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/
Lambeosaurine crests! New work compares internal nasal anatomy of adult Corythosaurus & Lambeosaurus vs juveniles & Hypacrosaurus. Strong genus-level differences, but surprisingly little variation between Corythosaurus species.
Dudgeon et al.:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Dudgeon et al.:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
January 30, 2026 at 11:01 AM
Lambeosaurine crests! New work compares internal nasal anatomy of adult Corythosaurus & Lambeosaurus vs juveniles & Hypacrosaurus. Strong genus-level differences, but surprisingly little variation between Corythosaurus species.
Dudgeon et al.:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Dudgeon et al.:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
When scaled at equalized forces and skull lengths, tyrannosauroids had lower stress magnitudes than non-tyrannosauroid theropods, indicative of specialized predation capability.
New research by Evan Johnson-Ransom et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
New research by Evan Johnson-Ransom et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
January 29, 2026 at 11:02 AM
When scaled at equalized forces and skull lengths, tyrannosauroids had lower stress magnitudes than non-tyrannosauroid theropods, indicative of specialized predation capability.
New research by Evan Johnson-Ransom et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
New research by Evan Johnson-Ransom et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Postcranial fossils from the site of Drimolen in the Cradle of Humankind in South Africa provide further insights into hominin paleobiology at approximately 2.0 million years ago!
New study by Caley M. Orr et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
New study by Caley M. Orr et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
January 28, 2026 at 11:00 AM
Postcranial fossils from the site of Drimolen in the Cradle of Humankind in South Africa provide further insights into hominin paleobiology at approximately 2.0 million years ago!
New study by Caley M. Orr et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
New study by Caley M. Orr et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Reposted by The Anatomical Record
🚨NEW PAPER 🚨 An overview of the postcranial osteology of #caecilians (Gymnophiona, Lissamphibia), published in The Anatomical Record @anatrecord.bsky.social
anatomypubs.onlinelibrary.wiley.com/doi/full/10....
anatomypubs.onlinelibrary.wiley.com/doi/full/10....
An overview of the postcranial osteology of caecilians (Gymnophiona, Lissamphibia)
Caecilians comprise a relatively small (~220 species) group (Gymnophiona) of snake-like or worm-like, mostly tropical amphibians. Most adult caecilians are fossorial, although some species may live i....
anatomypubs.onlinelibrary.wiley.com
January 26, 2026 at 5:47 AM
🚨NEW PAPER 🚨 An overview of the postcranial osteology of #caecilians (Gymnophiona, Lissamphibia), published in The Anatomical Record @anatrecord.bsky.social
anatomypubs.onlinelibrary.wiley.com/doi/full/10....
anatomypubs.onlinelibrary.wiley.com/doi/full/10....
Terror birds (Phorusrhacidae) ruled South America for ~40 Ma, but their growth was a mystery. New hindlimb osteohistology shows rapid, uninterrupted growth, heavy remodeling & cursorial stress in Oligocene Andrewsornis & Physornis.
Dreyer et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Dreyer et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
January 27, 2026 at 12:00 PM
Terror birds (Phorusrhacidae) ruled South America for ~40 Ma, but their growth was a mystery. New hindlimb osteohistology shows rapid, uninterrupted growth, heavy remodeling & cursorial stress in Oligocene Andrewsornis & Physornis.
Dreyer et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Dreyer et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Liver lobation and vascular pathways in red-eared sliders reveal multiple hepatic inflow and outflow routes. This complex vasculature may help maintain stable hemodynamics despite coelomic pressure from the shell. Manuscript by Kasamatsu et al: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
January 25, 2026 at 2:01 PM
Liver lobation and vascular pathways in red-eared sliders reveal multiple hepatic inflow and outflow routes. This complex vasculature may help maintain stable hemodynamics despite coelomic pressure from the shell. Manuscript by Kasamatsu et al: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Reposted by The Anatomical Record
A partial skeleton dating back more than two million years is the most complete yet of Homo habilis, one of the earliest known species in our genus
This is the most complete skeleton yet of our ancestor Homo habilis
A partial skeleton dating back more than two million years is the most complete yet of Homo habilis, one of the earliest known species in our genus
www.scientificamerican.com
January 23, 2026 at 4:17 PM
A partial skeleton dating back more than two million years is the most complete yet of Homo habilis, one of the earliest known species in our genus
Taylor et al present a refined Alcian blue + Alizarin red clearing and staining protocol optimized for large vertebrate specimens. Works on adult chickens and late-stage emu embryos, no trypsin needed, best on fresh frozen tissue! Check it out! anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
January 22, 2026 at 2:02 PM
Taylor et al present a refined Alcian blue + Alizarin red clearing and staining protocol optimized for large vertebrate specimens. Works on adult chickens and late-stage emu embryos, no trypsin needed, best on fresh frozen tissue! Check it out! anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
🦈 New Jurassic shark! Isolated teeth from Aliança Fm Brazil reveal new species of Parvodus, expanding genus temporally & shedding light on lonchidiid evolution, paleobiogeography & ancient lacustrine ecosystems
de Souza Ribeiro & Gallo de França: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
de Souza Ribeiro & Gallo de França: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
January 19, 2026 at 12:02 PM
🦈 New Jurassic shark! Isolated teeth from Aliança Fm Brazil reveal new species of Parvodus, expanding genus temporally & shedding light on lonchidiid evolution, paleobiogeography & ancient lacustrine ecosystems
de Souza Ribeiro & Gallo de França: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
de Souza Ribeiro & Gallo de França: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
🦕A nearly complete titanosaur axis from Upper Cretaceous São José do Rio Preto Fm reveals rare cervical data, complex internal pneumaticity & affinities w/colossosaurians—highlighting overlooked phylogenetic value of axial elements
Navarro et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Navarro et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
January 16, 2026 at 11:01 AM
🦕A nearly complete titanosaur axis from Upper Cretaceous São José do Rio Preto Fm reveals rare cervical data, complex internal pneumaticity & affinities w/colossosaurians—highlighting overlooked phylogenetic value of axial elements
Navarro et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Navarro et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Join us Jan 21 (12–1pm EST) for an exciting webinar on pelvic evolution and bipedalism by Dr. Terence Capellini (Harvard University).
Free registration here:
anatomy.org/ANATOMY/Meet...
Free registration here:
anatomy.org/ANATOMY/Meet...
January 15, 2026 at 5:30 PM
Join us Jan 21 (12–1pm EST) for an exciting webinar on pelvic evolution and bipedalism by Dr. Terence Capellini (Harvard University).
Free registration here:
anatomy.org/ANATOMY/Meet...
Free registration here:
anatomy.org/ANATOMY/Meet...
Our latest issue is now available!
anatomypubs.onlinelibrary.wiley.com/toc/19328494...
The cover article by Deanna Goldstein et al. reports details on whole-bone shape of hominoid manual proximal phalanges: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
anatomypubs.onlinelibrary.wiley.com/toc/19328494...
The cover article by Deanna Goldstein et al. reports details on whole-bone shape of hominoid manual proximal phalanges: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
January 15, 2026 at 12:00 PM
Our latest issue is now available!
anatomypubs.onlinelibrary.wiley.com/toc/19328494...
The cover article by Deanna Goldstein et al. reports details on whole-bone shape of hominoid manual proximal phalanges: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
anatomypubs.onlinelibrary.wiley.com/toc/19328494...
The cover article by Deanna Goldstein et al. reports details on whole-bone shape of hominoid manual proximal phalanges: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Excellent write-up in Science by Ann Gibbons of the exciting new Ileret Homo material: ]
www.science.org/content/arti...
Check out the original AR article by Frederick Grine and colleagues here:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
www.science.org/content/arti...
Check out the original AR article by Frederick Grine and colleagues here:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
January 13, 2026 at 2:10 PM
Excellent write-up in Science by Ann Gibbons of the exciting new Ileret Homo material: ]
www.science.org/content/arti...
Check out the original AR article by Frederick Grine and colleagues here:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
www.science.org/content/arti...
Check out the original AR article by Frederick Grine and colleagues here:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
KNM-ER 64061, most complete Homo habilis skeleton yet (Koobi Fora) shows primitive limb proportions: long forearms, thick cortices, small body mass & ~160 cm stature. Upper limbs like early Homo, but proportions differ from H. erectus
Grine et al anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Grine et al anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
January 13, 2026 at 11:15 AM
KNM-ER 64061, most complete Homo habilis skeleton yet (Koobi Fora) shows primitive limb proportions: long forearms, thick cortices, small body mass & ~160 cm stature. Upper limbs like early Homo, but proportions differ from H. erectus
Grine et al anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Grine et al anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Brachycephalic rabbits are often linked to poor welfare—esp dental disease. New review shows early incisor malocclusion stems from congenital brachygnathia, while later dental disease isn’t tied to brachycephaly🐰🦷
Cressy et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Cressy et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
January 11, 2026 at 12:00 PM
Brachycephalic rabbits are often linked to poor welfare—esp dental disease. New review shows early incisor malocclusion stems from congenital brachygnathia, while later dental disease isn’t tied to brachycephaly🐰🦷
Cressy et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Cressy et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
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...