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Dan Peppe

@danpeppe.bsky.social
427 followers 250 following 28 posts

Paleobotanist, paleoclimatologist, & geologist. I study fossil plants, ancient climate, and the Earth's magnetic field. (he/him) Linking Earth’s Ancient Flora, Fauna, and Climate (LEAFF Climate) Lab sites.baylor.edu/daniel_peppe

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Dan Peppe @danpeppe.bsky.social · 01/12/2025
If you work on fragmentary fossil material, check out this method published in JoVE Journal developed by my PhD student, Dava Butler, and colleagues that can be used to stabilize & repair fossil material using archival Japanese paper and typical fossil prep resins: app.jove.com/v/68979/usin... 🧪🦴🦣
app.jove.com
Using Archival Japanese Paper and Thermoplastic Resins to Prepare Fossils for Storage, Display, Transport, and Radiography
Kozo washi is an archival-grade paper commonly used in the conservation of museum objects. This paper can be combined with widely used archival adhesives ...
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Alana Sharp @acsharp.bsky.social · 13/11/2025
Anyone interested in applying for PhDs at #2025SVP, email or find me or @tguillerme.bsky.social for a chat if you’re interested in morphological trait evolution with a conservation theme: 🔗 www.findaphd.com/phds/project...
findaphd.com
ACCE+ DLA Programme: Morphological Trait Evolution in Isolated Populations of Large Mammals and its Implications for Rewilding in the UK at University of Liverpool on FindAPhD.com
PhD Project - ACCE+ DLA Programme: Morphological Trait Evolution in Isolated Populations of Large Mammals and its Implications for Rewilding in the UK at University of Liverpool, listed on FindAPhD.co...
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Dan Peppe @danpeppe.bsky.social · 12/11/2025
My student, Evan Cerna presenting at #2025SVP on a new Cretaceous dinosaur trackway in the Glen Rose Formation in central Texas!
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Katharine Hayhoe @katharinehayhoe.com · 12/11/2025
I am on my way home to Toronto and the aurorae are absolutely phenomenal. If you are anywhere in the northern half of the continent, get outside and look up! Or better still, put your camera on a 10 second exposure and point it up.
Gorgeous red and green aurorae over a lighted city below.Gorgeous picture of red and green aurorae over a lighted city below.
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Dan Peppe @danpeppe.bsky.social · 12/11/2025
Smallest hints of the northern lights tonigjt in Waco, TX
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Daniel Swain @weatherwest.bsky.social · 30/10/2025
I wanted to offer some thoughts on the Gates climate memo that has been circulating this week. While I can't directly speak for others, I can say that my own response is one of dismay & deep frustration (and that this view is shared by many climate/Earth scientists). [1/n]
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Dr. Judith Hubbard @judithgeology.bsky.social · 01/11/2025
Sixty days left to save the Museum of the Earth. Please donate if you can, and share. This is not only one of the most important fossil collections in the world, it also home to the world’s best plushies: Paleozoic Pals! www.priweb.org/mortgage-cam...
Progress bar showing how much money the Museum has raised: $2069708. Goal of $3200000.
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Asher HELLbein @asherelbein.bsky.social · 30/10/2025
My latest for @nytimes.com! For 40 years, paleontologists have grappled over whether a small tyrannosaur — named Nanotyrannus — was its own animal, or simply a teenage T.rex. The debate has been ... contentious. Which is why it's so fun to finally be able to say this: Folks? Nanotyrannus is real.
nytimes.com
The Case of the Tiny Tyrannosaurus Might Have Been Cracked
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Karl Bode @karlbode.com · 27/10/2025
I cannot tell you how many tech journalists at prominent media organizations do not understand this
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Dan Peppe @danpeppe.bsky.social · 26/10/2025
Members of the LEAFF Climate lab shared some of their exciting research and fossils at the Mayborn Museum’s Sic ‘Em Science Day celebrating #nationalfossilday! 🧪🪨
Students with fossils on table for National Fossil Day presentation
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The puppies Penn & Teller, and Richard @rdaily.medsky.social · 25/10/2025
That’s no ballroom!
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Kaedan O'Brien, Ph.D. @deadbovids.bsky.social · 24/10/2025
Biggest takeaway from this study: Dinosaurs were doing fine right up until the impact! #FossilFriday
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Dan Peppe @danpeppe.bsky.social · 24/10/2025
New dates for the Naashobito faunas from New Mexico help show that dinosaur diversity was declining making them weren’t extinction. Instead dinosaurs were diverse and thriving right up until the end-Cretaceous asteroid impact 🧪🪨🦕🦖☄️☠️
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Anthony (Tony) J. Martin @ichnologist.bsky.social · 23/10/2025
Cool paleo-🧵about the last dinosaurs from 66 mya in what's now New Mexico, & how their fossil record points toward diverse communities during the last few hundred-thousand years before a demise-inducing meteorite impact. Article in @science.org at the link: www.science.org/doi/10.1126/... 🧪🦖🦕☄️
science.org
Late-surviving New Mexican dinosaurs illuminate high end-Cretaceous diversity and provinciality
It has long been debated whether non-avian dinosaurs went extinct abruptly or gradually at the end-Cretaceous (66 million years ago), because their fossil record at this time is mostly limited to nort...
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Dan Peppe @danpeppe.bsky.social · 24/10/2025
A new cane rate from a middle Miocene fossil locality in Ramnagar, India do uments the species first occurrence outside the Potwar Plateau and helps constrain the age of the fossil site, and the apes found therein, to about 13 Ma. anatomypubs.onlinelibrary.wiley.com/doi/10.1002/... 🧪🪨🐀
anatomypubs.onlinelibrary.wiley.com
A cane rat of African affinity from the Middle Miocene ape locality of Ramnagar (J&K), India
A short-ranging Cane Rat of African affinity discovered from a Miocene Ape locality of Ramnagar. (a) An outcrop of Siwalik sediments at Ramnagar. (b) Map of India showing the location of Ramnagar, J&...
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Riley Black 🏳️‍⚧️ 🦕 @restingdinoface.bsky.social · 23/10/2025
New dates on fossils from New Mexico reveal a community of dinosaurs that were thriving right before the asteroid strike, including 80-foot-long, 30-ton giants like Alamosaurus. I’ll tell you more in my latest for NatGeo. 🧪
nationalgeographic.com
New evidence reveals dinosaurs were thriving right up to the moment the asteroid hit
Newly dated fossils from New Mexico challenge the idea that dinosaurs were in decline—and suggest instead they had formed flourishing communities.
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The Washington Post @washingtonpost.com · 23/10/2025
Paleontologists still debate whether dinosaurs were in decline even before the asteroid wiped them out. New precise dating techniques of a century-old fossil site in New Mexico are giving scientists a better idea.
washingtonpost.com
What really killed the dinosaurs? These rocks may unlock the answer.
New dating techniques at a fossil site in New Mexico attempt to dispel the theory that dinosaurs were already in decline before the fateful asteroid hit.
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Andrew Flynn @flynnpaleo.bsky.social · 23/10/2025
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.
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Andrew Flynn @flynnpaleo.bsky.social · 23/10/2025
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.
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Andrew Flynn @flynnpaleo.bsky.social · 23/10/2025
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.
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Andrew Flynn @flynnpaleo.bsky.social · 23/10/2025
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.
Four panel figure. Panel A shows map of western north ameria indicating major Laramide basins and hightlight the study area in the San Juan Basin of NW New Mexico. Panel B shows geologic map of the San Juan
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Andrew Flynn @flynnpaleo.bsky.social · 23/10/2025
We provide new age constraints on the Naashoibito Member in the San Juan Basin of NW New Mexico showing these rocks, and their unique dinosaurs, are among the last non-avian dinosaurs from the last 340 Kyr of the Cretaceous, contemporaneous with the famous Hell Creek fauna. doi.org/10.1126/scie...
doi.org
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Andrew Flynn @flynnpaleo.bsky.social · 23/10/2025
Our new paper is out in @science.org #ScienceResearch Our understanding of the dinosaurs at the very end of the Cretaceous is limited by few localities. What dinosaur biogeographic patterns were present leading up the K/Pg boundary? What can these tell us about end Cretaceous dinosaur communities
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Alessandro Chiarenza @macroecoevoale.bsky.social · 23/10/2025
New paper today in @science.org: we date the Naashoibito Member (New Mexico) to 66.4–66.0 Ma, coeval with the Hell Creek, with important remarks on pre-extinction dinosaur diversity & regionalisation in North America 🦖🦕☄1/ Art: @nataliajagielska.bsky.social 🔗 www.science.org/doi/10.1126/...
New Mexico dinosaurs including Alamosaurus watch the asteroid hit the Yucatán about 3,000 kilometres away, 66 million years ago
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Steve Brusatte @stevebrusatte.bsky.social · 23/10/2025
Read the paper here! www.science.org/doi/10.1126/...
science.org
Late-surviving New Mexican dinosaurs illuminate high end-Cretaceous diversity and provinciality
It has long been debated whether non-avian dinosaurs went extinct abruptly or gradually at the end-Cretaceous (66 million years ago), because their fossil record at this time is mostly limited to nort...
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Steve Brusatte @stevebrusatte.bsky.social · 23/10/2025
These were the dinosaurs that faced the asteroid. Some of the last survivors. They lived in New Mexico, 66 million years ago. Among them was Alamosaurus, the size of a jetplane. We unveiled them, and their true age, today in a new paper in @science.org !
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Dan Peppe @danpeppe.bsky.social · 24/10/2025
Excited to share the results of collaborative research in the San Juan Basin in New Mexico published today in @science.org that provides new age constraints for the Naashobito dinosaurs from New Mexico, like the giant sauropod, Alamosaurus: www.science.org/doi/10.1126/...
Illustration showing the giant sauropod dinosaur, Alamosaurus, in southern North America as the  asteroid impact that caused the Cretaceous-Paleocene impact hits the Earth
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Andrew Flynn @flynnpaleo.bsky.social · 17/10/2025
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.
Landscape picture of rocks in the San Juan Basin of northern New Mexico. Lower, drab colored rocks overlain by gold and tan sandstones plus fossilized trees.
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MarieintheMiddle @gyllohs.bsky.social · 18/10/2025
No Kings Waco TX #nokings
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Tiago Simões @trsimoes.bsky.social · 22/07/2025
A rare job opportunity for Invertebrate Zoology: fieldmuseum.hrmdirect.com/employment/j...
fieldmuseum.hrmdirect.com
Assistant Curator of Invertebrate Zoology, Careers At Field Museum
Position Assistant Curator of Invertebrate Zoology FLSA Status Exempt Department Negaunee Integrative Research Center Our Mission Since the 1893 World Columbian Exposition our organization has aimed...
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Bill Lukens @paleosol.bsky.social · 03/07/2025
Just got back from mapping Miocene-Pliocene sed rocks and fault blocks in West Turkana, Kenya with my great colleague @danpeppe.bsky.social. Here's the border fault separating Early Miocene strata (our focus) from the Turkana Basin. Image faces north. Losidok peak barely visible in the distance.🧪⚒️
Outcrops of red and gray sedimentary rocks on the left, and orange-beige sedimentary rocks on the right, separated by black lines drawn by me. Hills and a distant mountain (Losidok) are visible on the left, flat plains visible on the right. Desert scrub and acacia are present on the landscape. The left strata are labeled "Lothidok Basin, Early Miocene (18-20 Ma)". Strata on the right are labeled "Turkana Basin, ?Pliocene? beds".
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Dan Peppe @danpeppe.bsky.social · 16/06/2025
Another great summary of our recently published work on the climate, ecology, and environment of the early Miocene in western Kenya @munyaka.bsky.social @mcnultylab.bsky.social urls.grow.me/7Gl5Oyr91N
urls.grow.me
Early apes lived in a constantly changing world of fire and ash
Apes lived in this changing environment, which helped shape their evolution.Their behavior and diet were influenced by the landscape.
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Dan Peppe @danpeppe.bsky.social · 14/06/2025
#nokings Salisbury, CT
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Dan Peppe @danpeppe.bsky.social · 13/06/2025
Great summary of @munyaka.bsky.social’s recently published dissertation research reconstructing the environments of our early ape ancestors in Kenya!
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McNulty Lab @mcnultylab.bsky.social · 12/06/2025
A summary of our new paper, featuring the brilliant work of @munyaka.bsky.social and @danpeppe.bsky.social. Always new surprises from the fossil record!
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Eos @eos.org · 12/06/2025
Early apes lived in a land of forest fires, floods, and volcanoes, according to new early Miocene fossils. Research by @mcnultylab.bsky.social, @danpeppe.bsky.social, @munyaka.bsky.social, @paleosol.bsky.social, @susycote.bsky.social, @abigail-hall.bsky.social & colleagues. eos.org/research-spo...
eos.org
Early Apes Evolved in Tropical Forests Disturbed by Fires and Volcanoes - Eos
Fossils discovered at an early Miocene site in Kenya include a new type of early ape and offer clues about the environment inhabited by human ancestors.
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McNulty Lab @mcnultylab.bsky.social · 31/05/2025
Congratulations to @munyaka.bsky.social on this outstanding dissertation research! Special thanks to his advisor @danpeppe.bsky.social and to the other authors for a great collaboration: #paleoanthropology ∩ #paleontology ∩ #geology ∩ #forestry! agupubs.onlinelibrary.wiley.com/doi/epdf/10....
Figure from Munyaka et al 2025 Paleoceanography and Paleoclimatology showing images from a fossil site of paleobotanical material.
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Dan Peppe @danpeppe.bsky.social · 13/05/2025
Question for anyone who does field mapping - do you have a preferred device for mapping & tracking exposures while in the field?
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Jeremy Berg @jeremymberg.bsky.social · 24/04/2025
ATTENTION: NSF GRANT RECIPIENTS We received a heads up from a trusted source that you should proactively download/print/screen shot any documentation on research.gov pertaining to your NSF awards, both those that are current and any that have closed in the last 5-6 years. 1/n
media.tenor.com
a cartoon of a man holding a frying pan and a spoon with red alert written above him
ALT: a cartoon of a man holding a frying pan and a spoon with red alert written above him
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Dr. David Miller 🏳️‍🌈 @davidimiller.bsky.social · 24/04/2025
🚨 Practical URGENT tip for NSF grantees: Out of an abundance of caution, I would right now go into Research.gov and… 1. Download your NSF award letters. 2. Print PDF your annual reports. 3. Screenshot the status table for annual reports. NSF is planning maintenance tomorrow to Research.gov
Due to maintenance, Research.gov (including access to NSF-PAR, GRFP, PES, and ETAP) will be unavailable from Fri., 4/25 at 10:00 PM ET to Sat., 4/26 at 1:00 PM ET. NSF apologizes for any inconvenience.
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Dr. Kim Hannula @stressrelated.bsky.social · 02/03/2025
The Bureau of Reclamation office in Durango is on this list. It manages the dams in the San Juan-Animas-Dolores watersheds of the upper Colorado. (Vallecito, Lemon, Navajo, McPhee, Lake Nighthorse, maybe others that I can't remember)
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Dr. Jessica Ball 🍪 @tuffcookie.bsky.social · 02/03/2025
This includes the USGS Hawaiian and Alaska Volcano Observatories. HVO's Ironworks is a temporary space while a new facility is built to replace the Observatory critically damaged in 2018. Both groups are near their volcanoes. Neither has anywhere to go and both have been forbidden from telework.
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Evan Frost @wildwoods.bsky.social · 01/03/2025
Congress has just released a list of federal DOI offices to be closed under the ongoing massacre of our natural resource agencies -- it's extensive and includes many important NPS, BLM, USGS and USFWS facilities across the country. Truly horrific. democrats-naturalresources.house.gov/imo/media/do...
democrats-naturalresources.house.gov
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Alt NIH Bluesky 🧪 @altnih4science.bsky.social · 26/02/2025
Just got this passed on to us, about the damage at NIH's home campus -- the largest biomedical research institute in the world. "The articles on cuts and damage assessments are largely grants focused. The grants program is a bit easier to characterize because it’s visible outside the NIH..." 🧪 1/
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Stephanie Drumheller @uglyfossils.bsky.social · 19/02/2025
It's not much, but it's there to help for any colleagues who find themselves needing it: www.paleosoc.org/paleontologi...
paleosoc.org
Paleontological Society Emergency Fund
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Margaret Fraiser @margaretfraiser.bsky.social · 18/02/2025
Please let the GEO/EAR community know: Program Directors and Mission Support who’ve been at NSF under two years were just terminated via Zoom. Even those of us whose offer letter stated one probationary year and whose government data states “permanent”.
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Alt National Park Service @altnps.bsky.social · 09/02/2025
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