Pontian, in stratigraphy  the uppermost Miocene  Paratethys  stage, 
coeval  with the Messinian  Pontian Greeks , a group of ethnic Greek who
Kaynak: PontianEven aged timber management is a group of forest management  practices employed to achieve a nearly 
coeval cohort group  of forest  tree s
Kaynak: Even-aged timber managementIn astronomy , an open cluster family is a group of approximately 
coeval  (age range sim 30 Myr ) young open star clusters  located in a
Kaynak: Open cluster familyIn New Zealand , the Opoitian  starts at roughly the same time and the Blancan is further wikt:
coeval | 
coeval  with the Waipipian  and
Kaynak: BlancanThe Supai Group is 
coeval with the Hermosa Group  of east and south Utah; the Hermosa Group extended southeastwards from Utah to Durango
Kaynak: Supai GroupThe 
coeval  sandstone geologic unit from eastern Utah is the Cedar Mesa Sandstone - Isis Temple and Hermosa Group, Utah: In Grand Canyon, Isis
Kaynak: Esplanade SandstoneThe Cenomanian is 
coeval with the Woodbinian  of the regional timescale of the Mexican Gulf and the Eaglefordian  of the regional timescale
Kaynak: CenomanianThe Lower Triassic series is 
coeval with the Scythian  stage, which is today not included in the official timescales but can be found in
Kaynak: Early TriassicGymnitidae in the Pinacocerataceae  as the earlier and more primitive of its two families, combining Gymnites with 
coeval and more advanced forms.
Kaynak: GymnitidaeBoth the Pilbara and Kaapvaal cratons show extensional fault s which were active about the same time during felsic  volcanism and 
coevalKaynak: Vaalbara304-329), or Former Zhao, or Northern Han (北漢), was a Southern Xiongnu  state  during Sixteen Kingdoms  period 
coeval with the Chinese Jin
Kaynak: Han ZhaoThe Piacenzian is roughly 
coeval  with the European Land Mammal Mega Zone  MN 16, overlaps the late Chapadmalalan  and early Uquian  South
Kaynak: PiacenzianThe Vākāṭakas, like many 
coeval dynasties of the Deccan, claimed Buddhist  origin.  Little is known about Vindhyaśakti (c.  250–270 CE), the
Kaynak: Vakataka dynastyThe Ladinian is 
coeval with the Falangian  Chinese  regional stage. Stratigraphic definitions: The Ladinian was established by Austrian
Kaynak: Ladinianwhere he says, "I conceive that Ideas in the Understanding, are 
coeval with Sensation; which is such an Impression or Motion, made in
Kaynak: SensibilityThe Olenekian is roughly 
coeval with the regional Yongningzhenian  stage used in China . Stratigraphic definitions: The Olenekian stage was
Kaynak: OlenekianThe Pliensbachian is roughly 
coeval with the Charmouthian  regional stage of North America . Stratigraphic definitions: The Pliensbachian
Kaynak: Pliensbachian