Sven Sachs
@dinosven.bsky.social
Vertebrate palaeontologist, associate researcher at Naturkunde-Museum Bielefeld (Germany). Research topic Mesozoic marine reptiles.
https://www.sachspal.de
https://www.sachspal.de
I'm having a great time at the LWL-Museum für Naturkunde in Münster, where I'm studying the new of the plesiosaur Westphaliasaurus today.
#science #paleontology
#science #paleontology
August 28, 2025 at 10:11 AM
I'm having a great time at the LWL-Museum für Naturkunde in Münster, where I'm studying the new of the plesiosaur Westphaliasaurus today.
#science #paleontology
#science #paleontology
Some specimens of Protoceratops andrewsi, a ceratopsian dinosaur from the Late Cretaceous of Mongolia, shown at the American Museum of Natural History in New York. Photos taken during a visit in 2023.
#fossilfriday #dinosaur #dinosaurs #newyork #fossil #fossils #cretaceous #mongolia #nature #museum
#fossilfriday #dinosaur #dinosaurs #newyork #fossil #fossils #cretaceous #mongolia #nature #museum
August 22, 2025 at 7:15 AM
Some specimens of Protoceratops andrewsi, a ceratopsian dinosaur from the Late Cretaceous of Mongolia, shown at the American Museum of Natural History in New York. Photos taken during a visit in 2023.
#fossilfriday #dinosaur #dinosaurs #newyork #fossil #fossils #cretaceous #mongolia #nature #museum
#fossilfriday #dinosaur #dinosaurs #newyork #fossil #fossils #cretaceous #mongolia #nature #museum
Marine reptiles from the Middle Jurassic (Callovian) Oxford Clay of Peterborough, England, on display at the Palaeontological Institute and Museum of Tübingen University in Germany.
#fossilfriday #fossil #plesiosaur #ichthyosaur #tuebingen #germany #fossils #jurassic #england
#fossilfriday #fossil #plesiosaur #ichthyosaur #tuebingen #germany #fossils #jurassic #england
August 15, 2025 at 1:01 PM
Marine reptiles from the Middle Jurassic (Callovian) Oxford Clay of Peterborough, England, on display at the Palaeontological Institute and Museum of Tübingen University in Germany.
#fossilfriday #fossil #plesiosaur #ichthyosaur #tuebingen #germany #fossils #jurassic #england
#fossilfriday #fossil #plesiosaur #ichthyosaur #tuebingen #germany #fossils #jurassic #england
This photo shows the holotype specimen of Plesionectes at the Staatliches Museum für Naturkunde Stuttgart. 2/2
August 8, 2025 at 10:26 AM
This photo shows the holotype specimen of Plesionectes at the Staatliches Museum für Naturkunde Stuttgart. 2/2
I'm grateful to the finder, Georg Göltz, for contacting me, allowing its description, and donating this significant specimen to the Palaeontological Museum in Nierstein. Thanks also to project leader Johan Lindgren, my co-author Dean Lomax, and to Joschua for the fantastic palaeoart! 6/7
July 16, 2025 at 5:04 PM
I'm grateful to the finder, Georg Göltz, for contacting me, allowing its description, and donating this significant specimen to the Palaeontological Museum in Nierstein. Thanks also to project leader Johan Lindgren, my co-author Dean Lomax, and to Joschua for the fantastic palaeoart! 6/7
Temnodontosaurus had the largest eyes of any vertebrate known, which support the hypothesis that this aquatic reptile hunted under low-light conditions. 5/7
July 16, 2025 at 5:04 PM
Temnodontosaurus had the largest eyes of any vertebrate known, which support the hypothesis that this aquatic reptile hunted under low-light conditions. 5/7
This, together with the flipper's wing-like shape and serrated edge, collectively indicates that this morphology helped the massive animal to minimize sound production during swimming. 4/7
July 16, 2025 at 5:04 PM
This, together with the flipper's wing-like shape and serrated edge, collectively indicates that this morphology helped the massive animal to minimize sound production during swimming. 4/7
Temnodontosaurus was the largest megapredator of the Lower Jurassic (more than 10 m long). The flipper lacks bones at the distal end, which show that the soft-tissue flipper was much longer than the bones indicate. 3/7
July 16, 2025 at 5:04 PM
Temnodontosaurus was the largest megapredator of the Lower Jurassic (more than 10 m long). The flipper lacks bones at the distal end, which show that the soft-tissue flipper was much longer than the bones indicate. 3/7
The nearly 1m-long front flipper, found in 2009 by Georg Göltz in Dotternhausen, Germany, is Lower Jurassic in age. It preserves a serrated trailing edge with unique rod-like structures we've named 'chondroderms.' 2/7
#paleontology #biology #germany
#paleontology #biology #germany
July 16, 2025 at 5:04 PM
The nearly 1m-long front flipper, found in 2009 by Georg Göltz in Dotternhausen, Germany, is Lower Jurassic in age. It preserves a serrated trailing edge with unique rod-like structures we've named 'chondroderms.' 2/7
#paleontology #biology #germany
#paleontology #biology #germany
Big news! Our study, just out in Nature, is a game-changer for giant ichthyosaurs! We describe the first Temnodontosaurus flipper with fossilized soft tissue, giving us a unique look at how these massive creatures used stealth while hunting in darkness. 1/7
#science #news #scicomm
#science #news #scicomm
July 16, 2025 at 5:04 PM
Fantastic news!
I've just been informed that an important study I'm involved in is set to be published next Wednesday. This photo offers a hint at what it's about. I can't reveal more details, but our study will change the way we look at these marine animals.
I've just been informed that an important study I'm involved in is set to be published next Wednesday. This photo offers a hint at what it's about. I can't reveal more details, but our study will change the way we look at these marine animals.
July 10, 2025 at 7:55 PM
Fantastic news!
I've just been informed that an important study I'm involved in is set to be published next Wednesday. This photo offers a hint at what it's about. I can't reveal more details, but our study will change the way we look at these marine animals.
I've just been informed that an important study I'm involved in is set to be published next Wednesday. This photo offers a hint at what it's about. I can't reveal more details, but our study will change the way we look at these marine animals.
I just came across this image showing 'Pliosaurus' irgisensis when on display at the Pugachevsky Regional Museum (Pugachyov, Russia) in 1941. 1/4
Source: upload.wikimedia.org/wikipedia/ru...
Source: upload.wikimedia.org/wikipedia/ru...
July 6, 2025 at 10:35 AM
I just came across this image showing 'Pliosaurus' irgisensis when on display at the Pugachevsky Regional Museum (Pugachyov, Russia) in 1941. 1/4
Source: upload.wikimedia.org/wikipedia/ru...
Source: upload.wikimedia.org/wikipedia/ru...
I had a great day, doing research at the Nature Education Centre of Kraków University. Here are some photos of the Triassic archosauriform Smog wawelski that was found in Poland.
#FossilFriday #paleontology #science #research #nature
#FossilFriday #paleontology #science #research #nature
July 4, 2025 at 12:50 PM
I had a great day, doing research at the Nature Education Centre of Kraków University. Here are some photos of the Triassic archosauriform Smog wawelski that was found in Poland.
#FossilFriday #paleontology #science #research #nature
#FossilFriday #paleontology #science #research #nature
Saw this two ago in Holzmaden, Germany, where I studied an amazing plesiosaur fossil at the Urwelt-Museum Hauff.
#fossilfriday #art #germany
#fossilfriday #art #germany
June 13, 2025 at 11:12 AM
Saw this two ago in Holzmaden, Germany, where I studied an amazing plesiosaur fossil at the Urwelt-Museum Hauff.
#fossilfriday #art #germany
#fossilfriday #art #germany
Having a good time at the Urwelt-Museum Hauff in Holzmaden, studying beautifully preserved Lower Jurassic plesiosaurs found in nearby quarries.
#research #science #paleontology #palaeontology
#research #science #paleontology #palaeontology
May 29, 2025 at 8:27 AM
Having a good time at the Urwelt-Museum Hauff in Holzmaden, studying beautifully preserved Lower Jurassic plesiosaurs found in nearby quarries.
#research #science #paleontology #palaeontology
#research #science #paleontology #palaeontology
Please welcome Stoilodon lindenbergi
I'm happy to announce that our paper on Stoilodon lindenbergi, a new chimaeroid species from the Lower Cretaceous of #Germany, is out. We named it after the German singer Udo Lindenberg, born in Gronau in Westfalen where the specimen was found.
#science
1/3
I'm happy to announce that our paper on Stoilodon lindenbergi, a new chimaeroid species from the Lower Cretaceous of #Germany, is out. We named it after the German singer Udo Lindenberg, born in Gronau in Westfalen where the specimen was found.
#science
1/3
April 3, 2025 at 5:21 PM
🚨 New plesiosaur paper 🚨
I'm pleased to announce that our paper on the plesiosaur Plesiopterys wildi has been published today in PeerJ: peerj.com/articles/189...
In our study, led by @miguelpmarx.bsky.social, we describe a new and previously undescribed specimen.
#science #research
1/4
I'm pleased to announce that our paper on the plesiosaur Plesiopterys wildi has been published today in PeerJ: peerj.com/articles/189...
In our study, led by @miguelpmarx.bsky.social, we describe a new and previously undescribed specimen.
#science #research
1/4
March 31, 2025 at 1:39 PM
🚨 New plesiosaur paper 🚨
I'm pleased to announce that our paper on the plesiosaur Plesiopterys wildi has been published today in PeerJ: peerj.com/articles/189...
In our study, led by @miguelpmarx.bsky.social, we describe a new and previously undescribed specimen.
#science #research
1/4
I'm pleased to announce that our paper on the plesiosaur Plesiopterys wildi has been published today in PeerJ: peerj.com/articles/189...
In our study, led by @miguelpmarx.bsky.social, we describe a new and previously undescribed specimen.
#science #research
1/4
This image shows the holotype of Microcleidus brachypterygius, a plesiosaur from the Lower Jurassic Posidonia Shale of Germany that is perfectly preserved and even contains fossilised remnants of soft tissue. University of Tübingen collection.
#fossilfriday #science #germany #paleontology #nature
#fossilfriday #science #germany #paleontology #nature
March 7, 2025 at 11:31 AM
This image shows the holotype of Microcleidus brachypterygius, a plesiosaur from the Lower Jurassic Posidonia Shale of Germany that is perfectly preserved and even contains fossilised remnants of soft tissue. University of Tübingen collection.
#fossilfriday #science #germany #paleontology #nature
#fossilfriday #science #germany #paleontology #nature
We also discuss previous assignments and show that Plesiopterys wildi is not a juvenile Seeleyosaurus but a distinct genus that inhabited the Posidonia Shale during the Toarcian stage of the Lower #Jurassic.
Link to our study: anatomypubs.onlinelibrary.wiley.com/toc/19328494...
6/6
#ocean #life
Link to our study: anatomypubs.onlinelibrary.wiley.com/toc/19328494...
6/6
#ocean #life
February 21, 2025 at 2:01 PM
We also discuss previous assignments and show that Plesiopterys wildi is not a juvenile Seeleyosaurus but a distinct genus that inhabited the Posidonia Shale during the Toarcian stage of the Lower #Jurassic.
Link to our study: anatomypubs.onlinelibrary.wiley.com/toc/19328494...
6/6
#ocean #life
Link to our study: anatomypubs.onlinelibrary.wiley.com/toc/19328494...
6/6
#ocean #life
Fortunately, however, there are several casts of the skeleton, and the skull had been replaced by a model and is still there. In our study, we highlight various aspects of the history, anatomy and taxonomy of Seeleyosaurus guilelmiimperatoris. 5/6
#palaeontology #fossils #research #marine
#palaeontology #fossils #research #marine
February 21, 2025 at 2:01 PM
Fortunately, however, there are several casts of the skeleton, and the skull had been replaced by a model and is still there. In our study, we highlight various aspects of the history, anatomy and taxonomy of Seeleyosaurus guilelmiimperatoris. 5/6
#palaeontology #fossils #research #marine
#palaeontology #fossils #research #marine
During the Second World War, the skeleton could not be removed before the museum was hit by a bomb. A typist kept the fossil wet while the museum burned, but it was eventually destroyed when the celling collapsed. Only some burnt fragments of the postcranium survived. 4/6
#Stuttgart #museum
#Stuttgart #museum
February 21, 2025 at 2:01 PM
During the Second World War, the skeleton could not be removed before the museum was hit by a bomb. A typist kept the fossil wet while the museum burned, but it was eventually destroyed when the celling collapsed. Only some burnt fragments of the postcranium survived. 4/6
#Stuttgart #museum
#Stuttgart #museum
A second specimen, also from the Posidonia Shale of Holzmaden, is curated in Stuttgart. It was also originally complete and articulated. When it was on display in the old Naturalienkabinett, the skeleton was integrated into a wall together with Meyerasaurus victor. 3/6
#palaeontology #biodiversity
#palaeontology #biodiversity
February 21, 2025 at 2:01 PM
A second specimen, also from the Posidonia Shale of Holzmaden, is curated in Stuttgart. It was also originally complete and articulated. When it was on display in the old Naturalienkabinett, the skeleton was integrated into a wall together with Meyerasaurus victor. 3/6
#palaeontology #biodiversity
#palaeontology #biodiversity
Wilhelm Dames described the specimen in 1895 as Plesiosaurus guilelmiimperatoris and used it as a model for early palaeoart depicting a plesiosaur with a caudal fin. The fossil was purchased with the support of the German Emperor Wilhelm II, after whom the species is named. 2/6
#Berlin #History
#Berlin #History
February 21, 2025 at 2:01 PM
🚨 New plesiosaur paper 🚨
After 12 years of work, our paper about Seeleyosaurus was published today. Seeleyosaurus was the first complete plesiosaur found in Germany. The holotype at the NHM Berlin is almost complete, articulated and even has fossilised skin. 1/6
#FossilFriday #Science #Germany
After 12 years of work, our paper about Seeleyosaurus was published today. Seeleyosaurus was the first complete plesiosaur found in Germany. The holotype at the NHM Berlin is almost complete, articulated and even has fossilised skin. 1/6
#FossilFriday #Science #Germany
February 21, 2025 at 2:01 PM
🚨 New plesiosaur paper 🚨
After 12 years of work, our paper about Seeleyosaurus was published today. Seeleyosaurus was the first complete plesiosaur found in Germany. The holotype at the NHM Berlin is almost complete, articulated and even has fossilised skin. 1/6
#FossilFriday #Science #Germany
After 12 years of work, our paper about Seeleyosaurus was published today. Seeleyosaurus was the first complete plesiosaur found in Germany. The holotype at the NHM Berlin is almost complete, articulated and even has fossilised skin. 1/6
#FossilFriday #Science #Germany
The holotype of Lorrainosaurus along with a model of the skull is on display in Luxembourg and can be seen 24 hours a day, 7 days a week, as it is placed in a large window facing the street. 2/2
Link to our OA publication: www.nature.com/articles/s41...
#museum #luxembourg #pliosaur #fossil
Link to our OA publication: www.nature.com/articles/s41...
#museum #luxembourg #pliosaur #fossil
February 14, 2025 at 3:19 PM
The holotype of Lorrainosaurus along with a model of the skull is on display in Luxembourg and can be seen 24 hours a day, 7 days a week, as it is placed in a large window facing the street. 2/2
Link to our OA publication: www.nature.com/articles/s41...
#museum #luxembourg #pliosaur #fossil
Link to our OA publication: www.nature.com/articles/s41...
#museum #luxembourg #pliosaur #fossil