Related Subjects

Mass extinctions and sea-level changes

Author(s): Hallam A, Wignall PB


Review of sea-level changes during the big five mass extinctions and several lesser extinction events reveals that the majority coincide with large eustatic inflexions. The degree of certainty with which these eustatic oscillations are known varies considerably. Thus, the late Ordovician and end Cretaceous extinctions are associated with unequivocal, major regressions demonstrated from numerous, widespread regions. In contrast, the multiple, high frequency sea-level changes reported for the Frasnian–Famennian crisis (based on the supposed depth-preferences of conodont taxa) have little support from sequence stratigraphic analyses, which reveals the interval to be one of highstand. The end Permian mass extinction has long been related to a severe, first order lowstand of sea level [Newell, N.D., 1967. Revolutions in the history of life.

Similar Articles

Lethaia 28: 187-188

Author(s): Purnell MA (1995A) Large eyes and vision in conodonts

Conodonts and the first vertebrates

Author(s): Purnell MA, Aldridge RJ, Donoghue PCJ, Gabbott SE

Conodont anatomy, chordate phylogeny and vertebrate classification

Author(s): Donoghue PCJ, Purnell MA, Aldridge RJ

Hagfish predatory and slime defense mechanism

Author(s): Zintzen V, Roberts CD, Anderson NJ, Stewart AL, Struthers CD, et al.

A lamprey from the devonian period of South Africa

Author(s): Gess RW, Coates MI, Rubidge BS

The conodont animal

Author(s): Briggs DEG, Clarkson ENK, Aldridge RJ

A lamprey from the Cretaceous Jehol biota of China

Author(s): Chang M, Zhang J, Miao D

Lamprey metamorphosis

Author(s): Manzon RG, Youson JH, Holmes JA