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Animal appendages, such as feathers, hair, and scales, usually develop as genetically controlled units during embryo development. There are some exceptions to this rule, such as the head scales on crocodiles, which have been found to be produced by purely mechanical processes.

Toothache may be hundreds of millions of years old. Teeth first evolved as sensory organs, not for chewing, according to a new analysis of animal fossils. newscientist.com/article/248118…

I will just leave this here for now...Enjoy Memorial Day! Brit Finucci Jenny Johnson Dominique Didier Marc Dando Ray Troll Princeton Nature Princeton University Press

Rescue of limited regeneration in a marine annelid model. 'Wnt/β-catenin signaling promotes posterior axial regeneration in non-regenerative tissue of the annelid Capitella teleta' by Lauren Kunselman Whitney Laboratory Society for Developmental Biology FLORIDA sciencedirect.com/science/articl…

Excited to share our new research in iScience journal ! We reveal that tortoise head scales are sculpted through two distinct developmental processes - chemical signalling and mechanical folding 🐢🔬 The Milinkovitch-Tzika lab Genetics & Evolution cell.com/iscience/fullt…

This is the skull of a tortoise embryo imaged with light sheet microscopy. Check out our new article in iScience journal to learn how both chemical signalling and mechanical forces sculpt their intricate head scales 🐢🔬 cell.com/iscience/fullt…

"Haridy hoped that the fish flakes might help fill in the gap: a hypothetical vertebrate somewhere between 'the squishy guys and the fully formed fish.'" defector.com/the-tooth-hurt…

Just published - Researchers have discovered that five large chromosomal inversions contributed to Lake Malawi cichlid diversity, akin to finding Mother Nature's cookbook for a "Quick Colourful Fish Salad!" 🔒 science.org/doi/10.1126/sc… Sci-comm post - myscience.org/en/news/2025/h…

50 years after ‘Jaws,’ researchers have retired the man-eater myth and revealed more about sharks’ amazing biology theconversation.com/50-years-after…

In 1975, “Jaws” – the tale of a killer great white shark that terrorizes a coastal tourist town – captured people’s imaginations and simultaneously created a widespread fear of the water. A shark expert explains some of their unique features and the many discoveries made in the

Great to see PBS PBS News picking up the article I wrote about the state of shark science since the release of 'Jaws' 50 years ago! 🦈🦈🦈 #JAWS #Jaws50

🐢 The tortoise head is sculpted by physics and genes! Our new research shows that tortoise head scales form through two distinct processes: 👉 Chemical signaling shapes the sides 👉 Mechanical stress folds the top 🔗 cell.com/iscience/fullt… Université de Genève Cell Press

Out today in PLOS Biology! We show that two major advances in fish feeding - highly protrusible jaws and large teeth - are functionally and evolutionarily incompatible with each other. Mike Mihalitsis and Peter Wainwright. Free to read: journals.plos.org/plosbiology/ar…

Ever wondered what a Nurse Shark mouth (Ginglymostoma cirratum) looks like? This is an image of a juvenile showing the sensory barbels, teeth and mouth on the underside of the head! The whole region is covered in skin denticles aka skin teeth! 🦈🦈🦈 #nurseshark #shark #teeth

How do basking sharks feed with such massive mouths? 🦈 Researchers built a 3D “digital puppet” from CT scans, museum specimens, and video to model their elusive cranial movements during filter feeding. Study by Tairan Li et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/ar…

🦈 The Squalomix project—an Earth BioGenome Project affiliate focused on sequencing sharks and rays—is also diving into tough aquaculture genomics challenges. Right now, we're keeping an eye out for chondrichthyan gene entries in NCBI that may be mislabeled with gene names

Here's a tortoise embryo developing inside its egg. Check out our new article in iScience journal to learn how molecular and mechanical systems sculpt their intricate head scales 🐢🔬

Please RT! My lab at FLORIDA has a Research Technician position available. We study the neural regulation of feeding in fruit flies and are looking to recruit a trainee with a computational background, such as connectomics and/or bioinformatics. Apply here tinyurl.com/yaolabtech

Some sharks develop via placental attachment to their mothers for nourishment (matrotrophy) - similar to humans! Here, 2 Atlantic sharpnose shark (Rhizoprionodon terraenovae) embryos are connected to a placenta with umbilical cords. #shark #devbio 🦈 #babyshark #sharkscience

Excited to share I'll be attending #SEB2025 in Antwerp in 2025. I'll present my postdoc project: "Color dynamics: How novel structural color mechanisms may aid blue sharks’ camouflage.” Thanks to my PI, MasonDean, and collaborators! Grateful to #GRF and #SEB travel grants!