Ophiacodon (German Wikipedia)

Analysis of information sources in references of the Wikipedia article "Ophiacodon" in German language version.

refsWebsite

Global rank German rank

low place

low place

2,333^rd place

2,026^th place

low place

low place

osu.edu

kb.osu.edu

John J. Stephens, Ophiacodon aus Ohio (PDF; 1,0 MB)

palass.org

cdn.palass.org

Unterpermische Pelycosaurier aus den englischen Midlands (PDF; 1,6 MB)

paleofile.com

Liste der Pelycosauriertaxa