• Green River Fossil
    Photographer: Dov Scher : Field Museum of Natural History
    (c) Field Museum of Natural History
    Description: Damselfly Zygoptera sp. Early Eocene (50 million years ago) Fossil Lake, Wyoming Geology Specimen # PE51414 Individual Green River fossil specimens.
  • Damselflies
    Photographer: John Weinstein : Field Museum of Natural History - Photography Division
    (c) Field Museum of Natural History
    Description: Damselflies (suborder Zygoptera) from the FBM 18-inch layer. Top left) Undescribed species of the family Coenagrionidae (the ?pond damselflies?) with body length of 39 millimeters (specimen number FMNH PE51414). From Locality A. Top right) Well-preserved wing of an undescribed transparent-winged species of Coenagrionidae, 27 millimeters long (specimen number FMNH PE51415). Bottom) Undescribed species of the family Calopterygidae (the ?demoiselles?) with a wing span of 60 millimeters (specimen number FOBU 448). From FBM Locality A.
Catalog Number: PE 51414
Taxonomic Name: Zygoptera
FM Catalog: Fossil Invertebrates
Phylum: Arthropoda
Class: Insecta
Order: Odonata
Period: Paleogene
Earliest Epoch: Eocene
Formation: Green River
Member: Fossil Butte
Coordinates Available?: No
Country: United States of America
State/Province/Territory: Wyoming
County: Lincoln
Township: Kemmerer
Collector: L. Grande
EMu IRN: 2250873
Occurrence ID: 8dd7dcfd-517e-4baa-a28d-f848bb8694fb

Disclaimer: Data and historical records associated with Field Museum's geological collections may contain language which is culturally sensitive owing to the colonial context of the Museum's history. We have specimens collected over the last 150 years, and from all over the world. Some records associated with these specimens may include offensive language. These records do not reflect the Field Museum's current viewpoint but rather the social attitudes and circumstances of the time period when these records were made.

We welcome feedback. We are continually working with our geological records to ensure the accuracy and appropriateness of these data. As we work to promote a greater understanding of the global heritage embodied by our collections, we actively seek consultation and will revise or remove information that is inaccurate or inappropriate. We encourage and welcome help from minorities and other people historically-underrepresented in museum communities, scholars, and others to improve the data in our geological records.