Metashastasaurus
Metashastasaurus was a huge marine reptile that swam in the oceans during the Late Triassic, about 227 to 205 million years ago. It was not a dinosaur, but a kind of ichthyosaur, with a body like a dolphin and a long snout. It lived in the seas near what is now British Columbia, Canada.12
ມັນມີຊີວິດຢູ່ເມື່ອໃດ?
ມັນໄວປານໃດ?
ເລື່ອງໜ້າຮູ້ມ່ວນໆ
Metashastasaurus was first named in 2001 by scientists Nicholls and Manabe.1
Its skeleton is very similar to other shastasaurid ichthyosaurs, but its shoulder blade and fibula (a leg bone) are shaped differently.2
Its skull has large diamond-shaped frontals (bones on top of the head) that enter the supratemporal fenestrae, which are openings in the skull.2
It had four proximal carpals (wrist bones) and four digits in its front limb, showing that earlier reconstructions were based on incomplete material.2
Metashastasaurus lived in a marine environment and was nektonic, meaning it swam actively in the open water.1
It gave birth to live young, like other ichthyosaurs, rather than laying eggs.1

ໄຂຄວາມເຊື່ອຜິດ
ຄວາມເຊື່ອຜິດ: Some people think Metashastasaurus was a dinosaur because it lived in the same time as dinosaurs.
ຄວາມຈິງ: Metashastasaurus was an ichthyosaur, a marine reptile, not a dinosaur. Ichthyosaurs lived in the sea and had fish-like bodies, while dinosaurs were land reptiles.1
ສຳລັບຜູ້ຊ່ຽວຊານໄດໂນ
- ຊື່ວິທະຍາສາດ
- Metashastasaurus
- ຕັ້ງຊື່ໂດຍ
- Nicholls and Manabe 20013
- ກຸ່ມ
- ອິກທິໂອຊໍ
- ຄອບຄົວ / ເຄລດ
- Shastasauridae3
- ການຈັດໝວດໝູ່
- Ichthyosauria > Ichthyosauromorpha3
- ອາຍຸຂອງຫີນ
- 227 ຫາ 206 ລ້ານປີ (Norian)3
- ຊັ້ນຫີນ
- Pardonet3
- ປະເທດ
- ການາດາ3
- ບັນທຶກຟອສຊິລ
- 2 ໃນ The Paleobiology Database3
- ການຄົ້ນພົບ
- Metashastasaurus was named by Nicholls and Manabe in 2001 after they studied new specimens from Pink Mountain, British Columbia. These specimens showed that the species previously called Shastasaurus neoscapularis was different enough to be placed in a new genus.2
- ຍັງຖົກຖຽງກັນຢູ່
- Scientists are still debating whether the genus Shastasaurus is valid, because its type species is based on poor fossils. Metashastasaurus was created to help clarify this, but the relationships between these ichthyosaurs are still not fully settled.2
ຂໍ້ມູນມາຈາກໃສ
- PBDB Taxon (paleobiodb.org)
- A new genus of ichthyosaur from the Late Triassic... : Canadian Journal of Earth Sciences (ovid.com)
- Metashastasaurus in The Paleobiology Database (CC BY 4.0): ອາຍຸ, ສະຖານທີ່, ຊັ້ນຫີນ, ການຈັດໝວດໝູ່.
ທຸກຂໍ້ມູນໃນໜ້ານີ້ມີຕົວເລກທີ່ຊີ້ໄປຫາແຫຼ່ງອ້າງອີງ. ຖ້າພວກເຮົາຜິດພາດ, ຂໍໂທດເດີ, ພວກເຮົາເປັນແຟນໄດໂນ ບໍ່ແມ່ນວາລະສານວິທະຍາສາດ. ບອກພວກເຮົາທີ່ [email protected] ແລ້ວພວກເຮົາຈະແກ້ໄຂ.
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