博物馆级 Ornithocheirid 翼龙爪 - 下白垩纪 Elrhaz Fm - 爪类化石
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卖家的描述
Scientific name: cf Ornithocheirid Pterosaur ( cf Ornithocheirus simus, (Owen, 1861) - Pterosaur claw
Location: Gadoufaoua, Téneré Desert, Niger.
Geological Formation: Erlhaz Fm
Age: Lower Cretaceous, Aptian/Albian stage ( 113 million years)
Size: 32 mm • 1.26 in
REF.: #J410
DESCRIPTION:
Ornithocheirus simus, is only known from fragmentary jaw tips. It bore a distinctive convex "keeled" crest on its snout similar to its relatives. Ornithocheirus had relatively narrow jaw tips compared to the related Coloborhynchus and Tropeognathus, which had prominently-expanded rosettes of teeth, as well as a more developed "keeled" crest compared to Ornithocheirus. Another feature that made Ornithocheirus unique and unlike its relatives, was that its teeth of were mostly vertical, rather than set at an outward-pointing angle.
It was believed in the past that Ornithocheirus was one of the largest pterosaurs to have existed, with a wingspan possibly measuring 40 feet (12.2 m) wide.
Diagnostic characteristics of pterosaur claws:
-Symmetrical vein grooves
-The bottom of the digit claw is flat.
-The bend at the end of the tip is a specific trait of Pterosaur claws: The tip shows a thin flange or ridge of bone on the very tip on the ventral edge. It could be considered an adaptation for the best grip when perching on steep surfaces. That flange aids in hooking on cliffs.
Observations about this specimen:
Unsual top rare specimen, almost fully complete. We assign this claw to the family Ornithocheiridae, since a precise taxonomic classification is very difficult to arrive at with only one claw. However, it must belong to a pterosaur of this family, which has been described from the Early Cretaceous of Niger. Not restored or glued.
All of our fossils come with a Certificate of Authenticity. Every week, the issued Certificates of Authenticity are updated in our database verification system on our website. If you find that your certificate has not yet been updated, please contact us and we will update it immediately. Display box included.
IMPORTANT SHIPPING INFORMATION:
Our company is based in the USA, but our headquarters and products are located in Europe. Therefore, ALL PRODUCTS WILL BE SHIPPED FROM EUROPE. Consequently, any European customer will receive their shipment without any import charges, as it will be an intra-community shipment.
For customers in the USA: Shipments will be made via UPS from Europe, and in this case, we will be responsible for any import charges. These will be paid online by us before the package arrives. Therefore, US customers will not pay any import fees.
For the rest of the world: We are not responsible for any import charges applicable to the destination country.
卖家故事
使用Google翻译翻译Scientific name: cf Ornithocheirid Pterosaur ( cf Ornithocheirus simus, (Owen, 1861) - Pterosaur claw
Location: Gadoufaoua, Téneré Desert, Niger.
Geological Formation: Erlhaz Fm
Age: Lower Cretaceous, Aptian/Albian stage ( 113 million years)
Size: 32 mm • 1.26 in
REF.: #J410
DESCRIPTION:
Ornithocheirus simus, is only known from fragmentary jaw tips. It bore a distinctive convex "keeled" crest on its snout similar to its relatives. Ornithocheirus had relatively narrow jaw tips compared to the related Coloborhynchus and Tropeognathus, which had prominently-expanded rosettes of teeth, as well as a more developed "keeled" crest compared to Ornithocheirus. Another feature that made Ornithocheirus unique and unlike its relatives, was that its teeth of were mostly vertical, rather than set at an outward-pointing angle.
It was believed in the past that Ornithocheirus was one of the largest pterosaurs to have existed, with a wingspan possibly measuring 40 feet (12.2 m) wide.
Diagnostic characteristics of pterosaur claws:
-Symmetrical vein grooves
-The bottom of the digit claw is flat.
-The bend at the end of the tip is a specific trait of Pterosaur claws: The tip shows a thin flange or ridge of bone on the very tip on the ventral edge. It could be considered an adaptation for the best grip when perching on steep surfaces. That flange aids in hooking on cliffs.
Observations about this specimen:
Unsual top rare specimen, almost fully complete. We assign this claw to the family Ornithocheiridae, since a precise taxonomic classification is very difficult to arrive at with only one claw. However, it must belong to a pterosaur of this family, which has been described from the Early Cretaceous of Niger. Not restored or glued.
All of our fossils come with a Certificate of Authenticity. Every week, the issued Certificates of Authenticity are updated in our database verification system on our website. If you find that your certificate has not yet been updated, please contact us and we will update it immediately. Display box included.
IMPORTANT SHIPPING INFORMATION:
Our company is based in the USA, but our headquarters and products are located in Europe. Therefore, ALL PRODUCTS WILL BE SHIPPED FROM EUROPE. Consequently, any European customer will receive their shipment without any import charges, as it will be an intra-community shipment.
For customers in the USA: Shipments will be made via UPS from Europe, and in this case, we will be responsible for any import charges. These will be paid online by us before the package arrives. Therefore, US customers will not pay any import fees.
For the rest of the world: We are not responsible for any import charges applicable to the destination country.
卖家故事
使用Google翻译翻译详细资料
标本
Museum Grade Ornithocheirid Pterosaur Claw - Lower Cretaceous Elrhaz Fm
地质时期
Lower Cretaceous, Aptian/Albian stage ( 113 million years)
状态
自然的
真伪
原始的/正式的
