Ancestors of animals... - Answer✔️✔️-diverged from ancient fungi,
between 675 million and 800 million years ago, believed to be a
suspension feeder similar to Choanoflagellates
Choanoflagellates - Answer✔️✔️-suspension feeder similar to
animalia's common ancestor
4 distinct periods of evolution - Answer✔️✔️--neoproterozoic era
-paleozoic era
-mesozoic era
-cenozoic era
Neoproterzoic Era - Answer✔️✔️--1 billion to 542 million years ago
-known as Ediacara biota, aren't closely related to today's sponges,
alga, or animals.
Paleozoic Era - Answer✔️✔️--542-251 million years ago
-Contained Cambrian Explosion
-Cambrian period, Ordovician period, Silurian period, and Devonian
period
-Fish became top predators, arthropods became terrestrial,
amphibians and amniotes developed on land.
Cambrian period - Answer✔️✔️--led to first arthropods, chordates,
and echinoderms
2
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller SophiaBennett. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £8.19. You're not tied to anything after your purchase.
