ティラノサウルス類の歯 - Nanotyrannus sp - 後期白亜紀 - Lance Creek Formation - 化石歯
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Description from the seller
科学名: Tyrannosaur Dinosaur - Nanotyrannus sp - Theropod Dinosaur Tooth
Location: Weston Co., Wyoming (Private Land), USA
Geological Formation: Lance Creek Fm
Age: Late Cretaceous, Maastrichtian stage (~68-66 Million Years)
Size: 3cm
REF.: #J561
DESCRIPTION:
Nanotyrannus lancensis は後期白亜紀の Hell Creek Formation（元は Lance Formation の一部）に属する小型・迅速・機敏なティラノサウルスで、T. rex とは明確に異なる特徴を持つことで知られています。最近の研究では、若年の T. rex ではなく独自の種である、という根拠が示されています。特徴として、歯が多いこと、手が大きいこと、骨構造が異なることなどが挙げられます。意味は「ドワーフ・タイラント（小さな暴君）」で、T. rex と共存する小型 prey を狙う有能な捕食者であったと考えられています。
Key Facts
Name Meaning: ギリシャ語の nanos（小人）と tyrannos（暴君）からの「小さな暴君」という意味。
Species Name: lancensis はその頭骨が見つかった Lance Formation を指す。
Size: 約 15-18 フィート（約 4.6-5.5 メートル）長、成体の T. rex よりはるかに小さく軽い。
Habitat: Hell Creek and Lance Creek Formation（Late Cretaceous）同時代・同地域で T. rex と共存。
Lifestyle: 速く機敏な追跡型の捕食者で、おそらく pachycephalosaurs のような小型の恐竜を狙っていた。
Controversy: かつては distinct species か juvenile T. rex かで長く論争があったが、近年の証拠により独自の属とみなす見解が強い。
Distinguishing Features: T. rex より狭い頭部、歯の数が多い、手が大きい、骨構造が異なる。
The Debate;
Juvenile T. rex Theory: ヘル・クリークと Lance Creek の小型ティラノサウルス化石が若年の T. rex だと考える科学者も多かった。理由は大きな Nanotyrannus 化石が存在せず、T. rex の若年個体は珍しかったため。
Separate Species Theory: Nanotyrannus 化石が成体に似た特徴（癒合した骨など）を示し、T. rex が成長してなる種ではない独自の特徴を持つことが確認され、T. rex へと成長することは生物学的に不可能だと結論づけられた。
Current Consensus: Nanotyrannus は小型のティラノサウルスの独立した属であり、T. rex と共存する独自で機敏な捕食者として位置づけられる。
Observations: 保存状態の良い標本で、縁鋸歯（serrations）とエナメルが素晴らしい。接着傷は1件の綺麗な断裂だけ。修復なし。極上の標本。
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.
Seller's Story
Jurassic Dreams is the world's largest online dinosaur fossils store, unrivaled as the most reputable source for authentic fossil specimens. We are the only leading online fossils store owned by an accredited geologist and paleontology expert. In addition, we have extraordinary authentic meteorites specimens from all over the universe.
With dozens of different specimens in stock... our customers come back time and again. Because, simply put, our lifetime guarantee is unbeatable.
My name is Juan A. Poblador and I have a strong academic background in Paleontology and Geology from the University of Madrid and University of Alicante. I have participated in fossil excavation projects in several locations mainly in Europe and Africa for over 10 years. Writing scientifically accurate descriptions of every specimen is one of the tasks that consume most of my time. Obviously, recognizing fake and restored fossils is second nature to me. So you can be sure that every fossil in this website has been carefully screened and inspected by me.
I have served collectors and fossil enthusiasts over the years. I have also supplied museums and institutions. I combine the study and research of significant specimens with exhibiting and selling the many other finds, which helps fund the new expeditions.
Additionally, I have a small team of support staff for logistics. I've personally trained them to handle and pack the fossils properly so that they can be shipped within 24 hours and arrive at your door in one piece.
Last but not least, I'm fortunate to have a great network of other seasoned paleontologists with whom I discuss the rarest items, new discoveries, and exploration trips to remote quarries... If I don't know something, the paleontological community really helps out.
I like to manage Jurassic Dreams as a well curated online exhibition of museum grade pieces. I'm a collector myself and I love to share the knowledge with other fellow collectors. That's why I will respond to any email when you have any doubt or when you buy, and you'll have a personalized fossil selection experience.
Jurassic Dreams a proud member of the Association of Applied Paleontological Sciences (AAPS) and abide by its Code of Ethics. The Association of Applied Paleontological Sciences conforms to the recommendations of The National Academy of Sciences Report on Paleontological Collecting and standard business practices and ethics.
In addition, we are the certified member #5681 of the International Meteorite Collectors Association (IMCA) and a certified member of GMA (Global Meteorite Association) G0043. IMCA and GMA are the most prestigious associations helping meteorite collectors in their search for Authentic Meteorites for their collections and assisting others in helping to learn more about meteorites.
A physical certificate of authenticity is provided free of charge with every fossil we sell. This is our lifetime guarantee. The certificate, individually prepared for each fossil by Juan A. Poblador, an expert paleontologist, contains an accurate scientific description, and the certificate's validity can be verified online at all times. In addition, a 100% money-back guarantee is provided.
科学名: Tyrannosaur Dinosaur - Nanotyrannus sp - Theropod Dinosaur Tooth
Location: Weston Co., Wyoming (Private Land), USA
Geological Formation: Lance Creek Fm
Age: Late Cretaceous, Maastrichtian stage (~68-66 Million Years)
Size: 3cm
REF.: #J561
DESCRIPTION:
Nanotyrannus lancensis は後期白亜紀の Hell Creek Formation（元は Lance Formation の一部）に属する小型・迅速・機敏なティラノサウルスで、T. rex とは明確に異なる特徴を持つことで知られています。最近の研究では、若年の T. rex ではなく独自の種である、という根拠が示されています。特徴として、歯が多いこと、手が大きいこと、骨構造が異なることなどが挙げられます。意味は「ドワーフ・タイラント（小さな暴君）」で、T. rex と共存する小型 prey を狙う有能な捕食者であったと考えられています。
Key Facts
Name Meaning: ギリシャ語の nanos（小人）と tyrannos（暴君）からの「小さな暴君」という意味。
Species Name: lancensis はその頭骨が見つかった Lance Formation を指す。
Size: 約 15-18 フィート（約 4.6-5.5 メートル）長、成体の T. rex よりはるかに小さく軽い。
Habitat: Hell Creek and Lance Creek Formation（Late Cretaceous）同時代・同地域で T. rex と共存。
Lifestyle: 速く機敏な追跡型の捕食者で、おそらく pachycephalosaurs のような小型の恐竜を狙っていた。
Controversy: かつては distinct species か juvenile T. rex かで長く論争があったが、近年の証拠により独自の属とみなす見解が強い。
Distinguishing Features: T. rex より狭い頭部、歯の数が多い、手が大きい、骨構造が異なる。
The Debate;
Juvenile T. rex Theory: ヘル・クリークと Lance Creek の小型ティラノサウルス化石が若年の T. rex だと考える科学者も多かった。理由は大きな Nanotyrannus 化石が存在せず、T. rex の若年個体は珍しかったため。
Separate Species Theory: Nanotyrannus 化石が成体に似た特徴（癒合した骨など）を示し、T. rex が成長してなる種ではない独自の特徴を持つことが確認され、T. rex へと成長することは生物学的に不可能だと結論づけられた。
Current Consensus: Nanotyrannus は小型のティラノサウルスの独立した属であり、T. rex と共存する独自で機敏な捕食者として位置づけられる。
Observations: 保存状態の良い標本で、縁鋸歯（serrations）とエナメルが素晴らしい。接着傷は1件の綺麗な断裂だけ。修復なし。極上の標本。
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.
Seller's Story
Jurassic Dreams is the world's largest online dinosaur fossils store, unrivaled as the most reputable source for authentic fossil specimens. We are the only leading online fossils store owned by an accredited geologist and paleontology expert. In addition, we have extraordinary authentic meteorites specimens from all over the universe.
With dozens of different specimens in stock... our customers come back time and again. Because, simply put, our lifetime guarantee is unbeatable.
My name is Juan A. Poblador and I have a strong academic background in Paleontology and Geology from the University of Madrid and University of Alicante. I have participated in fossil excavation projects in several locations mainly in Europe and Africa for over 10 years. Writing scientifically accurate descriptions of every specimen is one of the tasks that consume most of my time. Obviously, recognizing fake and restored fossils is second nature to me. So you can be sure that every fossil in this website has been carefully screened and inspected by me.
I have served collectors and fossil enthusiasts over the years. I have also supplied museums and institutions. I combine the study and research of significant specimens with exhibiting and selling the many other finds, which helps fund the new expeditions.
Additionally, I have a small team of support staff for logistics. I've personally trained them to handle and pack the fossils properly so that they can be shipped within 24 hours and arrive at your door in one piece.
Last but not least, I'm fortunate to have a great network of other seasoned paleontologists with whom I discuss the rarest items, new discoveries, and exploration trips to remote quarries... If I don't know something, the paleontological community really helps out.
I like to manage Jurassic Dreams as a well curated online exhibition of museum grade pieces. I'm a collector myself and I love to share the knowledge with other fellow collectors. That's why I will respond to any email when you have any doubt or when you buy, and you'll have a personalized fossil selection experience.
Jurassic Dreams a proud member of the Association of Applied Paleontological Sciences (AAPS) and abide by its Code of Ethics. The Association of Applied Paleontological Sciences conforms to the recommendations of The National Academy of Sciences Report on Paleontological Collecting and standard business practices and ethics.
In addition, we are the certified member #5681 of the International Meteorite Collectors Association (IMCA) and a certified member of GMA (Global Meteorite Association) G0043. IMCA and GMA are the most prestigious associations helping meteorite collectors in their search for Authentic Meteorites for their collections and assisting others in helping to learn more about meteorites.
A physical certificate of authenticity is provided free of charge with every fossil we sell. This is our lifetime guarantee. The certificate, individually prepared for each fossil by Juan A. Poblador, an expert paleontologist, contains an accurate scientific description, and the certificate's validity can be verified online at all times. In addition, a 100% money-back guarantee is provided.
Details
標本
Tyrannosaur Dinosaur Tooth - Nanotyrannus sp - Late Cretaceous - Lance Creek Fm
地質年代
Late Cretaceous, Maastrichtian stage (~68-66 Million Years)
コンディション
Natural
Authenticity
Original/official
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