来自MSN1 个月
Why These 7 Ancient Predators Went Extinct
This ancient predator went extinct ... animals started closing down shop during the last ice age. The La Brea Tar Pits have a lot of unique fossils for visitors to see, including some fascinating ...
BBC7 年
Giant sloth remains found in Los Angeles
La Brea Tar Pits Other ancient large mammals that became extinct around the same era - following the last ice age - include massive camels, mastodons and mammoths. The remains of an ancient camel ...
PBS6 年
Becoming a Fossil:
tar (like the famous La Brea Tar Pits in Los Angeles), or amber, in which ancient insects have been found, wonderfully preserved. Rare but highly informative are fossils created by a sudden event ...