Palaeos		Palaeodictyopteroida
Arthropoda		Permothemistida

Palaeodictyopteroida: Permothemistida

PTERYGOTA
|--Ephemeroptera
|--Odonatoptera
|--NEOPTERA
|  
`--PALAEODICTYOPTEROIDA  
   |--Palaeodictyoptera
   `--+--Megasecoptera
       `--+--Permothemistida
          `--Diaphanopterodea

Taxa on This Page

1. Permothemistida

Permothemis libelluloides, fore wing (modified from Jeannel, 1949a)

This is a small order of insects known from fossils from the Permian of North America and Russia. The mesothorax was greatly developed, the fore wing had a well-developed pterostigma and few cross-veins, and the abdomen ended in a pair of long cerci. It has been compared with the Megasecoptera (Protodonata), but was more probably a two-winged development from the Palaeodictyoptera. It has left no recognizable descendants.

Descriptions

Permothemistida

Range: Permian

Phylogeny: Palaeodictyopteroida :: Palaeodictyoptera + (Megasecoptera + (Diaphanopterodea + * ))

References: E. F. Reik, 1970, "Fossil History", in Insects of Australia, Melbourne University Press, p.174