Full reference: G. J. Billberg. 1820. Enumeratio Insectorum in Museo Gust. Joh. Billberg 1-138
Parent taxon: Unicalcarida according to J. Heraty et al. 2011
See also Archibald and Rasnitsyn 2015 and Rasnitsyn and Zhang 2004
Sister taxa: Apocrita, Cephoidea, Cratoenigma, Orussoidea, Orussomorpha, Vespina, Xiphydrioidea
Subtaxa: Protosiricidae Pseudosiricidae Sinanxyela Sinosiricidae Siricidae
Type: Sirex
Ecology:
Distribution:
• Pliocene of Germany (1 collection)
• Miocene of Croatia (1), France (1)
• Oligocene of France (1), Germany (1)
• Eocene of Argentina (1), Canada (1: British Columbia), Germany (1), the Russian Federation (3), the United Kingdom (1), United States (2: Washington, Wyoming)
• Paleocene of France (3)
• Cretaceous of Brazil (2), China (3), the Russian Federation (1), the United Kingdom (1)
• Jurassic of Germany (9), Kazakhstan (4), Kyrgyzstan (1)
Total: 38 collections including 60 occurrences