Quantum redactiones paginae "Astroblema Chicxulub" differant

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* "[https://www.lpi.usra.edu/features/chicxulub/ International Consensus — Link Between Asteroid Impact and Mass Extinction Is Rock Solid]" (4 Martii 2010) apud ''Lunar and Planetary Institute''
* Bob Yirka, "[https://phys.org/news/2017-11-analysis-chicxulub-asteroid-struck-vulnerable.html New analysis of Chicxulub asteroid suggests it may have struck in vulnerable spot]" (10 Novembris 2017) apud ''Phys.org''
* "[http://www.somerikko.net/impacts/database.php?id=29 Chicxulub]" apud ''Impact Structures of the World''