Which conclusion is best supported by the diagram?
Trilobites and gastropods are the youngest fossils.
Crinoids and gastropods have lived during the same time period.
Ferns have existed for a longer period of time than coral.
Every ammonite fossil is older than the gastropod fossils.
![Which conclusion is best supported by the diagramTrilobites and gastropods are the youngest fossilsCrinoids and gastropods have lived during the same time perio class=](https://us-static.z-dn.net/files/d5d/a465cc1bcc7d9d4c73f2250135df4e53.png)