Research milestones
Questions, methods and dated findings
How knowledge develops
A discovery becomes a finding through its context, comparisons and analyses. These milestones introduce the main questions addressed in Angeac publications, including revisions and the limits of each stage.
The figure compares two samples: identified macroremains from the 2010–2017 seasons and microremains recovered by sieving in 2017. Proportions depend on the material collected and the method; they are not a direct census of all animals living in the wetland.
Scientific milestones
2012
Describing the site
The first synthesis characterises the sediments and fossils. Its initial Hauterivian–Barremian attribution was revised by subsequent research.
2017–2018
Reassessing the age
Charophytes, followed by a re-examination of pollen and spores, revised the dating. The 2022 synthesis assigns the site to the Berriasian.
2018–2021
Understanding fossil accumulation
Trampling experiments and taphonomic research compare fractures, surface traces, sediments and the distribution of remains to investigate the deposit’s formation.
2022
Cataloguing vertebrates
The synthesis brings together large fossils and microremains, then compares Angeac with other faunas of the Jurassic–Cretaceous transition. Counts reflect the material studied at that date.
2023
Studying individual variation
Ornithomimosaur femoral shape is examined as possible evidence of sexual dimorphism. This interpretation does not directly identify the sex of each individual.
2024
Reconstructing feeding interactions
Coprolite shapes and contents provide evidence of consumers and their diets in the wetland.
2026
Distinguishing biological and fossilisation signals
Chemical mapping of coprolites compares biological signals with changes that occurred after deposition.
2026
Comparing turiasaur teeth
Anatomy and morphometrics assess shape variation in relation to tooth position in the jaw. Different teeth do not necessarily represent different species.
Reading figures with their dates and methods
Numbers of remains, identifiable specimens and minimum individuals are different measures. One fragmented bone can produce several remains; several bones can belong to one animal. Totals increase with successive seasons and do not always cover the same sectors.
A conference contribution may announce preliminary observations before a full article. The bibliography distinguishes these document types and groups versions of the same paper.
All publications and their authors → · Methods and collections →
