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شگفتی ها - کشف نکته جدید در مورد آرکوپتریکس و پتروسورها

کشف نکته جدید در مورد آرکوپتریکس و پتروسورها

نویسنده :نیما
تاریخ:24 فروردین 91-22:02

 

یک پژوهشگر بریتانیایی عقیده دارد، برخلاف تصور معمول پتروسورها که همان خزندگان پرنده عصر دایناسورها هستند، با ظهور پرندگان از بین نرفتند، بلکه در کنار پرندگان به زندگی خود ادامه دادند و تکامل یافتند.

به گزارش سرویس علمی ایسنا، منطقه کرمانشاه، کیتی پرنتیس از دانشگاه بریستول معتقد است پتروسورها حتی با ظهور پرندگان در ۱۶۰ میلیون سال پیش به تکامل خود ادامه دادند.

پرنتیس گفت: ما تصور می‌کردیم که طبق معمول نسل جدید پرندگان با نابودی اولین نسل پرندگان یا همان پتروسورها(خزندگان پرنده) همراه بوده است، اما پتروسورها که ۵۰ میلیون سال قبل از آرکوپتریکس یعنی اولین پرنده از نوع پرندگان کنونی ظهور پیدا کرد، در واقع نه تنها با آمدن پرندگان منقرض نشد، بلکه تکامل واقعی خود را با ظهور پرندگان آغاز و سبک جدیدی از زندگی را اتخاذ کرد.

پتروسورها ۶۵ میلیون سال پیش در زمان انقراض عظیم دایناسورها برای همیشه از بین رفتند، اما تا آن زمان در کنار پرندگان در همزیستی مسالمت‌آمیز به سر می‌بردند.



نوع مطلب : شگفتی‌های طبیعت 

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