Fig. 2From: Fluctuations of the oxygen minimum zone at the end of Oceanic Anoxic Event 2 in the Gulf of Mexico and the response of ammonitesMap of the Turonian world with occurrences of the ammonite Pseudaspidoceras flexuosum, shown in the lower right (scale 10 cm). The location of Vallecillo and the occurrence of this species in Texas are marked by larger dots because this seems to have been its main occurrence with the longest record. Map based on 95 Ma map of Blakey (2012), modified after Ifrim (2013)Back to article page