ammonites

Neichiashanian epoch

General information
Lower boundary: equal to 460.9 Ma (based on Sandbian)
Upper boundary: equal to 449.5 Ma (based on Caradoc)
Continent: Asia
See collections within this interval
See map of collections within this interval
Key correlations
Period: Ordovician
Epoch: Late/Upper Ordovician
10 million year bin: Ordovician 4
Contained within
  • Ordovician
  • Paleozoic
  • Phanerozoic
    • Previous intervals
  • Middle Ordovician
  • Llanvirn
  • Early/Lower Llandeilo
  • Late/Upper Llanvirn
  • Dobrotiva
  • Uhaku
  • Lasnamagi
  • Aseri
  • Whiterock
  • Darriwilian
  • Llandeilian
  • Abereiddian
  • Oretanian
  • Llanvirnian
  • Yangtzi
  • Guniu
  • Hulo
  • Zhejiangian
  • Aluoja
  • Chazyan
  • Marmor
    • Next intervals
  • Ashgill
  • Cautleyan
  • Pusgillian
  • Kraluv Dvur
  • Pirgu
  • Richmond
  • Gamachian
  • Richmondian
  • Kralodvorian
  • Bolindian
  • Qiantianjiang
  • Wufeng
  • Chientangkiangian
  • Ashgillian
    • Equivalent to
  • Caradoc, Caradocian, Franklinian
    • Contains
  • Actonian, Ashbyan, Berounian, Blackriveran, Burrellian, Chatfieldian, Cheneyan, Edenian, Haljala, Hanjiang, Harnagian, Kirkfield, Kirkfieldian, Kukruse, Late/Upper Llandeilo, Longvillian, Marshbrookian, Middle Llandeilo, Mohawkian, Oandu, Rakvere, Rockland, Rocklandian, Shermanian, Soudleyan, Trentonian, Turinian, Vinice, Wildernessian, Woolstonian, Zahorany
    • Shares base with
  • Aijiashan, Aurelucian, Black River, Costonian, Dobrotivian, Gisbornian, Idavere, Keila, Late/Upper Ordovician, Letna, Liben, Sandbian, Shikou, Volfreyan, Xiaoxita, early Late Ordovician
    • Shares top with
  • Eastonian, Johvi, Llandeilo, Maysvillian, Nabala, Onnian, Streffordian
    • Overlaps with
  • Harju (452.0 to 443.7 Ma)
  • Vormsi (452.0 to 445.6 Ma)
  • Maysville (452.0 to 445.6 Ma)
  • Cincinnatian (452.5 to 443.7 Ma)
  • Rawtheyan (455.8 to 445.6 Ma)
  • middle Late Ordovician (455.8 to 445.6 Ma)
  • Katian (455.8 to 445.6 Ma)
  • Sherman (457.5 to 112.03 Ma)
  • Bohdalec (457.5 to 445.6 Ma)
  • Viru (463.5 to 452.0 Ma)
  • Chazy (466.0 to 457.5 Ma)
  • Whiterockian (471.8 to 457.5 Ma)
    • Appears in scales
  • Gradstein Ordovician Series of China (2004)
  • Webby 1998 Chinese Series (Chen et al. 1995) (1998)

    • Interval name: