel, A., Schlatter, R., Jordan, P. 2011. The Staffelegg Formation: a new stratigraphic schemefor the Early Jurassic of northern Switzerland. Swiss J Geosci 104: 97 – 146. of Schambelen near Mülligen in the Canton of Aargau of northern Switzerland. It occurs in the Hettangian, the earliest age and lowest stage of the Jurassic period and, specifically, the Psiloceras planorbis Ammonite Zone. Palaeocoma raiblana (Toula, 1887).Toula, F. (1887). Über Aspidura raiblana nov. spec. Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften, 96, 361-369. This species has so far only been found in the Triassic Wengener Schichten Formation (Ladinian) of Budva in Serbia and Montenegro).
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