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Merle Greif

@merlegreif

๐Ÿ‡จ๐Ÿ‡ญPhD candidate at the University of Zurich, Switzerland. ๐Ÿฆˆ ๐Ÿ‡ฒ๐Ÿ‡ฆ Studying Devonian chondrichthyans from Morocco

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28.01.2025
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Latest posts by Merle Greif @merlegreif

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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...

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

15.02.2026 09:37 ๐Ÿ‘ 15 ๐Ÿ” 5 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1
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โ€ผ๏ธโฐOne week to go! The countdown for the 18th #ISELV has started!

๐Ÿ“…See the scheduled talks on our programme and abstract book.

๐ŸŒCan't come in person? Register for online attendance!

๐Ÿ”—All information available on our website, link in bio.

28.01.2026 22:07 ๐Ÿ‘ 0 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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)

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)

โ€ผ๏ธAttention early #vertebrate enthusiastsโ€ผ๏ธ

๐Ÿ“Submit your #abstract for the 18th #ISELV before 23:59 (UTC+1) on Fri 31st Oct

๐ŸŒPlease follow the #submission instructions provided here: sites.google.com/view/iselv-1...

๐ŸฆˆWe look forward to receiving your contributions!

30.10.2025 11:36 ๐Ÿ‘ 1 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Two birds sitting on a hillside in the Moroccan desert. The bold text in the background says โ€œEarly bird registration, 5 daysโ€.

Two birds sitting on a hillside in the Moroccan desert. The bold text in the background says โ€œEarly bird registration, 5 daysโ€.

โ€ผ๏ธChirp, chirpโ€ผ๏ธ

๐ŸฃEarly bird registration for the 18th ISELV closes in 5 DAYS!

๐Ÿ“†Make sure you register before September 30th for lower fees!

๐ŸŒFollow this link: sites.google.com/view/iselv-1...

25.09.2025 11:25 ๐Ÿ‘ 1 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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โ€ผ๏ธRegistration for the 18th ISELV is now open!โ€ผ๏ธ

๐ŸŒFollow this link to save your spot now! sites.google.com/view/iselv-1...

๐ŸšจEarly bird deadline is 31 Sept

๐ŸŸJoin us in Morocco for some fishy business!

20.08.2025 01:42 ๐Ÿ‘ 4 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Prehistoric sharks Horizons - In brief

The fossilised teeth ๐Ÿฆท of a prehistoric ๐Ÿฆˆ shark reveal how this apex predator caught and ate its prey. ๐Ÿ‘‡
@merlegreif.bsky.social

21.07.2025 06:00 ๐Ÿ‘ 1 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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New studies highlight the use and limitations of teeth as ecological proxies in ancient sharks โ€” Dr. Jack A. Cooper In 2023, I published my first PhD chapter as a scientific paper โ€“ producing a framework to infer shark traits from tooth measurements. Being based on living sharks, I would subsequently apply this fra...

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 ๐Ÿฆˆ

Give it a read here:
www.drjackacooper.com/writing/new-...

04.08.2025 13:23 ๐Ÿ‘ 5 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Palaeontologists looking for fossils at the Devonian locality of Hamar Laghdad, aka. the "Red Cliff".

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.

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.

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".

Palaeontolgists sitting on a hill site at Hamar Laghdad, the "Red Cliff".

๐Ÿ“ข ISELV field trips in #Morocco! โ›ฐ๏ธโ›๏ธ๐Ÿชจ๐Ÿฆด

Our first field trip (29/01-02/02) will take you through #Mesozoic sites in the Western Atlas! ๐Ÿฆ–๐ŸฆŽ

The second field trip (09-14/02) will focus on the iconic #Devonian sites of the Anti-Atlas! ๐ŸŸ๐Ÿฆˆ

Registration is coming soon!

#palaeontology #fossil #vertebrate

09.07.2025 13:30 ๐Ÿ‘ 5 ๐Ÿ” 5 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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โ€ผ๏ธTo all early vertebrate enthusiastsโ€ผ๏ธ

The 18th International Symposium on Early and Lower Vertebrates #ISELV will be held in Berrechid, Morocco on 3-8 February 2026! ๐ŸŸ๐Ÿฆˆ๐ŸฆŽ๐Ÿฆด

We look forward to hosting you there!

For more info, see our website (link in bio)

#fish #vertebrate #palaeontology #fossils

04.07.2025 10:02 ๐Ÿ‘ 4 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1
A new origin of the โ€˜modernโ€™ 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...

Delighted to have the first paper of my PhD published today in @peerj.bsky.social on a wonderful lungfish tooth plate from Morocco ๐ŸŸ๐Ÿฆท! With @draliceclement.bsky.social, @merlegreif.bsky.social, & colleagues. peerj.com/articles/193...

03.06.2025 09:41 ๐Ÿ‘ 21 ๐Ÿ” 13 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 1
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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/...

29.01.2025 08:09 ๐Ÿ‘ 14 ๐Ÿ” 4 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0