Lightnews — Scholar-powered news

Reposted by ISPH 2025

GRICA-BIOpast @gricabiopastudc.bsky.social · Jun 26

Our #BIOpast team was there! Huge thanks to the organizers for such an amazing experience 🥳 #PaleoGalicia #Paleomeeting

ISPH 2025 @isph2025.bsky.social · Jun 26

#isph2025 group photo!

1 1

ISPH 2025 @isph2025.bsky.social · Jun 26

#isph2025 group photo!

1 3

Reposted by ISPH 2025

Dr Alice Clement @draliceclement.bsky.social · Jun 23

Congratulations to M. Ramon Fritzen, PhD candidate at Flinders University, for winning 2nd place in the @isph2025.bsky.social image competition using a @ansto.bsky.social MCT scan of (Gogo) fossil lungfish bone!

ISPH 2025 @isph2025.bsky.social · Jun 21

Marcos Ramon Fritzen won joint 2nd place of our palaeohistology image competition with his image titled "A Deep Time Genomic Window: 3D Visualization of Fossil Lungfish Osteocyte Lacunae" #isph2025

1 3

Reposted by ISPH 2025

Anusuya Chinsamy-Turan @palaeo-prof.bsky.social · Jun 20

@isph2025.bsky.social Thanks to @justyna Miszkiewicz and team for a fabulous ISPH meeting! @paleohistology

3 5

Reposted by ISPH 2025

Bone remodelling through time @boneremodelling.bsky.social · Jun 22

Congratulations to our postdoc @bonehistopath.bsky.social for winning 2nd place of the #isph2025 image competition!

ISPH 2025 @isph2025.bsky.social · Jun 21

@bonehistopath.bsky.social won joint 2nd place of our palaeohistology image competition with her image titled "Desert Landscape" #isph2025

1 2

ISPH 2025 @isph2025.bsky.social · Jun 22

Winners of our palaeohistology image competition #isph2025

1st place: Professor Tim Bromage
Joint 2nd: @bonehistopath.bsky.social & Marcos Ramon Fritzen

4

ISPH 2025 @isph2025.bsky.social · Jun 21

It marks a methodological shift from traditional descriptive histology to a quantitative and predictive approach that connects fossil microstructure with the genomic history of vertebrates.

ISPH 2025 @isph2025.bsky.social · Jun 21

As part of a growing digital dataset, this reconstruction contributes to identifying evolutionary trends in lungfishes through time.

1 1

ISPH 2025 @isph2025.bsky.social · Jun 21

Rather than focusing solely on bone morphology, it enables the quantification of cellular features as big data, allowing statistical analysis and observation of trends in volume and shape variation.

1

ISPH 2025 @isph2025.bsky.social · Jun 21

This work highlights the integration of high-resolution imaging, artificial intelligence segmentation, and large-scale data generation in palaeontology.

1

ISPH 2025 @isph2025.bsky.social · Jun 21

Applying this principle to fossil taxa offers new insight into genome evolution in early sarcopterygians, linking histological structures to deep-time genomic patterns.

1

ISPH 2025 @isph2025.bsky.social · Jun 21

Using a deep learning-based segmentation, individual osteocyte lacunae were digitally isolated from fossilized bone in unprecedented detail. Osteocyte lacuna volume is a recognized proxy for genome size in living vertebrates.

1

ISPH 2025 @isph2025.bsky.social · Jun 21

This image presents the first 3D visualization of osteocyte lacunae in a 382 million-year-old lungfish from Australia, Chirodipterus australis, scanned at ANSTO with a voxel size of 0.71 microns.

1

ISPH 2025 @isph2025.bsky.social · Jun 21

Marcos Ramon Fritzen won joint 2nd place of our palaeohistology image competition with his image titled "A Deep Time Genomic Window: 3D Visualization of Fossil Lungfish Osteocyte Lacunae" #isph2025

1 4

ISPH 2025 @isph2025.bsky.social · Jun 21

This image captures a fleeting moment in that ongoing war--a testament to both the resilience and vulnerability of the human body.

ISPH 2025 @isph2025.bsky.social · Jun 21

Under the lens of confocal laser scanning microscopy, this microscopic battlefield is revealed in striking detail: a dry, hostile landscape where infection and healing vie for control. Will the bone recover, or will the pathogens prevail?

1

ISPH 2025 @isph2025.bsky.social · Jun 21

Pits, hollows, mountains, and cliffs--not features of an ancient desert, but signs of the body’s struggle against disease. Infected and inflamed, bone becomes a dynamic terrain, reshaped by periosteal growth as the body fights to repair itself.

1

ISPH 2025 @isph2025.bsky.social · Jun 21

@bonehistopath.bsky.social won joint 2nd place of our palaeohistology image competition with her image titled "Desert Landscape" #isph2025

1 4

ISPH 2025 @isph2025.bsky.social · Jun 21

Preferred orientations inform on the nature of forces encountered in habitual use of Lucy’s femur in life. A montage of the entire cross section acquired this way revealed a pattern of preferred orientations that are consistent with the loading history of a bipedal human. Field width 600 μm.

ISPH 2025 @isph2025.bsky.social · Jun 21

In this real color image, green represents collagen oriented perpendicular to the image, and white represents collagen transversely oriented in Haversian systems.

1

ISPH 2025 @isph2025.bsky.social · Jun 21

This novel illuminating method generates autofluorescence of the bone matrix, and provides image contrast regarding degrees of birefringent collagen fiber orientations.

1

ISPH 2025 @isph2025.bsky.social · Jun 21

After three years of innovation and engineering, I went to Addis Ababa, and with permission from the Ethiopia National Museum, a fracture across the mid-shaft femur was imaged using circularly polarized ultraviolet light.

1

ISPH 2025 @isph2025.bsky.social · Jun 21

To achieve the task of researching Lucy’s skeletal microanatomy in the face of these constraints, it was necessary to build a portable confocal scanning optical microscope and perform optical thin section paleohistology.

1

ISPH 2025 @isph2025.bsky.social · Jun 21

There exists a class of objects that are rigorously defended from thin section paleohistology and that cannot travel to an imaging workstation for study. One such object is the famous “Lucy”, Australopithecus afarensis, discovered from fossil bearing deposits at Hadar, Ethiopia, 3.0 m.y.

1

ISPH 2025 @isph2025.bsky.social · Jun 21

We are pleased to announce the winner of our palaeohistology image competition is Professor Tim Bromage with his image titled "Lucy Fiber Orientation" #isph2025

1 4