Petrolestes inexpectatus

Taxonavigation

Taxonavigation: Cephalozygoptera

Superregnum: Eukaryota Cladus: Podiata Cladus: Amorphea Cladus: Obazoa Cladus: Opisthokonta Cladus: Holozoa Cladus: Filozoa Cladus: Choanozoa Regnum: Animalia Subregnum: Eumetazoa Cladus: ParaHoxozoa Cladus: Bilateria Cladus: Nephrozoa Cladus: Protostomia Superphylum: Ecdysozoa Cladus: Panarthropoda Phylum: Arthropoda Cladus: Mandibulata Cladus: Pancrustacea Cladus: Allotriocarida Subphylum: Hexapoda Classis: Insecta Cladus: Dicondylia Subclassis: Pterygota Superordo: Odonatoptera Ordo: Odonata Subordo: †Cephalozygoptera

Superfamilia: †"Sieblosioid Group"
Familia: †Dysagrionidae
Subfamilia: †Petrolestinae
Genus: †Petrolestes
Species: †Petrolestes inexpectatus

Name

• †Petrolestes inexpectatus Nel, 2024.

Type material

• Holotype: YPM IP.359116
  • Repository: Invertebrate Paleontology Collection, Yale Peabody Museum, New Haven, Connecticut, USA
    • Collected: 1923 by Junius Henderson and John Byram

Type locality

• Eocene, Ypresian (Bridgerian); Green River Formation, "Lake Uinta", Parachute Creek member; Gus’ pit, two miles west of Rio Blanco store, Rio Blanco County, Colorado, United States

Etymology

• "Named after the unexpected presence of a second species of Petrolestes in the Green River Formation"

Distribution

Eocene

• Ypresian (Bridgerian)
  • Green River Formation, "Lake Uinta", Parachute Creek Member; Gus’ pit, two miles west of Rio Blanco store, Rio Blanco County, Colorado, United States

References

• Cockerell, T.D.A. 1927. A new fossil dragonfly from the Eocene of Colorado. The Entomologist 60: 81-82. https://www.google.com/books/edition/The_Entomologist/KxATAAAAIAAJ?hl=en&gbpv=1&dq=%22A%20new%20fossil%20dragonfly%20from%20the%20Eocene%20of%20Colorado%22&pg=RA1-PA82&printsec=frontcover. 
• Garrouste R.; Nel A. 2015. New Eocene damselflies and first Cenozoic damsel-dragonfly of the isophlebiopteran lineage (Insecta: Odonata). Zootaxa 4028(3): 354–366. doi:10.11646/zootaxa.4028.3.2. PMID 26624314. 
• Zeiri A.; Nel A.; Garrouste R. 2015. A new libelluloid family from the Eocene Green River Formation (Colorado, USA) (Odonata, Anisoptera). Zootaxa 4032(3): 290–296. doi:10.11646/zootaxa.4032.3.4. PMID 26624363. 
• Archibald, S.B., Cannings, R.A., Erickson, R.J., Bybee, S.M. & Mathewes, R.W. 2021. The Cephalozygoptera, a new, extinct suborder of Odonata with new taxa from the early Eocene Okanagan Highlands, western North America. Zootaxa 4934(1): 1–133. DOI: 10.11646/zootaxa.4934.1.1 . Reference page. 
• Nel A. 2024. Two new damselflies from the Eocene Green River Formation (Odonata, Zygoptera, Dysagrionidae, Thaumatoneuridae). Zootaxa 5446(4): 588–594. doi:10.11646/zootaxa.5446.4.11. PMID 39645852. 
• Ware, J.L., Simonsen, T.J., Rasmussen, J.A. & Archibald, S.B. 2025. Systematics of the extinct suborder Cephalozygoptera (Odonata): a wing-based analysis comparing its genera with those of extant Zygoptera. American Museum Novitates 4043: 1–19. doi:10.1206/4043.1. ISSN 0003-0082.  [pdf] Reference page.