Grahn,Y.

Author:
Grahn,Y.

Year:
1988

Title:
Chitinozoan stratigraphy in the Ashgil and Llandovery. (In: A Global Analysis of the Ordovician-Silurian Boundary. L.R.M.Cocks and R.B.Rickards, editors)

Reference:

Grahn,Y. (1988) Chitinozoan stratigraphy in the Ashgil and Llandovery. (In: A Global Analysis of the Ordovician-Silurian Boundary. L.R.M.Cocks and R.B.Rickards, editors) British Museum (Natural History) Geology, Bulletin Vol. 43 P. 317- 323

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Genus	Species	Country(Region)	From	To
Ancyrochitina	Ancyrochitina merga	USA(Mid-Continent)	Ashgillian
Ancyrochitina	Ancyrochitina spongiosa	Worldwide	Late Ashgillian	Early Llandoverian
Angochitina	Angochitina longicolla	Worldwide	Late Telychian
Angochitina	Angochitina longicolla	Sweden	Late Llandoverian
Armoricochitina	Armoricochitina nigerica	Worldwide	Late Caradocian	Hirnantian
Armoricochitina	Armoricochitina nigerica	Libya	Late Ashgillian
Armoricochitina	Armoricochitina nigerica	Europe	Middle Caradocian
Armoricochitina	Armoricochitina nigerica	Libya	Late Caradocian	Ashgillian
Calpichitina	Calpichitina lenticularis	Worldwide	Middle Caradocian	Hirnantian
Calpichitina	Calpichitina lenticularis	Libya	Middle Caradocian	Ashgillian
Calpichitina	Calpichitina lenticularis	Europe	Middle Caradocian
Conochitina	Conochitina armillata	Worldwide	Late Aeronian	Telychian
Conochitina	Conochitina armillata	Libya	Middle Aeronian	Middle Telychian
Conochitina	Conochitina armillata	Scandinavia	Middle Aeronian	Middle Telychian
Conochitina	Conochitina aspera	Worldwide	Late Hirnantian	Rhuddanian
Conochitina	Conochitina aspera	USSR(Moscow)	Early Llandoverian
Conochitina	Conochitina bulmani	Worldwide	Pushgillian	Rawtheyan