Edited by oilshale
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By oilshale (edited)
Perch
Kingdom: Animalia
Eon: Phanerozoic
Era: Cenozoic
Period: Neogene
Sub Period: None
Epoch: Pliocene
International Age: Piacenzian
Willershausen Formation
Collector: T. Bastelberger
Date Collected: 06/01/1969
Acquired by: Field Collection
Length: 21 cm
Clay pit Willershausen
Willershausen a. Harz
Lower Saxony
Germany
Taxonomy from Fossilworks.org.
Diagnosis from Gaudant 1997, p. 23 (translated from french by oilshale):"Perches that differ from the present species Perca fluviatilis L. by
their sagitta possessing a relatively massive rostrum with a rounded anterior end, by the composition of the posterior dorsal fin which has 11 to 13 lepidotriches, whereas Perca fluviatilis L. generally has 13 to 16, and finally by the smaller size of their scales, the number of which can be estimated at about 65 to 80 along the lateral line, whereas it is 60 to 70 in Perca fluviatilis L."
Identified by oilshale using Gaudant 1997.
References:
Weiler, W. (1933) Die Fischreste aus dem Oberpliocän von Willershausen. Arch. Hydrobiol. 25. p. 291-304.
Gaudant, Jean (1997): L'ichthyofaune pliocène de Willershausen am Harz (Basse Saxe, Allemagne) – un réexamen. Stuttgarter Beiträge zur Naturkunde / B; 1997, 51 p.10 pl., 24 fig.
Edited by oilshale
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