Ella Nicklin
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ellanicklin.bsky.social
Ella Nicklin
@ellanicklin.bsky.social
PhD student in the Fraser Lab @ UF studying shark denticle evo-devo 🦈🦷

https://ellanicklin.weebly.com
Reposted by Ella Nicklin
Hey Regen folks 👋 Excited to share that our single-nucleus RNA-seq dataset for Polypterus fin regeneration is now live at the Broad Institute portal! Dive in here: tinyurl.com/5bck22jx
Big thanks to the team for making this happen—looking forward to seeing what you all discover!
October 14, 2025 at 5:08 PM
Reposted by Ella Nicklin
Super excited to share our new paper, out today @pnas.org 'Teeth outside the jaw: Evolution and development of the toothed head clasper in chimaeras' @karlycohen.bsky.social 👻🦈 🦷 www.pnas.org/doi/10.1073/...
Teeth outside the jaw: Evolution and development of the toothed head clasper in chimaeras | PNAS
Chimaeras (Holocephali) are an understudied group of mostly deep-ocean cartilaginous fishes (Chondrichthyes) with unique characteristics that disti...
www.pnas.org
September 4, 2025 at 6:26 PM
Reposted by Ella Nicklin
New paper is officially out!
Ratfish have a second jaw on their foreheads - CT + histology show they’re real teeth, built from the same tissues and signals as oral teeth.

www.washington.edu/news/2025/09...
This common fish has an uncommon feature: forehead teeth, used for mating
New findings call into question one of the core assumptions about teeth. Adult male spotted ratfish, a shark-like species native to the eastern Pacific Ocean, have rows of teeth on top of their heads,...
www.washington.edu
September 4, 2025 at 7:01 PM
Reposted by Ella Nicklin
MBL scientists use skates and their embryos to study skeletal development. By shining a light through egg cases, scientists can watch the entire maturation process.

Learn more about skates as a research organism here: bit.ly/3Rmvq3F

📹 Bioquest
June 25, 2025 at 2:05 PM
Reposted by Ella Nicklin
#DBfeature 🦈🦷

Evolution, development, and regeneration of tooth-like epithelial appendages in sharks

by Ella Nicklin, Gareth Fraser et al @ellanicklin.bsky.social @garethjfraser.bsky.social
www.sciencedirect.com/science/arti...
March 17, 2025 at 12:03 PM
Reposted by Ella Nicklin
Check out this "donut" shark! From the @floridamuseum.bsky.social - malformed embryos of the sandbar shark (Carcharhinus plumbeus). @ellanicklin.bsky.social CT scanned this specimen to show very odd development of the vertebral column, with no division of the centra and odd mineralization! 🍩🦈 #shark
February 25, 2025 at 12:09 AM
Reposted by Ella Nicklin
What is the function of the elongate tail in elasmobranch #rays? A 🧵 and a new hypothesis. A paper with @juliachaumel.bsky.social in @royalsociety.org Proceedings B (shorturl.at/PmfYD) shows that the tail of cownose rays (and a few other species studied so far) has an elaborate lateral line.
January 22, 2025 at 5:18 PM
Reposted by Ella Nicklin
I'm recruiting a PhD student to join my lab at the University of Dayton (Fall 2025) to study the evo-devo of tadpoles! More info here: evol.mcmaster.ca/brian/evoldi...
November 24, 2024 at 12:49 AM
Reposted by Ella Nicklin
Do you love talking about tomography as much as I do? I made a starter pack full of people who use CT to do their science!! Let me know if you want to join in on the tomography talk! Other 3D imaging modalities also welcome ☢️🩻👩‍🔬
go.bsky.app/VjBpAAy
November 14, 2024 at 12:56 AM