-
Chewtonian Yiyangian Bendigonian Moridunian Tulean Lancefieldian Tremadocian Tremadoc Migneintian Xinchangian Stairsian Cressagian Skullrockian Warendan...
-
radiation –
evidence from the
Rochdale Formation (middle
Early Ordovician,
Stairsian) in
eastern New York".
Geological Magazine. 145 (4): 490–520. Bibcode:2008GeoM...
- Karim,
Talia S.; Landing, Ed (2014). "Trilobite
biostratigraphy of the
Stairsian Stage (upper Tremadocian) of the
Ibexian Series,
Lower Ordovician, western...
-
extinction event known as the Mid-Tremadocian
Extinction Event or the Base
Stairsian M****
Extinction Event,
which is
particularly known to have
affected Baltican...
-
radiation –
evidence from the
Rochdale Formation (middle
Early Ordovician,
Stairsian) in
eastern New York".
Geological Magazine. 145 (4): 490–520. Bibcode:2008GeoM...
- ; Karim, T. S.; Landing, E. (2014). "Trilobite
biostratigraphy of the
Stairsian Stage (upper Tremadocian) of the
Ibexian Series,
Lower Ordovician, western...
-
Talia S. Karim; Ed
Landing (2014). "Trilobite
biostratigraphy of the
Stairsian Stage (upper Tremadocian) of the
Ibexian Series,
Lower Ordovician, western...
- S.
Karim (2019). "Revision of the
Early Ordovician (late Tremadocian;
Stairsian)
cheirurid trilobite Tesselacauda Ross, with
species from the
Great Basin...
- T. S. (2021). "Systematics of the
Early Ordovician (late Tremadocian;
Stairsian)
trilobite Gonioteloides Kobayashi, with
species from the
Great Basin...
