Isanosaurus
Isanosaurus was one of the very first long-necked sauropod dinosaurs. It walked on all four legs and lived in what is now Thailand during the Early Jurassic Period, about 197 to 192 million years ago.13
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Ebyewuunyisa
Isanosaurus was one of the earliest sauropods, the group that later included giants like Brachiosaurus and Diplodocus.1
Its thigh bone is 76 centimetres long and very straight, showing it had column-like legs for walking on all fours.1
The only known skeleton was found in 1998 near the village of Ban Non Thaworn, but most of it had already eroded away.1
Isanosaurus had neck vertebrae that were ball-and-socket joints, making its neck flexible.1
Scientists used to think Isanosaurus lived in the Late Triassic, but in 2026 new dating showed it lived in the Early Jurassic.1
The tail vertebrae of Isanosaurus were hollow at both ends, like a double-sided cup.1

Omumenyi w'enfumo
Enfumo: Isanosaurus was the oldest sauropod dinosaur.
Amazima: It was once thought to be from the Late Triassic, but newer dating shows it lived in the Early Jurassic, about 197 to 192 million years ago. Other sauropods may be older.1
Eri abakugu mu dayinoso
- Erinnya lya ssaayansi
- Isanosaurus
- Yatuumibwa
- Buffetaut et al. 20003
- Ekibinja
- Ez'ensingo empanvu
- Ekika / ekibinja
- Sauropoda3
- Engabanya
- Sauropodomorpha > Sauropoda3
- Emyaka gy'enjazi
- emyaka obukadde 193 okutuuka ku 175 (Pliensbachian / Toarcian)3
- Ensengeka z'enjazi
- Nam Phong3
- Ensi
- Tayilandi3
- Ebisigalira ebyazuulibwa
- 1 mu The Paleobiology Database3
- Okuzuulibwa
- Isanosaurus was named in 2000 by French palaeontologist Éric Buffetaut and his team. The species name attavipachi honours P. Attavipach, a supporter of Thai palaeontology.1
- Kikyakubaganyizibwako ebirowoozo
- Scientists are not sure exactly how Isanosaurus is related to other early sauropods, because the only known fossils are very incomplete.1
Ebituufu gye biva
- Isanosaurus (en.wikipedia.org)
- Isanosaurus attavipachi Buffetaut et al. 2000 - Encyclopedia of Life (eol.org)
- Isanosaurus in The Paleobiology Database (CC BY 4.0): emyaka, ebifo, ensengeka z'enjazi, engabanya.
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