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Biology 28 Online
OpenStudy (anonymous):

Fossil sponges are among the oldest known animal fossils. true or false

OpenStudy (igreen):

Poriferans are commonly referred to as sponges. An early branching event in the history of animals separated the sponges from other metazoans. As one would expect based on their phylogenetic position, fossil sponges are among the oldest known animal fossils, dating from the Late Precambrian. http://www.ucmp.berkeley.edu/porifera/porifera.html

OpenStudy (igreen):

The answer is in there..tell me what you think.

OpenStudy (anonymous):

So it is true. thank you !

OpenStudy (igreen):

Yes, you got it.

OpenStudy (igreen):

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