希少な病理学的特徴をもつ、Onchopristis numidus の双鋭吻部棘歯 ― 白亜紀のノコギリザメ - 化石歯

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Sullivan Halipré
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Estimate € 280 - € 350
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Description from the seller

科学名: Onshopristis numidus - サーベフィッシュの口吻歯 - 本物の異常または病的な二重鋭刺牙を伴う。

位置: タウズ、南部モロッコ

地質層系: Ifezouane Formation - Kem Kem 赤砂岩層

年代: 上部白亜紀、セノマニアン期(推定 9600万年)

サイズ: 9cm

REF.: #J658

DESCRIPTION:

観察: Onchopristis numidus の“歯”と呼ばれるものは実際には唇状の歯牙が横方向に配列された、ノコギリ状の吻部に並ぶ改変された歯牙です。これらの要素は北アフリカの白亜系堆積物、特にモロッコのKem Kem Bedsで比較的一般的ですが、二つの明確な突起や鋭刺を持つ異常形態を示す標本はかなりむしろまれです。

この異常の重要性は科学的に記録されています。異常な O. numidus の歯牙を特異に研究した研究では、後縁に少なくとも二つの鋭刺を有する標本を記述し、これは必ずしも別の種を表すものではなく、Onchopristis numidus の異常形態または病的形態であると結論づけられました。

著者らはまた、この種の通常の遺物は Kem Kem 堆積物で豊富に見られる一方で、これらの病的形態は時折しか出現しないと指摘しています。

後の研究は、それらの希少性と真偽性についてさらに裏付けを提供します。多鋭刺歯牙は断面検査とマイクロCT 技術を用いて検討されました。あるケースでは、異なる個体の部品を接合して操作されたことが判明し、別の本物の二重鋭刺歯牙は切断され、人工的改変の証拠が見られませんでした。これにより、異常は実際に O. numidus に起源することが確認され、同時にコレクターに提供される特異標本の真偽を慎重に検証する重要性が浮き彫りになりました。

私たちの標本について: いくつかの接着断裂がありますが、深い検査の結果、この吻牙は非常に特別で真のものであり、二重鋭刺牙を示しており、人工的改変の痕跡はありません。

すべての化石には真贋証明書が付属します。毎週、発行された真贋証明書はウェブサイトのデータベース検証システムで更新されます。証明書がまだ更新されていない場合はご連絡ください。すぐに更新します。表示箱は付属していません。

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: Onshopristis numidus - サーベフィッシュの口吻歯 - 本物の異常または病的な二重鋭刺牙を伴う。

位置: タウズ、南部モロッコ

地質層系: Ifezouane Formation - Kem Kem 赤砂岩層

年代: 上部白亜紀、セノマニアン期(推定 9600万年)

サイズ: 9cm

REF.: #J658

DESCRIPTION:

観察: Onchopristis numidus の“歯”と呼ばれるものは実際には唇状の歯牙が横方向に配列された、ノコギリ状の吻部に並ぶ改変された歯牙です。これらの要素は北アフリカの白亜系堆積物、特にモロッコのKem Kem Bedsで比較的一般的ですが、二つの明確な突起や鋭刺を持つ異常形態を示す標本はかなりむしろまれです。

この異常の重要性は科学的に記録されています。異常な O. numidus の歯牙を特異に研究した研究では、後縁に少なくとも二つの鋭刺を有する標本を記述し、これは必ずしも別の種を表すものではなく、Onchopristis numidus の異常形態または病的形態であると結論づけられました。

著者らはまた、この種の通常の遺物は Kem Kem 堆積物で豊富に見られる一方で、これらの病的形態は時折しか出現しないと指摘しています。

後の研究は、それらの希少性と真偽性についてさらに裏付けを提供します。多鋭刺歯牙は断面検査とマイクロCT 技術を用いて検討されました。あるケースでは、異なる個体の部品を接合して操作されたことが判明し、別の本物の二重鋭刺歯牙は切断され、人工的改変の証拠が見られませんでした。これにより、異常は実際に O. numidus に起源することが確認され、同時にコレクターに提供される特異標本の真偽を慎重に検証する重要性が浮き彫りになりました。

私たちの標本について: いくつかの接着断裂がありますが、深い検査の結果、この吻牙は非常に特別で真のものであり、二重鋭刺牙を示しており、人工的改変の痕跡はありません。

すべての化石には真贋証明書が付属します。毎週、発行された真贋証明書はウェブサイトのデータベース検証システムで更新されます。証明書がまだ更新されていない場合はご連絡ください。すぐに更新します。表示箱は付属していません。

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
Rare pathological double-barbed rostral denticle of Onchopristis numidus - Cretaceous Sawfish
地質年代
Upper Cretaceous, Cenomanian stage ( 96 million years)
コンディション
Natural
Authenticity
Original/official
スペインVerified
399
Objects sold
100%
protop

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