comment on this calibration

Anisoptera

Lineage (NCBI): root » Eukaryota » Opisthokonta » Metazoa » Eumetazoa » Bilateria » Coelomata » Protostomia » Ecdysozoa » Panarthropoda » Arthropoda » Mandibulata » Pancrustacea » Hexapoda » Insecta » Dicondylia » Pterygota <winged insects> » Palaeoptera » Odonata » Anisoptera/Anisozygoptera group » Anisoptera <dragonflies> » Aeshnoidea

calibration from:
Kohli, M.K., Ware, J.L., and Bechly, G. 2016. How to date a dragonfly: Fossil calibrations for odonates. Palaeontologia Electronica, 19.1.1FC.
[View electronic resource]

 node name
Anisoptera     Look for this name in NCBI   Wikipedia   Animal Diversity Web 		 
  recommended citations
http://palaeo-electronica.org/content/fc-8 Kohli et al., 2016 		 
  node minimum age
168 Ma
The Daohugou-Biota, resting on the Jiulongshan Formation, has been dated with SHRIMP U-Pb zircon age of 168-152 Ma, giving a minimum age for Jiulongshan Formation of 168 Ma (Liu et al., 2006). Because the Daohugou Formation overlies the Jiulonshan formation, he age range of the former provides a minimum age as 168 Ma for the calibrating fossil. 		 
  node maximum age
None specified 		 
 primary fossil used to date this node 
 

 
 tree image (click image for full size) 
tree image
Figure 3 from Kohli et al. (2016).
login