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File:Struthiomimus sp. and Dakotaraptor steini DinoScience 2024.jpg

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Summary

Description
English: Reconstructed skeletons depicting the scene of a Struthiomimus sp. being chased by a Dakotaraptor steini, on display at DinoScience Dinosaur Science Expo 2024 in NAMBA SkyO, Osaka, Japan. Both skeletons are collections of Double Helix, Inc. (
ダブルヘリックス株式会社
)

Original commentary in the exhibition
Ornithomimosaurs, known as "ostrich-dinosaurs". were among the fastest dinosaurs with extreme running abilities. Their speed probably developed for protecting themselves, not for hunting, as they were not carnivorous. Dromaeosaurids, widely known as "Raptors", were swift hunters, but their bodies were not as highly adapted to fast running as ostrich-dinosaurs or tyrannosaurids; they were better-suited for ambush than pursuit. Dakotaraptor had, however, exceptionally elongated legs for raptors, suggesting it could be a good match for ostrich-dinosaurs occasionally.

  • Strutiomimus sp.: Common features of ostrich-dinosaurs include toothless beaks, large eyes, and their extremely long limbs. This skeleton recreates the moment of a sharp turn while running at its full speed. Discovered in Hell Creek Formation, Montana.
  • Dakotaraptor steini: This is a newly reconstructed skeleton of Dakotaraptor with recently discovered elements, including a partial skull. Its forelimbs show anchoring points for feathers (quill knobs). Discovered in Hell Creek Formation, South Dakota.
日本語: オルニトミモサウリア類——通称「ダチョウ恐竜」は、極限まで高速疾走に特化した“最速”の恐竜である。肉食恐竜ではないことから、そのスピードは捕食のためではなく、身を守るために発達したものとみられる。一方のドロマエオサウルス科————通称「ラブトル」は、映画の影響で俊足な印象が強いが、形態的にはダチョウ恐竜やティラノサウルス科ほど高度な走行適応はみられない。獲物を長時間追跡するよりは、瞬発力を生かした奇襲型のハンターと推測される。ただ、ダコタラブトルは大型ラプトルの中でも突出して後肢が長く強靭であり、地形や状況次第で十分にダチョウ恐竜と渡り合えたかもしれない。
  • ストルティオミムス 種未定 (Strutiomimus sp.)：ダチョウ恐竜は全般に形態的差異が少なく、歯のないくちばしや大きな目、極端に長い四肢などは同科に共通の特徴である。本骨格はダチョウの動きを詳細に検証し、全力疾走中に急旋回する一瞬を再現している。産出地：アメリカ・モンタナ州・ヘルクリーク層。
  • ダコタラプトル・ステイニ (Dakotaraptor steini)：2015年に発表されたドロマエオサウルス科の大型種。前肢に翼の付着痕が見られる。展示の骨格は、過去の標本では欠けていた頭蓋の一部や肩甲烏口骨などの新発見部位を加えて、本展のために新たに復元されたものである。産出地：アメリカ・サウスダコタ州・ヘルクリーク層。
中文（臺灣）：似鴕龍未定種（Struthiomimus sp.）與斯氏達科塔盜龍（Dakotaraptor steini）的骨骼裝架，於日本大阪難波SkyO《
DinoScience 恐竜科学博 ～ララミディア大陸の恐竜物語～
》特展展出。
Date
Source Own work
Author Tiouraren (Y.-C. Tsai)
Camera location34° 39′ 49.91″ N, 135° 30′ 03.07″ E Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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Captions

Reconstructed skeletons of Struthiomimus sp. and Dakotaraptor steini

Items portrayed in this file

depicts

Struthiomimus

Dakotaraptor steini

inception

6 August 2024

coordinates of the point of view

34°39'49.907"N, 135°30'3.074"E

exposure time

0.04166666666666666666 second

focal length

5.23 millimetre

media type

image/jpeg

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