{"id":23101,"date":"2017-12-01T02:04:16","date_gmt":"2017-12-01T02:04:16","guid":{"rendered":"http:\/\/www.bnreport.com\/fossilised-eggs-shed-light-on-reign-of-pterosaurs\/"},"modified":"2017-12-01T02:04:19","modified_gmt":"2017-12-01T02:04:19","slug":"fossilised-eggs-shed-light-on-reign-of-pterosaurs","status":"publish","type":"post","link":"https:\/\/www.bnreport.com\/en\/fossilised-eggs-shed-light-on-reign-of-pterosaurs\/","title":{"rendered":"Fossilised eggs shed light on reign of pterosaurs"},"content":{"rendered":"<p>The largest clutch of pterosaurs eggs ever discovered suggests that the extinct flying reptiles may have gathered together in vast colonies to lay their eggs.<\/p>\n<p>More than 200 eggs were discovered at one location in China.<\/p>\n<p>Little is known about how the pterosaurs reproduced.<\/p>\n<p>The find suggests that hatchlings were probably incapable of flight when they emerged from the egg, and needed some parental care.<\/p>\n<h2>Predator attack<\/h2>\n<p>Fossilised pterosaur eggs and embryos are extremely rare. Until now only a handful of eggs have been found, in Argentina and north-western China.<\/p>\n<p>The large collection of eggs suggests pterosaurs may have nested in colonies, where they defended their offspring from predator attack.<\/p>\n<p>Pterosaur experts Xiaolin Wang of the Institute of Vertebrate Palaeontology and Paleoanthropology in Beijing and Alexander Kellner of the National Museum of Brazil in Rio de Janeiro discovered the fossils.<\/p>\n<p>The 215-plus eggs could not have been laid by the same female, said Dr Kellner.<\/p>\n<p>An almost complete skeleton of a hatchling shows that bones related to flight were less developed than bones of the hind limb, indicating that newborns might have been able to walk but not fly. <\/p>\n<p>&#039;&#039;That implies some parental help was needed for the hatchlings,&#039;&#039; he told BBC News.<!--more--><\/p>\n<h2>&#039;Crucial advance&#039;<\/h2>\n<p>They will continue to search for new fossils, he added, to try to get a more detailed understanding of &#039;&#039;the first vertebrates that conquered the air some 225 million years ago and that went extinct, without leaving any descendants some 66 million years ago&#039;&#039;.<\/p>\n<p>The eggs belong to a pterosaur species known as Hamipterus tianshanensis, which was first discovered in 2005 in the Turpan-Hami Basin of north-western China.<\/p>\n<p>Geological evidence suggests large numbers of the flying reptiles died in a storm in the Early Cretaceous period, about 120 million years ago.<\/p>\n<p>Commenting on the research, Charles Deeming of the University of Lincoln, said it raised many questions, such as how many eggs were laid at a time.<\/p>\n<p>&#039;&#039;The work is a crucial advance in understanding pterosaur reproduction,&#039;&#039; Dr Deeming said.<\/p>\n<p>&#039;&#039;Hopefully additional finds of equally spectacular fossils will help us answer such questions for pterosaurs and allow us to paint an increasingly complete picture of reproduction in these extinct species.&#039;&#039;<\/p>\n<p>The research is published in the journal, Science.<\/p>\n<p>Follow Helen on <a href=\"https:\/\/twitter.com\/hbriggs?lang=en-gb\" rel=\"noreferrer\" target=\"_blank\">Twitter<\/a>.<\/p>\n<p><strong><a href=\"https:\/\/blockads.fivefilters.org\/\" rel=\"noreferrer\" target=\"_blank\"><\/a><\/strong> <a href=\"https:\/\/blockads.fivefilters.org\/acceptable.html\" rel=\"noreferrer\" target=\"_blank\"><\/a><\/p>\n<p><a href=\"http:\/\/www.bbc.co.uk\/news\/science-environment-42177532\" rel=\"noreferrer\" target=\"_blank\">Original Article<\/a><\/p>\n<p> [contf] [contfnew]         <img decoding=\"async\" src=\"http:\/\/www.bnreport.com\/wp-content\/uploads\/2017\/12\/175x175bb.jpg\"\/> <\/p>\n<h5><a href=\"http:\/\/www.bbc.com\/news\" rel=\"noreferrer\" target=\"_blank\">BBC<\/a><\/h5>\n<p> [contfnewc] [contfnewc]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The largest clutch of pterosaurs eggs ever discovered sugges..<\/p>\n","protected":false},"author":1,"featured_media":23102,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49],"tags":[],"class_list":["post-23101","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - 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