You're looking at a Rainbow Tripod Fish (genus Bathypterois) observed on a blackwater dive near Cozumel, MX.
This species demonstrates "ontogenetic vertical migration": young of this species mimic jellyfish near the surface, but descend in depth as they age.
(📷: Frida Yolotzin, Blackwater Cozumel)
This species demonstrates "ontogenetic vertical migration": young of this species mimic jellyfish near the surface, but descend in depth as they age.
(📷: Frida Yolotzin, Blackwater Cozumel)
May 23, 2026 at 5:28 PM
You're looking at a Rainbow Tripod Fish (genus Bathypterois) observed on a blackwater dive near Cozumel, MX.
This species demonstrates "ontogenetic vertical migration": young of this species mimic jellyfish near the surface, but descend in depth as they age.
(📷: Frida Yolotzin, Blackwater Cozumel)
This species demonstrates "ontogenetic vertical migration": young of this species mimic jellyfish near the surface, but descend in depth as they age.
(📷: Frida Yolotzin, Blackwater Cozumel)
Was wondering why the online paleoart community is obsessed with proportions & ratios on dinosaur drawings (despite taphonomic distortion, missing data & unknown ontogenetic trajectories and intraspecies variation). Is it because of popularisation of very Western, male & rather wrong Loomis method?
August 6, 2025 at 3:23 PM
Was wondering why the online paleoart community is obsessed with proportions & ratios on dinosaur drawings (despite taphonomic distortion, missing data & unknown ontogenetic trajectories and intraspecies variation). Is it because of popularisation of very Western, male & rather wrong Loomis method?
J.T. Voris et al. 2025
Ontogenetic Changes in Endocranial Anatomy in Gorgosaurus libratus (Theropoda: Tyrannosauridae) Provide Insight Into the Evolution of the Tyrannosauroid Endocranium
Journal of Comparative Neurology 533: e70056
onlinelibrary.wiley.com/doi/10.1002/...
Ontogenetic Changes in Endocranial Anatomy in Gorgosaurus libratus (Theropoda: Tyrannosauridae) Provide Insight Into the Evolution of the Tyrannosauroid Endocranium
Journal of Comparative Neurology 533: e70056
onlinelibrary.wiley.com/doi/10.1002/...
Ontogenetic Changes in Endocranial Anatomy in Gorgosaurus libratus (Theropoda: Tyrannosauridae) Provide Insight Into the Evolution of the Tyrannosauroid Endocranium
Changes through growth (ontogenetic) in the braincase of the eutyrannosaurian tyrannosauroid Gorgosaurus libratus are discussed. Most notably, brain cavity endocasts of immature Gorgosaurus are found....
doi.org
April 28, 2025 at 3:25 PM
J.T. Voris et al. 2025
Ontogenetic Changes in Endocranial Anatomy in Gorgosaurus libratus (Theropoda: Tyrannosauridae) Provide Insight Into the Evolution of the Tyrannosauroid Endocranium
Journal of Comparative Neurology 533: e70056
onlinelibrary.wiley.com/doi/10.1002/...
Ontogenetic Changes in Endocranial Anatomy in Gorgosaurus libratus (Theropoda: Tyrannosauridae) Provide Insight Into the Evolution of the Tyrannosauroid Endocranium
Journal of Comparative Neurology 533: e70056
onlinelibrary.wiley.com/doi/10.1002/...
with enthusiasm and ontogenetic strength: go loins
October 5, 2025 at 8:23 PM
with enthusiasm and ontogenetic strength: go loins
Ontogenetic and spatial variation in the trophic ecology of the shortfin mako shark (Isurus oxyrinchus) in temperate eastern Australia 🦑🧪🐟🦈 onlinelibrary.wiley.com/doi/10.1111/...
October 2, 2026 at 4:18 PM
Ontogenetic and spatial variation in the trophic ecology of the shortfin mako shark (Isurus oxyrinchus) in temperate eastern Australia 🦑🧪🐟🦈 onlinelibrary.wiley.com/doi/10.1111/...
Ontogenetic dietary partitioning in a Triassic sauropterygian: implications from a new juvenile specimen of Brevicaudosaurus jiyangshanensis (Reptilia: Diapsida) url: academic.oup.com/zoolinnean/a...
Ontogenetic dietary partitioning in a Triassic sauropterygian: implications from a new juvenile specimen of Brevicaudosaurus jiyangshanensis (Reptilia: Diapsida)
Abstract. During the first 10 million years of the Triassic, sauropterygians diversified rapidly into a variety of marine predatory niches. Adults of the l
academic.oup.com
September 16, 2025 at 6:19 PM
Ontogenetic dietary partitioning in a Triassic sauropterygian: implications from a new juvenile specimen of Brevicaudosaurus jiyangshanensis (Reptilia: Diapsida) url: academic.oup.com/zoolinnean/a...
Always love a moving ontogenetic event
August 29, 2023 at 1:06 AM
Always love a moving ontogenetic event
de Farias, B.D.M. et al. (2024). The first ontogenetic model for non-crocodylomorph loricatans, based on osteohistology of the ontogenetic series of Prestosuchus chiniquensis from the Middle Triassic of Brazil. The Anatomical Record, 1–31. doi.org/10.1002/ar.2...
The first ontogenetic model for non‐crocodylomorph loricatans, based on osteohistology of the ontogenetic series of Prestosuchus chiniquensis from the Middle Triassic of Brazil
Prestosuchus chiniquensis is an iconic non-crocodylomorph loricatan from the Brazilian Triassic beds and the best-known taxon, represented by several specimens. The completeness and preservation of i...
doi.org
November 20, 2024 at 4:31 PM
de Farias, B.D.M. et al. (2024). The first ontogenetic model for non-crocodylomorph loricatans, based on osteohistology of the ontogenetic series of Prestosuchus chiniquensis from the Middle Triassic of Brazil. The Anatomical Record, 1–31. doi.org/10.1002/ar.2...
Language learning as ontogenetic adaptation
Opinion by Manuel Bohn (@elmanubohn.bsky.social) & Marisa Casillas
tinyurl.com/48pdbv5b
Opinion by Manuel Bohn (@elmanubohn.bsky.social) & Marisa Casillas
tinyurl.com/48pdbv5b
February 19, 2026 at 11:55 PM
Language learning as ontogenetic adaptation
Opinion by Manuel Bohn (@elmanubohn.bsky.social) & Marisa Casillas
tinyurl.com/48pdbv5b
Opinion by Manuel Bohn (@elmanubohn.bsky.social) & Marisa Casillas
tinyurl.com/48pdbv5b
Direct evidence for the evolution of developmental patterns of the Chengjiang ecdysozoan worm Cricocosmia. #Cambrian #Fossil #EvoDevo
onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com/doi/10.1111/...
The First Quantitative Evidence of Ontogenetic Growth in the Early Cambrian Ecdysozoan Worm <i>Cricocosmia jinningensis</i> Reveals the Earliest Energy Reallocation
We report the first ontogenetic information for the compression-preserved Cambrian ecdysozoan worm Cricocosmia jinningensis. Its mosaic growth strategy unifies panarthropod and priapulid developmenta...
onlinelibrary.wiley.com
September 29, 2026 at 1:42 PM
Direct evidence for the evolution of developmental patterns of the Chengjiang ecdysozoan worm Cricocosmia. #Cambrian #Fossil #EvoDevo
onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com/doi/10.1111/...
Ziheng Zhu, Xi Yao, Wenjie Zheng, Xing Xu, Cranial osteology and ontogenetic variation of the Late Cretaceous ankylosaurid dinosaur Pinacosaurus grangeri, Zoological Journal of the Linnean Society, Volume 207, Issue 2, June 2026, zlag060, doi.org/10.1093/zool...
It's finally out now!!!
It's finally out now!!!
June 1, 2026 at 10:20 AM
Ziheng Zhu, Xi Yao, Wenjie Zheng, Xing Xu, Cranial osteology and ontogenetic variation of the Late Cretaceous ankylosaurid dinosaur Pinacosaurus grangeri, Zoological Journal of the Linnean Society, Volume 207, Issue 2, June 2026, zlag060, doi.org/10.1093/zool...
It's finally out now!!!
It's finally out now!!!
Cranial osteology and ontogenetic variation of the Late Cretaceous ankylosaurid dinosaur Pinacosaurus grangeri academic.oup.com/zoolinnean/a...
Cranial osteology and ontogenetic variation of the Late Cretaceous ankylosaurid dinosaur Pinacosaurus grangeri
Abstract. Pinacosaurus grangeri is among the best-known ankylosaurids from the Late Cretaceous of Asia, yet most of the available information is based on j
academic.oup.com
June 1, 2026 at 1:10 PM
Cranial osteology and ontogenetic variation of the Late Cretaceous ankylosaurid dinosaur Pinacosaurus grangeri academic.oup.com/zoolinnean/a...
Repair and regeneration across the lifespan: an ontogenetic perspective
www.frontiersin.org/journals/agi...
www.frontiersin.org/journals/agi...
Frontiers | Repair and regeneration across the lifespan: an ontogenetic perspective
The capacity for tissue repair and regeneration undergoes a profound and progressive decline across the human lifespan, representing a fundamental driver of ...
www.frontiersin.org
September 26, 2026 at 11:24 AM
Repair and regeneration across the lifespan: an ontogenetic perspective
www.frontiersin.org/journals/agi...
www.frontiersin.org/journals/agi...
We just published the first study showing that a bird-of-prey goes through an ontogenetic window of exploratory play.
Young goshawks look like young cheetahs when tossing pine cones into the air, chasing after them.
Just published in Animal Behaviour:
www.sciencedirect.com/science/arti...
1/4
Young goshawks look like young cheetahs when tossing pine cones into the air, chasing after them.
Just published in Animal Behaviour:
www.sciencedirect.com/science/arti...
1/4
September 23, 2026 at 2:39 PM
We just published the first study showing that a bird-of-prey goes through an ontogenetic window of exploratory play.
Young goshawks look like young cheetahs when tossing pine cones into the air, chasing after them.
Just published in Animal Behaviour:
www.sciencedirect.com/science/arti...
1/4
Young goshawks look like young cheetahs when tossing pine cones into the air, chasing after them.
Just published in Animal Behaviour:
www.sciencedirect.com/science/arti...
1/4
Shi et al. (2026-09, Integrative Zoology)
The First Quantitative Evidence of Ontogenetic Growth in the Early Cambrian Ecdysozoan Worm Cricocosmia jinningensis Reveals the Earliest Energy Reallocation
The First Quantitative Evidence of Ontogenetic Growth in the Early Cambrian Ecdysozoan Worm Cricocosmia jinningensis Reveals the Earliest Energy Reallocation
The First Quantitative Evidence of Ontogenetic Growth in the Early Cambrian Ecdysozoan Worm <i>Cricocosmia jinningensis</i> Reveals the Earliest Energy Reallocation
We report the first ontogenetic information for the compression-preserved Cambrian ecdysozoan worm Cricocosmia jinningensis. Its mosaic growth strategy unifies panarthropod and priapulid developmenta....
doi.org
September 25, 2026 at 9:46 AM
Shi et al. (2026-09, Integrative Zoology)
The First Quantitative Evidence of Ontogenetic Growth in the Early Cambrian Ecdysozoan Worm Cricocosmia jinningensis Reveals the Earliest Energy Reallocation
The First Quantitative Evidence of Ontogenetic Growth in the Early Cambrian Ecdysozoan Worm Cricocosmia jinningensis Reveals the Earliest Energy Reallocation
Ontogenetic shifts in trophic ecology and habitat use for two hammerhead shark species in the Atlantic Ocean doi.org/10.3354/meps
Ontogenetic shifts in trophic ecology and habitat use for two hammerhead shark species in the Atlantic Ocean
doi.org
July 28, 2026 at 7:03 PM
Ontogenetic shifts in trophic ecology and habitat use for two hammerhead shark species in the Atlantic Ocean doi.org/10.3354/meps
After a mass extinction, things tend to become smaller. Paleontologists call that the "Lilliput Effect". That is a pattern, but what is the process? It could be ontogenetic due to environmental stress, but it could also be selective sorting. 🧪⚒️
pubs.geoscienceworld.org/paleosoc/pal...
pubs.geoscienceworld.org/paleosoc/pal...
March 16, 2025 at 3:45 PM
After a mass extinction, things tend to become smaller. Paleontologists call that the "Lilliput Effect". That is a pattern, but what is the process? It could be ontogenetic due to environmental stress, but it could also be selective sorting. 🧪⚒️
pubs.geoscienceworld.org/paleosoc/pal...
pubs.geoscienceworld.org/paleosoc/pal...
Published last week in our journal: Individual, ontogenetic, and phylogenetic variation in the dentition of hadrosaurids (Iguanodontia: Ornithischia) 🦷 🦖
December 2, 2024 at 11:00 AM
Published last week in our journal: Individual, ontogenetic, and phylogenetic variation in the dentition of hadrosaurids (Iguanodontia: Ornithischia) 🦷 🦖
🧪 New paper out! Growing up, wall lizards undergo a UV-visible “awkward phase” (who doesn’t?) that we can’t see—but they can. These ontogenetic color changes may mediate juvenile–adult interactions by delaying the onset of adult social signals. doi.org/10.1002/jez.... #colsci #lizard #ontogeny
Cryptic Ontogenetic Changes in the Ventral Coloration of a Color Polymorphic Wall Lizard (Podarcis muralis)
Wall lizards' ventral coloration undergoes cryptic ontogenetic color changes invisible without UV vision. We tracked wall lizards from hatching to one year of age. Spectrophotometry and visual modeli...
doi.org
September 29, 2025 at 8:42 AM
🧪 New paper out! Growing up, wall lizards undergo a UV-visible “awkward phase” (who doesn’t?) that we can’t see—but they can. These ontogenetic color changes may mediate juvenile–adult interactions by delaying the onset of adult social signals. doi.org/10.1002/jez.... #colsci #lizard #ontogeny
Nice depiction of Corallus caninus going through ontogenetic color change.
July 28, 2026 at 9:53 PM
Nice depiction of Corallus caninus going through ontogenetic color change.
Chan-Gyu Yun and Łukasz Czepiński (2025)
Craniomandibular ontogeny of protoceratopsid dinosaurs indicates the possibility of an ontogenetic dietary shift
Lethaia 58(3): 1–17
doi: doi.org/10.18261/let...
www.scup.com/doi/10.18261...
Craniomandibular ontogeny of protoceratopsid dinosaurs indicates the possibility of an ontogenetic dietary shift
Lethaia 58(3): 1–17
doi: doi.org/10.18261/let...
www.scup.com/doi/10.18261...
Craniomandibular ontogeny of protoceratopsid dinosaurs indicates the possibility of an ontogenetic dietary shift
It is widely assumed that non-avian dinosaurs changed their diet and niche as they
grew, as do many modern vertebrates. However, studies that have rigorously investigated
such possibility have been sp...
doi.org
September 3, 2025 at 8:12 PM
Chan-Gyu Yun and Łukasz Czepiński (2025)
Craniomandibular ontogeny of protoceratopsid dinosaurs indicates the possibility of an ontogenetic dietary shift
Lethaia 58(3): 1–17
doi: doi.org/10.18261/let...
www.scup.com/doi/10.18261...
Craniomandibular ontogeny of protoceratopsid dinosaurs indicates the possibility of an ontogenetic dietary shift
Lethaia 58(3): 1–17
doi: doi.org/10.18261/let...
www.scup.com/doi/10.18261...
A post-hatchling rhynchosaur from the Brazilian Triassic and the ontogenetic development of key characters within Hyperodapedontinae: Journal of Systematic Palaeontology: Vol 23 , No 1 - Get Access www.tandfonline.com/doi/full/10....
A post-hatchling rhynchosaur from the Brazilian Triassic and the ontogenetic development of key characters within Hyperodapedontinae
Hyperodapedontinae is the most abundant and diverse clade of Rhynchosauridae, an iconic group of Triassic archosauromorphs, easily recognizable by their maxillomandibular apparatus, formed by a gro...
www.tandfonline.com
December 11, 2025 at 6:38 PM
A post-hatchling rhynchosaur from the Brazilian Triassic and the ontogenetic development of key characters within Hyperodapedontinae: Journal of Systematic Palaeontology: Vol 23 , No 1 - Get Access www.tandfonline.com/doi/full/10....
“Traits” are central units of biological analysis—but how should they be individuated, and relative to which ontogenetic frame of reference? In my new paper, I argue that answering this isn’t easy—and matters more than it seems. 📃👇 link.springer.com/article/10.1... #philsci #HPBio #evosky #evodevo
July 18, 2025 at 6:33 PM
“Traits” are central units of biological analysis—but how should they be individuated, and relative to which ontogenetic frame of reference? In my new paper, I argue that answering this isn’t easy—and matters more than it seems. 📃👇 link.springer.com/article/10.1... #philsci #HPBio #evosky #evodevo
Some 🧪 thoughts:
💀 the skull shows some differences to the adult skull shape (especially in the zygomatic region).
Did Homotherium show ontogenetic allometry in its skull?
I can't wait to see geometric morphometric analysis!
💀 the skull shows some differences to the adult skull shape (especially in the zygomatic region).
Did Homotherium show ontogenetic allometry in its skull?
I can't wait to see geometric morphometric analysis!
November 25, 2024 at 7:17 PM
Some 🧪 thoughts:
💀 the skull shows some differences to the adult skull shape (especially in the zygomatic region).
Did Homotherium show ontogenetic allometry in its skull?
I can't wait to see geometric morphometric analysis!
💀 the skull shows some differences to the adult skull shape (especially in the zygomatic region).
Did Homotherium show ontogenetic allometry in its skull?
I can't wait to see geometric morphometric analysis!
I've been fascinated by the 1989 work of F. Rothen & A.-J. Koch: "Phyllotaxis or the properties of spiral lattices. - II. Packing of circles along logarithmic spirals" but I'm finding the math difficult to follow for the circle packing. I did learn how to create their spiral lattices. #MathArt
July 27, 2025 at 7:45 AM
I've been fascinated by the 1989 work of F. Rothen & A.-J. Koch: "Phyllotaxis or the properties of spiral lattices. - II. Packing of circles along logarithmic spirals" but I'm finding the math difficult to follow for the circle packing. I did learn how to create their spiral lattices. #MathArt