When did J. Illiger describe the order Proboscidea?
J. Illiger described the order Proboscidea in 1811, grouping together elephants and their extinct relatives.
Questions about Proboscidea
Short answers, pulled from the story.
What is the earliest known member of the order Proboscidea?
The earliest known member of this group is Eritherium, which lived in Africa during the Paleocene epoch around 60 million years ago. This ancient creature was tiny compared to modern elephants, weighing only about 3 kilograms.
How large could the Columbian mammoth become on islands?
The Columbian mammoth colonized these islands and became the pygmy mammoth weighing around 1,000 kilograms. Small woolly mammoths survived on Wrangel Island until roughly 4,000 years ago though scientists now debate whether they qualify as true dwarfs.
Which proboscidean family lacks upper tusks but possesses lower ones over 2 meters long?
Deinotherium lacks upper tusks but possesses lower ones reaching lengths over 2 meters. Deinotheres possibly lived in herds based on trackways discovered in Late Miocene Romania.
When did J. Illiger describe the order Proboscidea and what families are included in its taxonomy?
J. Illiger described the order Proboscidea in 1811, grouping together elephants and their extinct relatives. Taxonomy of Proboscidea includes families like Deinotheriidae Mammutidae and Elephantidae with numerous extinct genera.