Andrew Flynn
@flynnpaleo.bsky.social
Paleobotany | Paleoclimate | Paleomagnetism | Focused mostly on the Late Cretaceous through early Paleogene in western North America
Assistant Professor in Department of Geological Sciences at New Mexico State University
https://www.andrewgflynn.com/
Assistant Professor in Department of Geological Sciences at New Mexico State University
https://www.andrewgflynn.com/
This work not have been possible without the generous support of NSF-EAR, @acs.org PRF, Bureau of Land Management, and @baylor.bsky.social
October 23, 2025 at 6:10 PM
This work not have been possible without the generous support of NSF-EAR, @acs.org PRF, Bureau of Land Management, and @baylor.bsky.social
This has been truly collaborative study. I am grateful to @stevebrusatte.bsky.social, @danpeppe.bsky.social, Matt Heizler for co-leading this study, to all my co-authors for their hard work, and @nataliajagielska.bsky.social for her awesome artwork.
October 23, 2025 at 6:10 PM
This has been truly collaborative study. I am grateful to @stevebrusatte.bsky.social, @danpeppe.bsky.social, Matt Heizler for co-leading this study, to all my co-authors for their hard work, and @nataliajagielska.bsky.social for her awesome artwork.
Lastly, this N-S bioprovincialism persists after the mass extinction and is seen in early Paleocene mammalian communities suggesting that the biogeographic structure was not destroyed by the mass extinction event.
October 23, 2025 at 6:10 PM
Lastly, this N-S bioprovincialism persists after the mass extinction and is seen in early Paleocene mammalian communities suggesting that the biogeographic structure was not destroyed by the mass extinction event.
We then used ecological modeling to show dinosaur communities were partitioned into two different bioprovinces during the terminal Cretaceous across western North America, driven by differences in climate. This suggests dinosaurs in North America diverse & thriving leading up to the K/Pg boundary.
October 23, 2025 at 6:10 PM
We then used ecological modeling to show dinosaur communities were partitioned into two different bioprovinces during the terminal Cretaceous across western North America, driven by differences in climate. This suggests dinosaurs in North America diverse & thriving leading up to the K/Pg boundary.
This Naashoibito dinosaur community was dominated by the giant sauropod Alamosaurus and crested Lambeosaurine hadrosaurs, which is a marked difference than the coeval Hell Creek Formation.
October 23, 2025 at 6:10 PM
This Naashoibito dinosaur community was dominated by the giant sauropod Alamosaurus and crested Lambeosaurine hadrosaurs, which is a marked difference than the coeval Hell Creek Formation.
Using magnetostratigraphy and Ar/Ar geochronology, we were able to constrain the age of Naashoibito Member deposition, and the major vertebrate fossil localities, to no older than 66.38 Mya.
October 23, 2025 at 6:10 PM
Using magnetostratigraphy and Ar/Ar geochronology, we were able to constrain the age of Naashoibito Member deposition, and the major vertebrate fossil localities, to no older than 66.38 Mya.
Looking for a graduate program in paleobotany, paleoclimatology, and/or terrestiral sedimentology? Attending #GSA2025 next week? Please reach out so we can chat!
Recruiting MS students for Fall 2026 for projects focused on the late Cretaceous - early Paleogene of western North America.
Recruiting MS students for Fall 2026 for projects focused on the late Cretaceous - early Paleogene of western North America.
October 17, 2025 at 4:26 PM
Looking for a graduate program in paleobotany, paleoclimatology, and/or terrestiral sedimentology? Attending #GSA2025 next week? Please reach out so we can chat!
Recruiting MS students for Fall 2026 for projects focused on the late Cretaceous - early Paleogene of western North America.
Recruiting MS students for Fall 2026 for projects focused on the late Cretaceous - early Paleogene of western North America.
Rainy but productive day collecting Paleocene - Eocene fossil leaves out of the lower San Jose Formation in the San Juan Basin, New Mexico. Also found some super cool soft sediment deformation and sedimentary structures!
June 2, 2025 at 11:30 PM
Rainy but productive day collecting Paleocene - Eocene fossil leaves out of the lower San Jose Formation in the San Juan Basin, New Mexico. Also found some super cool soft sediment deformation and sedimentary structures!
Day two of collecting earliest Eocene plants from the lower San Jose Formation in the San Juan Basin. Found lots of legumes including some attached!
May 30, 2025 at 11:19 PM
Day two of collecting earliest Eocene plants from the lower San Jose Formation in the San Juan Basin. Found lots of legumes including some attached!
Successful day collecting earliest Eocene fossil plants from the lower San Jose Formation in the San Juan Basin, New Mexico!
May 30, 2025 at 1:08 AM
Successful day collecting earliest Eocene fossil plants from the lower San Jose Formation in the San Juan Basin, New Mexico!