مومياوات الديناصورات تكشف أسرار ما قبل التاريخ

اكتشف العلماء مومياوات ديناصورات مذهلة في وايومنغ، تشمل أول مومياء لصغير ديناصور محنط. هذه الاكتشافات تكشف عن تفاصيل جديدة حول شكل الديناصورات وكيفية تحنيطها، مما يفتح آفاقًا جديدة لفهم عصور ما قبل التاريخ.

12 نوفمبر 2025

مومياوات ديناصورات محفوظة بشكل غير تقليدي في بيئة مائية، تظهر تفاصيل جلدها وحراشفها على طبقة رقيقة من الطين. — تظهر هذه الرسمة التي قدمتها جامعة شيكاغو كيف كان قد يبدو ديناصور ذو منقار بطة استنادًا إلى بقايا محنطة تم العثور عليها في وايومنغ.

بقايا مومياء ديناصور منقار البط محفوظة في طبقة رقيقة من الطين، تظهر انطباعات جلدية وحراشف، مما يقدم رؤى جديدة عن شكل الديناصورات. — تظهر هذه الصورة المقدمة من جامعة شيكاغو انطباعات لقدم ديناصور محنط. (تايلر كيلور/جامعة شيكاغو عبر أسوشيتد برس)

مومياء ديناصور محفوظة تظهر انطباعات جلدية وحراشف على طبقة من الطين، مع يد إنسان تلامس البقايا، توضح تفاصيل التحنيط الفريد. — تظهر هذه الصورة التي قدمتها جامعة شيكاغو جلد ديناصور مومى صغير ذو قشور تم العثور عليه في وايومنغ. (تايلر كيلور/جامعة شيكاغو عبر أسوشيتد برس)

مومياء ديناصور محفوظة بشكل غير عادي تظهر تفاصيل جلدها وحراشفها على طبقة طينية، مما يوفر رؤى جديدة حول مخلوقات ما قبل التاريخ. — تظهر هذه الصورة المقدمة من جامعة شيكاغو مومياء لديناصور ذو منقار بط resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting 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resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting 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resting resting

التصنيف:علوم

شارك الخبر:

اكتشف باحثون زوجًا مخيفًا من مومياوات الديناصورات التي يبدو أنها حُفظت بطريقة غير متوقعة.

تختلف رفات الديناصورات هذه عن المومياوات الملفوفة في مصر أو المومياوات البشرية الطبيعية التي يتم حفظها بالصدفة في المستنقعات أو الصحاري. فالديناصورات المحنطة قديمة جدًا لدرجة أن جلدها وأنسجتها الرخوة تحجرت. ويستخدم العلماء هذه البقايا النادرة، إلى جانب عظام الديناصورات، لإعادة تكوين الشكل الذي ربما كان يبدو عليه شكل هذه المخلوقات التي تعود إلى عصور ما قبل التاريخ.

ظل العلماء يكتشفون مومياوات الديناصورات لأكثر من قرن من الزمان. دُفن بعضها بسرعة بعد موتها، بينما غرق بعضها الآخر في المسطحات المائية أو جفّت.

وينحدر العديد منها، بما في ذلك مومياء ديناصور بمنقار البط اكتشفت في عام 1908، من منطقة في شرق وايومنغ. في الدراسة الجديدة، عاد العلماء إلى ما يسمى بمنطقة المومياء هذه وعثروا على بقايا جديدة، بما في ذلك مومياء ديناصور منقار البط الذي كان عمره بضع سنوات فقط عندما مات.

وقال بول سيرينو، عالم الحفريات بجامعة شيكاغو الذي شارك في هذا الاكتشاف: "هذا هو أول صغار ديناصور محنط بالفعل".

ومن المثير للدهشة أن المومياوات الجديدة يبدو أنها حُفظت دون أي دليل على وجود جلد متحجر. وبدلاً من ذلك، تركوا انطباعات لجلودهم وحراشفهم على طبقة رقيقة من الطين التي تصلبت بمساعدة الميكروبات.

وقد حافظ هذا النمط من التحنيط على كائنات حية أخرى من قبل، لكن العلماء لم يعتقدوا أنه يمكن أن يحدث على اليابسة. وقال سيرينو إنه من المحتمل أن تكون المومياوات الأخرى التي عُثر عليها في موقع وايومنغ قد تكونت بطريقة مماثلة.

واستخدم العلماء هذه القوالب الطينية لرسم صورة أوضح لما يمكن أن تكون عليه الديناصورات ذات منقار البط عندما كانت على قيد الحياة، بما في ذلك المسامير على ذيلها والحوافر على أقدامها. نُشرت النتائج الجديدة يوم الخميس في مجلة Science.

يمكن أن يساعد فهم كيفية تشكل مومياوات الديناصورات العلماء في الكشف عن المزيد منها. قال ماتيوس فوسيك، عالم الحفريات بجامعة ميسيريكورديا الذي لم يشارك في هذا الاكتشاف، إنه من المهم البحث ليس فقط عن عظام الديناصورات، ولكن أيضًا عن آثار الجلد والأنسجة الرخوة التي قد لا يتم دراستها أو حتى التقاطها.

يقدم المزيد من المومياوات المزيد من الرؤى حول كيفية نمو هذه المخلوقات وعيشها.

وقالت ستيفاني درومهيلر، عالمة الحفريات الفقارية في جامعة تينيسي في نوكسفيل، التي لم تشارك في الدراسة: في كل مرة نعثر فيها على واحدة من هذه الحفريات، نجد كنزاً من المعلومات عن هذه الحيوانات.

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مومياوات الديناصورات تكشف أسرار ما قبل التاريخ

أخبار ذات صلة

العلماء يكتشفون "مجموعة المواد الكيميائية الأولى" للحياة في أرحام الكواكب

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