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X-WR-CALDESC:Events for Hertfordshire Geological Society
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DTSTART:20200101T000000
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DTSTART;TZID=UTC:20210708T193000
DTEND;TZID=UTC:20210708T210000
DTSTAMP:20260620T072557
CREATED:20210612T141840Z
LAST-MODIFIED:20211021T140447Z
UID:1020-1625772600-1625778000@www.hertsgeolsoc.org.uk
SUMMARY:The Dinosaur - Bird link: A critical overview
DESCRIPTION:Given by Mike Howgate (HGS). \nAbstract: \nTo most interested lay-people and even most vertebrate palaeontologists the theory that birds arose from a group of Theropod dinosaurs is now regarded as an incontestable fact. However there are a handful of dissenters from this supposed certainty. I am one. \nI will start by outlining the position of Archaeopteryx as the quintessential example of an intermediate between two classes of organisms – reptiles and birds\, before considering the various theories which have been put forward to explain which group of reptiles could best be considered the direct ancestor of the avian lineage and whether flight could have originated from the ground – up as suggested by the ‘Dino-Bird link’ supporters. \nIn the final half of the talk will concentrate on two alleged Dino-Birds which featured prominently in the debate. Sinosauropteryx prima\, a compsognathid dinosaur which is supposed to exhibit PROTOFEATHERS and Microraptor gui the alleged four winged flying dinosaur which is an archaeopteryx-like bird and not a theropod dinosaur at all. A more parsimonious ancestor for the avian lineage will be suggested. \nView this talk in the Members’ Section.
URL:https://www.hertsgeolsoc.org.uk/event/the-dinosaur-bird-link-a-critical-overview/
LOCATION:Zoom Talk
CATEGORIES:Talks
ATTACH;FMTTYPE=image/jpeg:https://www.hertsgeolsoc.org.uk/wp-content/uploads/2021/06/Dino-Bird.jpg
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DTSTART;TZID=UTC:20210710T100000
DTEND;TZID=UTC:20210710T163000
DTSTAMP:20260620T072557
CREATED:20210612T143208Z
LAST-MODIFIED:20210703T113001Z
UID:1024-1625911200-1625934600@www.hertsgeolsoc.org.uk
SUMMARY:HGS Summer Event – Chalk Stream Walk – BoxMoor and Chesham
DESCRIPTION:Leaders: Peter Ablett and Paul Jennings \nOver the years the River Bulbourne has been heavily compromised by historical changes. In 2013\, in conjunction with the Environment Agency and other interested parties\, the Box Moor Trust embarked on a restoration project for the Bulbourne. \n\n\n\n\n09:45 meet at Box Moor Trust Center (HP1 2RE) \nWalk through the trusts’ meadows following the restored section of the\nRiver Bulbourne with Peter Ablett \n13:00 Picnic lunch at the Trust Center – it may be worth brining a deck chair \n14:00 Drive to Chesham town centre car park (which one?) \nWalk along the Chess in the company of Paul Jennings\, Chair of the River Chess Association \n  \n\nFor full details click here. \nBook your place \n\n\n\n← Back Thank you for your response. ✨\n\n\n					\n						\n							\n							\n						\n						\n						\n						\n						\n							\n								\n									\n										\n										\n									\n									\n										\n										\n									\n								\n							\n						\n						\n							\n								\n									\n									\n										\n									\n									\n									\n								\n							\n						\n					\n				\n\n\n\nName(required)\n\n \n			\n				\n					\n						\n						\n						\n					\n				\n				\n			 \n	\n\n\nEmail(required)\n\n \n			\n				\n					\n						\n						\n						\n					\n				\n				\n			 \n	\n\n\nPlease book me a place at this event.\n\n \n			\n				\n					\n						\n						\n						\n					\n				\n				\n			\n	\n	\n\n				\n					\n				\n						Submit
URL:https://www.hertsgeolsoc.org.uk/event/hgs-summer-event-chalk-stream-walk-boxmoor-and-chesham/
LOCATION:The Box Moor Trust Centre\, London Road\, Hemel Hempstead\, Hertfordshire\, HP1 2RE\, United Kingdom
CATEGORIES:Field Trips
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