Overview
- Researchers reanalyzed the rediscovered Gram Formation vertebrae in a study published Monday, June 29, 2026, and confirmed a centrum diameter of 23 cm.
- That 23 cm measurement underpins a model-based maximum body-length estimate of about 24.3 metres while the authors stress this figure depends on scaling assumptions and incomplete remains.
- High-resolution micro-CT imaging revealed at least 64 growth bands in the centrum, giving a minimum age at death of 64 years and a modeled potential longevity up to about 96 years.
- The specimen box contained two partially preserved vertebrae, at least 185 small fragments and rock casts, so the damaged and incomplete condition limits what can be concluded from the material.
- Sediment attached to the bones yielded tiny scales and gill-associated fragments identified as from a basking shark and interpreted by the team as possible stomach contents, a claim the authors present as novel but still developing.