Stories tagged lemurs

May
19
2009

Darwinius  masillae
Darwinius masillaeCourtesy PLoS
There you were, thinking that lemurs were barely your relatives. It’s okay, I understand. I mean, Prosimians? Really? Sure, we’re all members of the primate family, but, like, two steps removed, like those cousins in Kentucky your mom pretends don’t exist. Or something. Prosimians are the non-human evolutionary line, how primitive. Prosimians are like NASCAR, and Anthropoids, like apes and humans, are like the DAR.

But, just like every president has an embarrassing brother, so too are we related to those furry simple primates. Now, we have proof! Scientists have found a 47 million years old human ancestor, the link between these early primates and human evolutionary lineage.

“Ida,” or Darwinius masillae, was actually discovered in 1983 by a private collector, although the fossil now belongs to the Natural History Museum of Oslo. An international team of scientists has been secretly conducting an in-depth study of Ida for the past two years. Now her skeleton is 95 percent complete.The fossil is significantly older than most fossils that explain human evolution, and, unlike Lucy and other famous primate fossils, this fossil was not found in Africa’s Cradle of Mankind; Ida is a European fossil (someone call Guinness, I just set a world record for using the word “fossil” the most times in a sentence).

Arms and hands of Darwinius  masillae
Arms and hands of Darwinius masillaeCourtesy PLoS
Ida was preserved with a full stomach, so we know that she was an herbivore. I hope that in 47 million years, scientists discover me and determine that humans subsisted mainly on a diet of Cheetos and grape soda. That would be pretty awesome. Her skeleton is pretty similar to that of modern-day lemurs, but she lacks a grooming claw and a row of teeth fused together called a “toothcomb.” She also has nails instead of claws, and teeth similar to small monkeys. She had forward facing eyes, like ours, and opposable thumbs.

Foot structure of Darwinius masillae
Foot structure of Darwinius masillaeCourtesy PLoS
What really links Ida to humans is a bone in her foot, called the talus. Her talus is nearly identical to your talus, only a lot smaller. Ida serves as a sort of “missing link,” a key part of the story of human evolution. So, you know, no big.

Three new mouse lemur species were recently discovered in Madagascar. This African island was already a global biodiversity hotspot and these newly found tiny creatures just add to that fact.