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Merle Greif

@merlegreif.bsky.social
60 followers 42 following 2 posts

🇨🇭Scientific associate at the natural history museum of Zurich 🇨🇭PhD at the University of Zurich, Switzerland. 🦈 🇲🇦 Studying Devonian chondrichthyans from Morocco

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Reposted by Merle Greif
Amin El Fassi El Fehri | أمين الفاسي الفهري @aminff.bsky.social · 26/08/2026
🧪So happy this is finally out after almost four years! We try to bring some order to the messy taxonomy of an iconic jawless fish. 🐟 Thanks to @evopalaeo.bsky.social, Madleen, Mike, @fossilrob.bsky.social & to all who contributed to this research! onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com
The taxonomy and phylogeny of British ‘cephalaspids’
Osteostracans are considered the sister group of jawed vertebrates and are phylogenetically the earliest branching vertebrate lineage to exhibit true paired fins with endoskeletal support. This means...
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Merle Greif @merlegreif.bsky.social · 15/02/2026
Our work on the histology and mineralization patterns of 3 Devonian chondrichthyan taxa from Morocco is finally out now! I am very happy to share this work and hope there will be more to come about early shark tooth histology! Thanks to all my co-authors, especially Hector Botella! rdcu.be/e34zE
rdcu.be
Diversity of tooth mineralisation patterns at the base of crown chondrichthyans
Communications Biology - The study of three in situ preserved chondrichthyan tooth files reveals histological and developmental disparity at the stem of crown chondrichthyans and provides insights...
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Reposted by Merle Greif
18th ISELV @iselv18.bsky.social · 28/01/2026
‼️⏰One week to go! The countdown for the 18th #ISELV has started! 📅See the scheduled talks on our programme and abstract book. 🌐Can't come in person? Register for online attendance! 🔗All information available on our website, link in bio.
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Reposted by Merle Greif
18th ISELV @iselv18.bsky.social · 30/10/2025
‼️Attention early #vertebrate enthusiasts‼️ 📝Submit your #abstract for the 18th #ISELV before 23:59 (UTC+1) on Fri 31st Oct 🌐Please follow the #submission instructions provided here: sites.google.com/view/iselv-1... 🦈We look forward to receiving your contributions!
Photograph of a motorcycle parked in the Moroccan desert. The bold text at the top of the image reads: "Abstract submission deadline 31st october" (c: Time Haye 2024)
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Reposted by Merle Greif
18th ISELV @iselv18.bsky.social · 25/09/2025
‼️Chirp, chirp‼️ 🐣Early bird registration for the 18th ISELV closes in 5 DAYS! 📆Make sure you register before September 30th for lower fees! 🌐Follow this link: sites.google.com/view/iselv-1...
Two birds sitting on a hillside in the Moroccan desert. The bold text in the background says “Early bird registration, 5 days”.
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Reposted by Merle Greif
18th ISELV @iselv18.bsky.social · 20/08/2025
‼️Registration for the 18th ISELV is now open!‼️ 🌐Follow this link to save your spot now! sites.google.com/view/iselv-1... 🚨Early bird deadline is 31 Sept 🐟Join us in Morocco for some fishy business!
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Reposted by Merle Greif
Horizons Magazine @horizons-en.bsky.social · 21/07/2025
The fossilised teeth 🦷 of a prehistoric 🦈 shark reveal how this apex predator caught and ate its prey. 👇 @merlegreif.bsky.social
horizons-mag.ch
Prehistoric sharks
Horizons - In brief
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Reposted by Merle Greif
Dr. Jack Cooper @cooperpalaeo.bsky.social · 04/08/2025
New #ScienceCommunication website blog from me. Here, I reflect on a framework inferring ecological traits from shark teeth from my PhD & look at 2 fascinating studies that took it further than even I thought possible 🦈 Give it a read here: www.drjackacooper.com/writing/new-...
drjackacooper.com
New studies highlight the use and limitations of teeth as ecological proxies in ancient sharks — Dr. Jack A. Cooper
In 2023, I published my first PhD chapter as a scientific paper – producing a framework to infer shark traits from tooth measurements. Being based on living sharks, I would subsequently apply this fra...
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Reposted by Merle Greif
18th ISELV @iselv18.bsky.social · 09/07/2025
📢 ISELV field trips in #Morocco! ⛰️⛏️🪨🦴 Our first field trip (29/01-02/02) will take you through #Mesozoic sites in the Western Atlas! 🦖🦎 The second field trip (09-14/02) will focus on the iconic #Devonian sites of the Anti-Atlas! 🐟🦈 Registration is coming soon! #palaeontology #fossil #vertebrate
Palaeontologists looking for fossils at the Devonian locality of Hamar Laghdad, aka. the "Red Cliff".Two palaeontologists looking at an elevated rock face and taking notes. In the background, a group of five camels passes by a dry river bed in at the foot of the hill.A group of palaeontologists making their way down the "Red Cliff", the Hamar Laghdad fossil site.Palaeontolgists sitting on a hill site at Hamar Laghdad, the "Red Cliff".
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Reposted by Merle Greif
18th ISELV @iselv18.bsky.social · 04/07/2025
‼️To all early vertebrate enthusiasts‼️ The 18th International Symposium on Early and Lower Vertebrates #ISELV will be held in Berrechid, Morocco on 3-8 February 2026! 🐟🦈🦎🦴 We look forward to hosting you there! For more info, see our website (link in bio) #fish #vertebrate #palaeontology #fossils
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Reposted by Merle Greif
Amin El Fassi El Fehri | أمين الفاسي الفهري @aminff.bsky.social · 03/06/2025
Delighted to have the first paper of my PhD published today in @peerj.bsky.social on a wonderful lungfish tooth plate from Morocco 🐟🦷! With @draliceclement.bsky.social, @merlegreif.bsky.social, & colleagues. peerj.com/articles/193...
peerj.com
A new origin of the ‘modern’ lungfish dentition revealed by taxonomic overlap between Devonian and Carboniferous dipnoans
Lungfishes (Dipnoi, Sarcopterygii) initially radiated in the Early Devonian, and reached the apogee of their diversity during this period, especially with regard to their dentitions. Following the end...
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Merle Greif @merlegreif.bsky.social · 29/01/2025
As my very first post here on Bluesky I am happy to share our article in Royal Society about tooth wear and diet in the large Devonian chondrichthyan Ctenacanthus concinnus from Morocco royalsocietypublishing.org/doi/10.1098/...
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