A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

According to fossil findings, mammals first appeared on earth approximately how long ago? [a] 50 million years [b] 65 million years [c] 1 billion years [d] 4 billion years

  • This Question is Closed
  1. shreehari499
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Hi! @vita955 Before i help you out with it, why dont you give it a guess?

  2. shreehari499
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Hi! @vita955 Before i help you out with it, why dont you give it a guess?

  3. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1 billion

  4. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ?

  5. shreehari499
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    No..the first placental mammals were present approximately 65 million years ago..An early mammal fossil discovered in Mongolia led to researchers asserting that the origins of placental mammals, which include humans, can be dated to approximately 65 million years ago.

  6. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    thank you!

  7. shreehari499
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Welcome! Happy OpenStudying!!

  8. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.