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Events of the Devonian Period

−420 —

–

−415 —

–

−410 —

–

−405 —

–

−400 —

–

−395 —

–

−390 —

–

−385 —

–

−380 —

–

−375 —

–

−370 —

–

−365 —

–

−360 —

–

−355 —

P
a
l
e
o
z
o
i
c

Silurian

D
e
v
o
n
i
a
n

Carboniferous

E
a
r
l
y

M
i
d
d
l
e

L
a
t
e

←

Rhynie chert^[1]

←

Hangenberg event; last placoderms disappear

←

Kellwasser event (Late Devonian extinction)^[2]

←

first vertebrates on land

←

most jawless fish disappear

←

Hunsrück fauna

Key events of the Devonian Period.
Axis scale: millions of years ago.

References

↑ Parry, S.F.; Noble S.R.; Crowley Q.G.; Wellman C.H. (2011). "A high-precision U–Pb age constraint on the Rhynie Chert Konservat-Lagerstätte: time scale and other implications". Journal of the Geological Society. 168 (4). London: Geological Society: 863–872. doi:10.1144/0016-76492010-043.
↑ Kaufmann, B.; Trapp, E.; Mezger, K. (2004). "The numerical age of the Upper Frasnian (Upper Devonian) Kellwasser horizons: A new U-Pb zircon date from Steinbruch Schmidt(Kellerwald, Germany)". The Journal of Geology. 112 (4): 495–501. Bibcode:2004JG....112..495K. doi:10.1086/421077.

[Parry-1] Parry, S.F.; Noble S.R.; Crowley Q.G.; Wellman C.H. (2011). "A high-precision U–Pb age constraint on the Rhynie Chert Konservat-Lagerstätte: time scale and other implications". Journal of the Geological Society. 168 (4). London: Geological Society: 863–872. doi:10.1144/0016-76492010-043.

[Kaufmann2004-2] Kaufmann, B.; Trapp, E.; Mezger, K. (2004). "The numerical age of the Upper Frasnian (Upper Devonian) Kellwasser horizons: A new U-Pb zircon date from Steinbruch Schmidt(Kellerwald, Germany)". The Journal of Geology. 112 (4): 495–501. Bibcode:2004JG....112..495K. doi:10.1086/421077.

[1]

[2]

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References