Exam 12: Paleozoic Life History Invertebrates

In the marine ecosystem, a shark would be classified as an infaunal and benthic organism.

Shallow water fauna and phytoplankton are stressed during glaciations due to ____.

Mass extinctions at the end of the Ordovician occurred because of ____.

Archaeocyathid, bryozoan, and stromatoporoid fossils indicate which type of environment?

Benthic plants that live on the seafloor are called ____________________ and benthic animals that live on the seafloor are called ____________________.

____________________ make their own food.

The ____________________ ____________________ provides paleontologists with a unique look at the soft-bodied organisms that thrived in the Middle Cambrian.

Pelagic fish are part of the benthos.

From a human time perspective, most mass extinctions would appear to ____.

Animals that ingest sediment and extract the nutrients from it are called _________________________.