Alan Hildebrand Biography

Historical biography and chronological timeline for Alan Hildebrand, based on 1 World History Database records associated with United States of America.

1 records1990–19901 events1 places

Chronological biography

1990

Chicxulub Crater1990

Science / Astronomy · Chicxulub Crater

Idetifies the 180 mile wide Chicxulub crater in Mexico, and propose it as being the most likely candidate for the catastrophic environmental changes that killed off 70% of all species around 65 million years ago

Record provenance

This biography is assembled from World History Database records filtered by country and personal-name fields. Exact duplicate display records are removed. The database is an index rather than a complete narrative biography; formal research should verify entries against relevant primary or specialist sources.