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.

24 أكتوبر 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.

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 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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 resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting resting 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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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)

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)

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.

شاهد ايضاً: الباحثون يحولون خلايا الجلد البشرية إلى بويضات لكن ليست صالحة للاستخدام بعد

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.

شاهد ايضاً: ناسا تقدم أحدث رواد الفضاء لديها: 10 مختارين من أكثر من 8000 متقدم

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.

شاهد ايضاً: البونوبو في الكونغو يشكلون مجموعات من الفتيات للدفاع عن أنفسهن ضد العدوان الذكوري، وفقًا لدراسة

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.

أخبار ذات صلة

نجم البحر المريض مغطى بآفات على قاع المحيط، مع ظهور سحب من الغازات في الخلفية، مما يعكس تأثير مرض هزال نجم البحر.

العلماء يقولون إنهم حلوا لغز ما قتل أكثر من 5 مليارات نجم بحر

نجوم البحر، تلك الكائنات البحرية الرائعة، تواجه أزمة تهدد وجودها منذ عام 2013، حيث أدى وباء غامض إلى انقراض جماعي. لكن العلماء أخيرًا كشفوا عن السبب: بكتيريا ضارة. هل ستتمكن جهودهم من إنقاذ هذه الكائنات؟ اكتشف المزيد عن هذا التحدي البيئي وكيف يمكن أن يؤثر على النظام البيئي بأسره.

علوم4 أغسطس 2025

صورة لكوكب الأرض من الفضاء، تظهر المحيطات واليابسة بوضوح، مما يعكس جمال كوكبنا في سياق الحديث عن الكويكب 2024 YR4.

لماذا من غير المرجح أن يصطدم الكويكب 2024 YR4 بالأرض في عام 2032 وكيف يتابع العلماء ذلك

هل تساءلت يومًا عن الكويكبات التي قد تهدد كوكبنا؟ الكويكب 2024 YR4 يثير القلق بزيادة طفيف في احتمالات الاصطدام، لكن الخبراء يؤكدون أن الفرصة لا تزال ضئيلة للغاية. تابع القراءة لتكتشف كيف يراقب العلماء هذا الكويكب وما هي التوقعات المستقبلية!

علوم13 فبراير 2025

شهاب ساطع يضيء سماء الليل، مع خلفية مظلمة، مما يعكس زخات شهب التورايد القادمة التي ستصل ذروتها قريباً.

ذروة زخات شهب الثور تتزامن مع أسبوع من الأحداث في نوفمبر

استعدوا لمشاهدة عرض سماوي مذهل! ستصل زخات شهب التورايد الجنوبية إلى ذروتها قريباً، مما يوفر فرصة رائعة لرؤية كرات نارية ساطعة تزين سماء الليل. انطلقوا بعيداً عن أضواء المدينة واستعدوا لتجربة لا تُنسى، فالأفق ينتظركم!

علوم4 نوفمبر 2024

صبي يرتدي نظارات خاصة بالخسوف، يراقب السماء بترقب خلال خسوف كلي للشمس، مستعدًا لتجربة هذا الحدث الفلكي المثير.

الكسوف الكلي للشمس في شهر أبريل قريب. هذا هو السبب في جدوى مشاهدته وكيفية البقاء آمنًا

استعد لتجربة سماوية لا تُنسى! في 8 أبريل، سيغمر الخسوف الكلي للشمس أمريكا الشمالية في ظلام مؤقت، حيث يمر عبر 15 ولاية ويشهدها نحو 44 مليون شخص. لا تفوت فرصة مشاهدة هذا الحدث الفريد، واحصل على نظارات خاصة لحماية عينيك واستمتع بعجائب الكون!

علوم29 مارس 2024