Dr. Sven N. Nielsen
@snnielsen.bsky.social
geologist, paleontologist, malacologist
Professor @ Universidad Austral de Chile
Professor @ Universidad Austral de Chile
Now, that could prove useful 🧪
Out late for #FossilFriday, it's our invited @annualreviews.bsky.social paper with @sarahlsheffield.bsky.social and @bigfacecats.bsky.social on why Phylogenetic Paleoecology is useful and how to do it.
doi.org/10.1146/annu...
doi.org/10.1146/annu...
A Practical Guide to Phylogenetic Paleoecology
The burgeoning field of phylogenetic paleoecology combines paleoecological data with hypotheses of phylogenetic relationships to tease apart the roles that ecology and relatedness both play in the evo...
doi.org
December 1, 2025 at 12:25 AM
Now, that could prove useful 🧪
Reposted by Dr. Sven N. Nielsen
The media treated Biden's pardon of Hunter for trumped-up gun possession charges as more scandalous - far more scandalous - than Trump's pardon of war criminal serial killer Eddie Gallagher. And here we are:
Exclusive: Hegseth ordered everyone killed in the first alleged drug boat strike on Sept. 2, prompting a second hit to finish off survivors in the water in a mission led by SEAL Team 6. Ordering no quarter could legally perilous www.washingtonpost.com/national-sec...
Hegseth order on first Caribbean boat strike, officials say: Kill them all
Defense Secretary Pete Hegseth issued a verbal order to kill all crew members in the Sept. 2 strike on a suspected drug boat. Navy SEALs fired a second missile.
www.washingtonpost.com
November 28, 2025 at 6:38 PM
The media treated Biden's pardon of Hunter for trumped-up gun possession charges as more scandalous - far more scandalous - than Trump's pardon of war criminal serial killer Eddie Gallagher. And here we are:
Reposted by Dr. Sven N. Nielsen
We’d never get or send so cool an ambassador.
Taiwanese ambassador to Finland performs with his metal band at Taiwan-Finland cultural event! 🤘✊️
That's what I call great ambassador
That's what I call great ambassador
November 29, 2025 at 5:23 AM
We’d never get or send so cool an ambassador.
🧪
Science of the total environment (elsevier) gets deindexed.
This is your regular reminder to please stop chasing impact factors and shitty metrics so we can stop feeding this awful system...
An alternative is to publish in more society journals (when possible).
This is your regular reminder to please stop chasing impact factors and shitty metrics so we can stop feeding this awful system...
An alternative is to publish in more society journals (when possible).
The fall of a prolific science journal exposes the billion-dollar profits of scientific publishing
One of the 15 publications that put out the most studies globally has been expelled from the indexing system for irregularities. Its publisher, Elsevier, has a 38% profit margin that reached $1.5 bill...
english.elpais.com
November 29, 2025 at 7:28 PM
🧪
Reposted by Dr. Sven N. Nielsen
#fossilfriday One of the most famous "pregnant" ichthyosaurs, a specimen of Stenopterygius quadriscissus from the Jurassic of Holzmaden, Germany, preserved either during birth or as the fetus was expelled post-mortem.
November 28, 2025 at 5:30 PM
#fossilfriday One of the most famous "pregnant" ichthyosaurs, a specimen of Stenopterygius quadriscissus from the Jurassic of Holzmaden, Germany, preserved either during birth or as the fetus was expelled post-mortem.
Reposted by Dr. Sven N. Nielsen
Living #fossilfriday BRACHIOPOD, Terebratulina showing off its handsome lophophore! www.inaturalist.org/observations...
Northern Lampshell (Terebratulina septentrionalis)
Northern Lampshell from Beverly, MA, USA on June 11, 2023 at 01:46 PM by Alex Shure. A couple of rogue individuals in a protected overhang ≈12m depth
www.inaturalist.org
November 28, 2025 at 2:42 PM
Living #fossilfriday BRACHIOPOD, Terebratulina showing off its handsome lophophore! www.inaturalist.org/observations...
Reposted by Dr. Sven N. Nielsen
You'll be visited by 3 spirits
The three spirits
The three spirits
November 26, 2025 at 6:35 PM
You'll be visited by 3 spirits
The three spirits
The three spirits
This is alarming
"Here we show substantial declines in the rates of collection of specimen data over recent decades, from analysis of over 150 million records from the Global Biodiversity Information Facility (GBIF) spanning more than two centuries"
www.nature.com/articles/s41...
🧪 #Macroecology #EvoBio #Paleobio
www.nature.com/articles/s41...
🧪 #Macroecology #EvoBio #Paleobio
November 27, 2025 at 2:08 PM
This is alarming
Daily mollusk - not sure if these are larvae or holoplanktonic mollusks (i.e., mollusks who live their whole life in the plankton) 🧪
Cutie baby sea snails hanging out.
#marineplankton 🦑
#marineplankton 🦑
November 22, 2025 at 11:31 PM
Daily mollusk - not sure if these are larvae or holoplanktonic mollusks (i.e., mollusks who live their whole life in the plankton) 🧪
Nice study on coastal dune erosion by tsunami 🧪
Too bad they did not read our paper 😁
Too bad they did not read our paper 😁
Numerical investigation of severe dune erosion induced by a tsunami: A case study of the 2011 Tohoku-oki tsunami on Osuka coast, Hachinohe, Japan
Tsunami waves cause severe erosion and deposition in coastal areas. Although tsunami deposits are well surveyed because they reflect tsunami history, …
www.sciencedirect.com
November 21, 2025 at 9:07 PM
Nice study on coastal dune erosion by tsunami 🧪
Too bad they did not read our paper 😁
Too bad they did not read our paper 😁
Hello Brazil? 🧪
Brazil’s hypocrisy at COP30
The Brazilian government’s 20 October authorization of oil drilling in the mouth of the Amazon River stands in stark contrast to Brazil’s role as host this week of the 30th Conference of the Parties t...
www.science.org
November 20, 2025 at 9:16 PM
Hello Brazil? 🧪
Reposted by Dr. Sven N. Nielsen
📢 rphylopic 📦 1.6.0 is now on #CRAN!
- resolve_phylopic() retries failing API calls 🔄
- geom_phylopic()/add_phylopic() work with ggplot2 4.0.0 🪛
- add_phylopic_tree() wraps add_phylopic() for base R trees
- get_phylopic() can get og source files from #PhyloPic 👤
rphylopic.palaeoverse.org
#Rstats
- resolve_phylopic() retries failing API calls 🔄
- geom_phylopic()/add_phylopic() work with ggplot2 4.0.0 🪛
- add_phylopic_tree() wraps add_phylopic() for base R trees
- get_phylopic() can get og source files from #PhyloPic 👤
rphylopic.palaeoverse.org
#Rstats
November 18, 2025 at 3:30 PM
📢 rphylopic 📦 1.6.0 is now on #CRAN!
- resolve_phylopic() retries failing API calls 🔄
- geom_phylopic()/add_phylopic() work with ggplot2 4.0.0 🪛
- add_phylopic_tree() wraps add_phylopic() for base R trees
- get_phylopic() can get og source files from #PhyloPic 👤
rphylopic.palaeoverse.org
#Rstats
- resolve_phylopic() retries failing API calls 🔄
- geom_phylopic()/add_phylopic() work with ggplot2 4.0.0 🪛
- add_phylopic_tree() wraps add_phylopic() for base R trees
- get_phylopic() can get og source files from #PhyloPic 👤
rphylopic.palaeoverse.org
#Rstats
New Miocene sharks dropped from Chile. Including the anime inspired new sawshark genus Pochitaserra 🧪
Diving into the past: a new assemblage of Neogene elasmobranch microfossils from the eastern Pacific of South America
The fossil record of chondrichthyans from the Pacific coast of South America is rich and diverse, with the Bahía Inglesa Formation distinguished as one of the most important in the region. Despite th...
onlinelibrary.wiley.com
November 13, 2025 at 11:58 AM
New Miocene sharks dropped from Chile. Including the anime inspired new sawshark genus Pochitaserra 🧪
Reposted by Dr. Sven N. Nielsen
IPCC Chair @jimskeaclimate.bsky.social addressed the opening of Earth Information Day 2025 at COP30 today, stating that “during testing times, and facing complex challenges, IPCC will continue to reach for consensus on a shared and trusted evidence base.”
➡️ Full remarks www.ipcc.ch/2025/11/10/c...
➡️ Full remarks www.ipcc.ch/2025/11/10/c...
November 10, 2025 at 7:31 PM
IPCC Chair @jimskeaclimate.bsky.social addressed the opening of Earth Information Day 2025 at COP30 today, stating that “during testing times, and facing complex challenges, IPCC will continue to reach for consensus on a shared and trusted evidence base.”
➡️ Full remarks www.ipcc.ch/2025/11/10/c...
➡️ Full remarks www.ipcc.ch/2025/11/10/c...
Reposted by Dr. Sven N. Nielsen
This illustration from a classic, reminds us, that we need all three approaches to the ancient worlds:
Palæontography - the description of past life forms
Palæobiology - purely biological theoretical outlook
Palæontology - a holistic study of the past, combining different fields.
🧪 ⚒️ #Paleobio
Palæontography - the description of past life forms
Palæobiology - purely biological theoretical outlook
Palæontology - a holistic study of the past, combining different fields.
🧪 ⚒️ #Paleobio
November 5, 2025 at 9:16 PM
This illustration from a classic, reminds us, that we need all three approaches to the ancient worlds:
Palæontography - the description of past life forms
Palæobiology - purely biological theoretical outlook
Palæontology - a holistic study of the past, combining different fields.
🧪 ⚒️ #Paleobio
Palæontography - the description of past life forms
Palæobiology - purely biological theoretical outlook
Palæontology - a holistic study of the past, combining different fields.
🧪 ⚒️ #Paleobio
Daily mollusk 🧪
Putting US mollusk collections on the map
New pub on the project Mobilizing Millions of Marine Mollusks of the Eastern Seaboard, about why support for and digitization of mollusk collections matters
Not mine but PRI & Marvelous Mollusks exhibit are discussed🦑
www.researchgate.net/publication/...
New pub on the project Mobilizing Millions of Marine Mollusks of the Eastern Seaboard, about why support for and digitization of mollusk collections matters
Not mine but PRI & Marvelous Mollusks exhibit are discussed🦑
www.researchgate.net/publication/...
(PDF) Putting U.S. mollusk collections on the map: collaborative digitization and innovation
PDF | Among biocollections, mollusks are a particularly powerful resource for a wide range of studies, including biogeography, conservation, ecology,... | Find, read and cite all the research you need...
www.researchgate.net
October 31, 2025 at 4:07 PM
Daily mollusk 🧪
Reposted by Dr. Sven N. Nielsen
Loosing the PRI would devastate paleontology. Its collections are just incredible 🧪
Loosing the PRI would devastate US science. Any level donation, spreading the word helps. #FossilFriday #SaveScience
priweb.donorsupport.co/page/FUNWALK...
priweb.donorsupport.co/page/FUNWALK...
Save the Museum of the Earth – Secure Its Future!
In these challenging times, places like the Paleontological Research Institution (PRI) stand as beacons of hope, fostering understanding of the natural world and inspiring action for a sustainable fut...
priweb.donorsupport.co
October 30, 2025 at 1:04 PM
Loosing the PRI would devastate paleontology. Its collections are just incredible 🧪
Reposted by Dr. Sven N. Nielsen
Pretty good article about the specifics of PRI's situation and what led to the immediate need they have from upstate NY based media.
www.newyorkupstate.com/news/2025/10...
www.newyorkupstate.com/news/2025/10...
This hidden gem Upstate NY museum with dino bones you can touch is on the brink of extinction
Officials say the museum that houses a mastadon skeleton needs to raise $1 million by the end of 2025 to avoid foreclosure.
www.newyorkupstate.com
October 29, 2025 at 10:37 PM
Pretty good article about the specifics of PRI's situation and what led to the immediate need they have from upstate NY based media.
www.newyorkupstate.com/news/2025/10...
www.newyorkupstate.com/news/2025/10...
Daily mollusk 🧪
A few weeks ago I trash talked myself right into an art challenge with Franz by saying I was going to draw 3 nudibranchs for every crab because we need MORE nudibranchs and LESS crabs...
So today I present to you, TRIPLE the nudis to Franz's crabs.
#Invertebrates #SciArt #TradArt
So today I present to you, TRIPLE the nudis to Franz's crabs.
#Invertebrates #SciArt #TradArt
October 30, 2025 at 1:59 AM
Daily mollusk 🧪
Reposted by Dr. Sven N. Nielsen
Brittle star swimming! Love this movement.
October 27, 2025 at 7:30 PM
Brittle star swimming! Love this movement.
Reposted by Dr. Sven N. Nielsen
New rules for a rat-race. I my opinion, all this micro-accounting (= internal author struggles), inhibits effective collaboration. Science increasingly turns to a goal-oriented bureaucracy, away from an open art-like exploration, curiosity and thruth-seeking.
🧪
www.nature.com/articles/d41...
🧪
www.nature.com/articles/d41...
Google Scholar tool gives extra credit to first and last authors
Researchers welcome the initiative, but say it doesn’t go far enough to capture the nuance of researcher productivity and impact.
www.nature.com
October 26, 2025 at 7:43 PM
New rules for a rat-race. I my opinion, all this micro-accounting (= internal author struggles), inhibits effective collaboration. Science increasingly turns to a goal-oriented bureaucracy, away from an open art-like exploration, curiosity and thruth-seeking.
🧪
www.nature.com/articles/d41...
🧪
www.nature.com/articles/d41...
Daily mollusk - well played title 🧪
October 19, 2025 at 6:58 PM
Daily mollusk - well played title 🧪
Reposted by Dr. Sven N. Nielsen
Please enjoy my cartoon for Thursday's Toronto Star
October 15, 2025 at 8:05 PM
Please enjoy my cartoon for Thursday's Toronto Star
Reposted by Dr. Sven N. Nielsen
dang it bobbit progress video
October 14, 2025 at 3:02 PM
dang it bobbit progress video