The Anatomical Record
@anatrecord.bsky.social
The Anatomical Record publishes new discoveries in morphological aspects of molecular, cellular, systems, and evolutionary biology. Official journal of the American Association for Anatomy. https://anatomicalrecord.com/
Ceratopsids like Triceratops are iconic—but how their horns and frills grew is still poorly understood. New osteohistology of a subadult T. horridus reveals major ontogenetic shifts in horn & squamosal growth & novel growth marks
Obuszewski et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Obuszewski et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
January 9, 2026 at 12:01 PM
Ceratopsids like Triceratops are iconic—but how their horns and frills grew is still poorly understood. New osteohistology of a subadult T. horridus reveals major ontogenetic shifts in horn & squamosal growth & novel growth marks
Obuszewski et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Obuszewski et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Using 3D vertebral models and Autobend, this study by Esteban et al shows pinnipeds have highly mobile spines, especially in the lumbar region. Different families reveal distinct flexibility patterns tied to swimming style and land locomotion. anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
January 7, 2026 at 2:30 PM
Using 3D vertebral models and Autobend, this study by Esteban et al shows pinnipeds have highly mobile spines, especially in the lumbar region. Different families reveal distinct flexibility patterns tied to swimming style and land locomotion. anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Miyazato et al have revealed, via μ-CT scans of Belonostomus longirostris skulls from Alberta, fused cranial bones, hidden sensory canals, and features that challenge its placement in Teleostei—reshaping views on aspidorhynchid evolution. anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
January 5, 2026 at 2:30 PM
Miyazato et al have revealed, via μ-CT scans of Belonostomus longirostris skulls from Alberta, fused cranial bones, hidden sensory canals, and features that challenge its placement in Teleostei—reshaping views on aspidorhynchid evolution. anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Start out 2026 with a manuscript by Sahni, tracing how vertebrate paleontology in India rebounded—reshaping ideas on dinosaurs, whale evolution, the India–Asia collision, and migration. A fascinating journey through science, history & discovery! anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
January 3, 2026 at 2:30 PM
Start out 2026 with a manuscript by Sahni, tracing how vertebrate paleontology in India rebounded—reshaping ideas on dinosaurs, whale evolution, the India–Asia collision, and migration. A fascinating journey through science, history & discovery! anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Happy New Year from the AR family! Please enjoy our top 9 article posts from 2025.
1. Dunkelosteus
2. Seeleyosaurus
3. Trucidocynodon
4. Special Issue on paleohistology of pseudosuchians
5. Megantereon
6. Falcarius
7. Basking sharks
8. Dinodontosaurus
9. Opossums
1. Dunkelosteus
2. Seeleyosaurus
3. Trucidocynodon
4. Special Issue on paleohistology of pseudosuchians
5. Megantereon
6. Falcarius
7. Basking sharks
8. Dinodontosaurus
9. Opossums
December 31, 2025 at 12:01 PM
Happy New Year from the AR family! Please enjoy our top 9 article posts from 2025.
1. Dunkelosteus
2. Seeleyosaurus
3. Trucidocynodon
4. Special Issue on paleohistology of pseudosuchians
5. Megantereon
6. Falcarius
7. Basking sharks
8. Dinodontosaurus
9. Opossums
1. Dunkelosteus
2. Seeleyosaurus
3. Trucidocynodon
4. Special Issue on paleohistology of pseudosuchians
5. Megantereon
6. Falcarius
7. Basking sharks
8. Dinodontosaurus
9. Opossums
New study of green iguana (Iguana iguana) reveals notable cranial & axial skeletal variation, including skull shape, atlas neural spine, rib count & 7 caudal vertebra morphotypes—challenging traditional view of uniform tail pattern
🦎Rosa et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
🦎Rosa et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
December 29, 2025 at 12:01 PM
New study of green iguana (Iguana iguana) reveals notable cranial & axial skeletal variation, including skull shape, atlas neural spine, rib count & 7 caudal vertebra morphotypes—challenging traditional view of uniform tail pattern
🦎Rosa et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
🦎Rosa et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
🦖 New histo study on theropod Berthasaura reveals slow growth, periodic LAGs, subadult status & strong inter-element variability—highlighting biases of single-bone age/metabolic inferences & importance of multi-element sampling
Alves de Souza et al anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Alves de Souza et al anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
December 26, 2025 at 12:30 PM
🦖 New histo study on theropod Berthasaura reveals slow growth, periodic LAGs, subadult status & strong inter-element variability—highlighting biases of single-bone age/metabolic inferences & importance of multi-element sampling
Alves de Souza et al anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Alves de Souza et al anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
🦈New SEM study on Carcharhiniformes shark dentition reveals heterodonty and crown variation across families. High-resolution data highlight diagnostic traits & show heterodonty drives diversity of the most speciose shark order
Zanini & Soares: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Zanini & Soares: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
December 24, 2025 at 7:00 PM
🦈New SEM study on Carcharhiniformes shark dentition reveals heterodonty and crown variation across families. High-resolution data highlight diagnostic traits & show heterodonty drives diversity of the most speciose shark order
Zanini & Soares: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Zanini & Soares: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
A first-of-its-kind study of lip microanatomy in 15 primates finds humans stand out: a curved rbicularis oris muscle, separate labial tractors, & fat-rich lips that may enhance fine motor control & support speech evolution
Rotenstreich et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Rotenstreich et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
December 19, 2025 at 12:02 PM
A first-of-its-kind study of lip microanatomy in 15 primates finds humans stand out: a curved rbicularis oris muscle, separate labial tractors, & fat-rich lips that may enhance fine motor control & support speech evolution
Rotenstreich et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Rotenstreich et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
DiceCT lets us study muscles in 3D w/o dissection, but manual segmentation is slow & subjective. Testing XFiber + GoodFibes across 8 mammals shows XFiber matches manual results w/far less effort—promising for comparative muscle studies.
Ratkiewicz et al.:
doi.org/10.1002/ar.7...
Ratkiewicz et al.:
doi.org/10.1002/ar.7...
December 17, 2025 at 12:01 PM
DiceCT lets us study muscles in 3D w/o dissection, but manual segmentation is slow & subjective. Testing XFiber + GoodFibes across 8 mammals shows XFiber matches manual results w/far less effort—promising for comparative muscle studies.
Ratkiewicz et al.:
doi.org/10.1002/ar.7...
Ratkiewicz et al.:
doi.org/10.1002/ar.7...
Softshell turtle evolution is hard to decode. New analyses of 312 specimens show filtering rare & growth-related variation improves phylogeny—but some branches remain fuzzy. Molecular or total-evidence frameworks still needed🐢
Girard & Joyce: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Girard & Joyce: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
December 15, 2025 at 12:01 PM
Softshell turtle evolution is hard to decode. New analyses of 312 specimens show filtering rare & growth-related variation improves phylogeny—but some branches remain fuzzy. Molecular or total-evidence frameworks still needed🐢
Girard & Joyce: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Girard & Joyce: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
🦭A new study by Nihtilä & Laakkonen reveals that Saimaa ringed seals have fewer kidney reniculi than their Baltic relatives, and both have fewer than Arctic ringed seals. Their study also reveals new details of renal artery branching! anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
December 12, 2025 at 1:01 PM
🦭A new study by Nihtilä & Laakkonen reveals that Saimaa ringed seals have fewer kidney reniculi than their Baltic relatives, and both have fewer than Arctic ringed seals. Their study also reveals new details of renal artery branching! anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Our January issue just dropped!
anatomypubs.onlinelibrary.wiley.com/toc/19328494...
🦈Cover article by Estevan Eltink et al. covers morphology & paleoecology of Priohybodus arambourgi, a hybodontiform shark w/serrated teeth from Jurassic of Brazil: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
anatomypubs.onlinelibrary.wiley.com/toc/19328494...
🦈Cover article by Estevan Eltink et al. covers morphology & paleoecology of Priohybodus arambourgi, a hybodontiform shark w/serrated teeth from Jurassic of Brazil: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
December 10, 2025 at 12:01 PM
Our January issue just dropped!
anatomypubs.onlinelibrary.wiley.com/toc/19328494...
🦈Cover article by Estevan Eltink et al. covers morphology & paleoecology of Priohybodus arambourgi, a hybodontiform shark w/serrated teeth from Jurassic of Brazil: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
anatomypubs.onlinelibrary.wiley.com/toc/19328494...
🦈Cover article by Estevan Eltink et al. covers morphology & paleoecology of Priohybodus arambourgi, a hybodontiform shark w/serrated teeth from Jurassic of Brazil: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
A new study by De Ridder et al shows that, once size-scaled, zebras, onagers, and horses share highly comparable architecture—with subtle boosts in distal flexor strength for zebras on rough terrain! Read more at anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
December 9, 2025 at 1:01 PM
A new study by De Ridder et al shows that, once size-scaled, zebras, onagers, and horses share highly comparable architecture—with subtle boosts in distal flexor strength for zebras on rough terrain! Read more at anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
🦴✨ From tree-climbers to diggers, spiny rats show how the first neck vertebrae track lifestyle. A new morphometric study by da Silva Netto et al reveals locomotion leaves a stronger mark than size—and even helps ID the habits of extinct species. anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
December 7, 2025 at 2:30 PM
🦴✨ From tree-climbers to diggers, spiny rats show how the first neck vertebrae track lifestyle. A new morphometric study by da Silva Netto et al reveals locomotion leaves a stronger mark than size—and even helps ID the habits of extinct species. anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
New phylogenetic work unifies fossil and living ray-finned fishes using anatomical ontologies, revealing clearer origins of Actinopterygii. Analyses refine the positions of key Paleozoic–Mesozoic groups.
Study by Jack Stack:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Study by Jack Stack:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
December 5, 2025 at 1:03 PM
New phylogenetic work unifies fossil and living ray-finned fishes using anatomical ontologies, revealing clearer origins of Actinopterygii. Analyses refine the positions of key Paleozoic–Mesozoic groups.
Study by Jack Stack:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Study by Jack Stack:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
New research on juvenile Redondasaurus fossils from Chinle Fm. reveals that immature phytosaurs show a mosaic of traits seen in both early and late-diverging species. Links b/w growth & morphological evolution in Phytosauria.
Goldsmith & Stocker:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Goldsmith & Stocker:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
December 3, 2025 at 1:01 PM
New research on juvenile Redondasaurus fossils from Chinle Fm. reveals that immature phytosaurs show a mosaic of traits seen in both early and late-diverging species. Links b/w growth & morphological evolution in Phytosauria.
Goldsmith & Stocker:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Goldsmith & Stocker:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
🐱🦁 Join us Dec 10 (12–1pm ET) for a webinar building on our sabertooth anatomy special issue! Hear early-career researchers discuss Smilodon ontogeny, bite force + gape, and new insights into Homotherium. Talks by Narimane Chatar, Ashley Deutsch & John Moretti.
Register: anatomy.org/ANATOMY/Meet...
Register: anatomy.org/ANATOMY/Meet...
December 2, 2025 at 11:01 AM
🐱🦁 Join us Dec 10 (12–1pm ET) for a webinar building on our sabertooth anatomy special issue! Hear early-career researchers discuss Smilodon ontogeny, bite force + gape, and new insights into Homotherium. Talks by Narimane Chatar, Ashley Deutsch & John Moretti.
Register: anatomy.org/ANATOMY/Meet...
Register: anatomy.org/ANATOMY/Meet...
New lessons from a dinosaur mummy from Canada with a soft-tissue crest; scarred skin, slow burial, balloon-headed hadrosaurs, and a new species?
Research by Henry Sharpe et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Research by Henry Sharpe et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
December 1, 2025 at 12:01 PM
New lessons from a dinosaur mummy from Canada with a soft-tissue crest; scarred skin, slow burial, balloon-headed hadrosaurs, and a new species?
Research by Henry Sharpe et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Research by Henry Sharpe et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
New study by Veshchitskii et al provides a first, detailed map of cervical motoneuron pools in Acomys cahirinus: Fast Blue tracing reveals precise C3–T1 positions for forelimb muscle control, outlining this species’ spinal motor organization. anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
November 29, 2025 at 1:01 PM
New study by Veshchitskii et al provides a first, detailed map of cervical motoneuron pools in Acomys cahirinus: Fast Blue tracing reveals precise C3–T1 positions for forelimb muscle control, outlining this species’ spinal motor organization. anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
🦃🍽️ This Thanksgiving, your gut barrier is working harder than the chef. A new review by Mak et al shows how alcohol and inflammation weaken intestinal junctions—leading to “leaky gut,” endotoxemia, and widespread metabolic trouble. Read more: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
November 27, 2025 at 1:02 PM
🦃🍽️ This Thanksgiving, your gut barrier is working harder than the chef. A new review by Mak et al shows how alcohol and inflammation weaken intestinal junctions—leading to “leaky gut,” endotoxemia, and widespread metabolic trouble. Read more: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
🐊 Largest survey of skeletal disease in living crocodilians! Nearly half showed osteopathologies, w/trauma most common. Skulls were hit hardest, and non-traumatic issues like inflammation and joint degeneration rose w/size & age.
Cornille et al.:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Cornille et al.:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
November 25, 2025 at 11:30 AM
🐊 Largest survey of skeletal disease in living crocodilians! Nearly half showed osteopathologies, w/trauma most common. Skulls were hit hardest, and non-traumatic issues like inflammation and joint degeneration rose w/size & age.
Cornille et al.:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Cornille et al.:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
🦴 New study reveals how teen growth and puberty shape the femur from inside out.
Analyzing medieval femora, researchers found sex-specific “medullary contractions” during adolescence—especially in females & varying by region
Muñoz-Guarinos et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Analyzing medieval femora, researchers found sex-specific “medullary contractions” during adolescence—especially in females & varying by region
Muñoz-Guarinos et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
November 23, 2025 at 11:30 AM
🦴 New study reveals how teen growth and puberty shape the femur from inside out.
Analyzing medieval femora, researchers found sex-specific “medullary contractions” during adolescence—especially in females & varying by region
Muñoz-Guarinos et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Analyzing medieval femora, researchers found sex-specific “medullary contractions” during adolescence—especially in females & varying by region
Muñoz-Guarinos et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
A new analysis of Dunkleosteus terrelli reveals its massive jaws were far more cartilage-rich than once thought, reshaping ideas about muscle layout, bite mechanics & feeding style. Time to rethink this Devonian apex predator.
Engelman et al.:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Engelman et al.:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
November 21, 2025 at 2:45 PM
A new analysis of Dunkleosteus terrelli reveals its massive jaws were far more cartilage-rich than once thought, reshaping ideas about muscle layout, bite mechanics & feeding style. Time to rethink this Devonian apex predator.
Engelman et al.:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Engelman et al.:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
First detailed histology of ornithocheiriform pterosaur tooth from Brazil’s Crato Formation! Thin enamel, rapid growth & ultra-fast tooth formation show pterosaurs had quickest dental development among major reptile groups
Tito Aureliano et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Tito Aureliano et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
November 21, 2025 at 12:02 PM
First detailed histology of ornithocheiriform pterosaur tooth from Brazil’s Crato Formation! Thin enamel, rapid growth & ultra-fast tooth formation show pterosaurs had quickest dental development among major reptile groups
Tito Aureliano et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Tito Aureliano et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...