Dr. Sven N. Nielsen's Avatar

Dr. Sven N. Nielsen

@snnielsen.bsky.social

geologist, paleontologist, malacologist Professor @ Universidad Austral de Chile

252 Followers  |  178 Following  |  262 Posts  |  Joined: 22.11.2024  |  1.7629

Latest posts by snnielsen.bsky.social on Bluesky

Fuck fascism

04.12.2025 01:11 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

No. No surprise at all.

01.12.2025 20:47 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

and he made Life Of Brian possible

01.12.2025 00:33 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Now, that could prove useful ๐Ÿงช

01.12.2025 00:25 โ€” ๐Ÿ‘ 6    ๐Ÿ” 3    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

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:

28.11.2025 18:38 โ€” ๐Ÿ‘ 1821    ๐Ÿ” 420    ๐Ÿ’ฌ 17    ๐Ÿ“Œ 7

Weโ€™d never get or send so cool an ambassador.

29.11.2025 05:23 โ€” ๐Ÿ‘ 4    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

๐Ÿงช

29.11.2025 19:27 โ€” ๐Ÿ‘ 10    ๐Ÿ” 5    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
Two photos of an ichthyosaur skeleton displayed on a wall at the NHM. The second photo is a closeup of the hindquarters, showing a fetal ichthyosaur skeleton that is being expelled from the skeleton of the presumed mother - the braincase and eye socket are just adjacent to the pelvic flipper of the presumed mother, and the rest of the fetus' skeleton is already protruding from the body, tail first.

Two photos of an ichthyosaur skeleton displayed on a wall at the NHM. The second photo is a closeup of the hindquarters, showing a fetal ichthyosaur skeleton that is being expelled from the skeleton of the presumed mother - the braincase and eye socket are just adjacent to the pelvic flipper of the presumed mother, and the rest of the fetus' skeleton is already protruding from the body, tail first.

#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.

28.11.2025 17:30 โ€” ๐Ÿ‘ 57    ๐Ÿ” 12    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
Preview
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 โ‰ˆ12m depth

Living #fossilfriday BRACHIOPOD, Terebratulina showing off its handsome lophophore! www.inaturalist.org/observations...

28.11.2025 14:42 โ€” ๐Ÿ‘ 21    ๐Ÿ” 4    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1

You'll be visited by 3 spirits

The three spirits

26.11.2025 18:35 โ€” ๐Ÿ‘ 20    ๐Ÿ” 7    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 1

This is alarming

27.11.2025 14:08 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Daily mollusk - not sure if these are larvae or holoplanktonic mollusks (i.e., mollusks who live their whole life in the plankton) ๐Ÿงช

22.11.2025 23:31 โ€” ๐Ÿ‘ 18    ๐Ÿ” 4    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
Preview
A Pliocene mega-tsunami deposit and associated features in the Ranquil Formation, southern Chile An exceptionally large tsunami affected the coastline of southern Chile during the Pliocene. Its backflow eroded coarse beach and coastal dune sedimenโ€ฆ

In case you got hooked by my comment:

21.11.2025 21:09 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
Preview
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, โ€ฆ

Nice study on coastal dune erosion by tsunami ๐Ÿงช
Too bad they did not read our paper ๐Ÿ˜

21.11.2025 21:07 โ€” ๐Ÿ‘ 7    ๐Ÿ” 2    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Very obvious and adequate song choice. I heard it in my head without having sound on.

20.11.2025 21:18 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
Preview
Brazilโ€™s hypocrisy at COP30 The Brazilian governmentโ€™s 20 October authorization of oil drilling in the mouth of the Amazon River stands in stark contrast to Brazilโ€™s role as host this week of the 30th Conference of the Parties t...

Hello Brazil? ๐Ÿงช

20.11.2025 21:16 โ€” ๐Ÿ‘ 3    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Author would be Paleontological Society, 2025?

19.11.2025 13:05 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
Post image

๐Ÿ“ข rphylopic ๐Ÿ“ฆ 1.6.0 is now on #CRAN!

- resolve_phylopic() retries failing API calls ๐Ÿ”„
- geom_phylopic()/add_phylopic() work with ggplot2 4.0.0 ๐Ÿช›
- add_phylopic_tree() wraps add_phylopic() for base R trees ๐Ÿชพ
- get_phylopic() can get og source files from #PhyloPic ๐Ÿ‘ค

rphylopic.palaeoverse.org
#Rstats

18.11.2025 15:30 โ€” ๐Ÿ‘ 37    ๐Ÿ” 12    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
Preview
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 Bahรญa Inglesa Formation distinguished as one of the most important in the region. Despite th...

New Miocene sharks dropped from Chile. Including the anime inspired new sawshark genus Pochitaserra ๐Ÿงช

13.11.2025 11:58 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
Post image

IPCC Chair @jimskeaclimate.bsky.social addressed the opening of Earth Information Day 2025 at COP30 today, stating that โ€œduring testing times, and facing complex challenges, IPCC will continue to reach for consensus on a shared and trusted evidence base.โ€

โžก๏ธ Full remarks www.ipcc.ch/2025/11/10/c...

10.11.2025 19:31 โ€” ๐Ÿ‘ 27    ๐Ÿ” 10    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 2
Slimonia acuminata from the:
Woodward, H., 1878. A monograph of the British fossil Crustacea, belonging to the Order Merostomata. Monographs of the Palaeontographical Society, 32(145), pp.ii-263.

Slimonia acuminata from the: Woodward, H., 1878. A monograph of the British fossil Crustacea, belonging to the Order Merostomata. Monographs of the Palaeontographical Society, 32(145), pp.ii-263.

This illustration from a classic, reminds us, that we need all three approaches to the ancient worlds:
Palรฆontography - the description of past life forms
Palรฆobiology - purely biological theoretical outlook
Palรฆontology - a holistic study of the past, combining different fields.
๐Ÿงช โš’๏ธ #Paleobio

05.11.2025 21:16 โ€” ๐Ÿ‘ 46    ๐Ÿ” 10    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Daily mollusk ๐Ÿงช

31.10.2025 16:07 โ€” ๐Ÿ‘ 3    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
"OH YOU CLAM!
Speak you clam, So Silent and sane 
we would fain hear your gentle voice again"
Old postcard with a picture of a clam and the above text

"OH YOU CLAM! Speak you clam, So Silent and sane we would fain hear your gentle voice again" Old postcard with a picture of a clam and the above text

30.09.2025 10:45 โ€” ๐Ÿ‘ 235    ๐Ÿ” 68    ๐Ÿ’ฌ 3    ๐Ÿ“Œ 6
Preview
A visual comparison of normal and paranormal distributions </br>![Graphic][1]</img> [1]: /embed/graphic-1.gif

jech.bmj.com/content/60/1/6

30.10.2025 13:17 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Loosing the PRI would devastate paleontology. Its collections are just incredible ๐Ÿงช

30.10.2025 13:04 โ€” ๐Ÿ‘ 6    ๐Ÿ” 2    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Nah. You ruined it. Fossils of ghosts are much more interesting. Especially this close to Halloween ๐Ÿ˜

30.10.2025 12:50 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Impressive slab. Only screws, no meshes? At least I can't see any.

30.10.2025 12:44 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
Preview
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.

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...

29.10.2025 22:37 โ€” ๐Ÿ‘ 60    ๐Ÿ” 41    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 2

Daily mollusk ๐Ÿงช

30.10.2025 01:59 โ€” ๐Ÿ‘ 27    ๐Ÿ” 3    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
Video thumbnail

Brittle star swimming! Love this movement.

27.10.2025 19:30 โ€” ๐Ÿ‘ 1095    ๐Ÿ” 264    ๐Ÿ’ฌ 17    ๐Ÿ“Œ 27

@snnielsen is following 20 prominent accounts