Suborder:
|
Agoniatitina
|
Superfamily:
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Agoniatitoidea
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Family:
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Agoniatitidae
|
Genus:
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Agoniatites
|
Species:
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guangxiensis |
Qualifier:
|
sn |
Author:
|
Xu 1977,p.553
|
Lower Boundary:
|
LD4A--LD4B:G.grac.--Latanar. noeggerati, 401.6 million years
|
Upper Boundary:
|
mid.--up.varcus Zone [17,00], 389 million years
|