The Fossil Record of Brachiopods Shows

question 31

Multiple Choice

The fossil record of brachiopods shows

• A)they have only recently branched off from molluscan bivalves.
• B)they have existed nearly unchanged in design since the Ordovician times.
• C)they have evolved rapidly to displace many molluscs.
• D)they have never been common and are now going extinct.
• E)they are now much bigger than they were in earlier times.

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Definitions:

Driveline Arrangement

The layout and components of a vehicle's system that delivers power from the transmission to the drive wheels.

Standpipe

A vertical pipe designed to provide a point of access to a water supply, often used by firefighters for hose connections.

Zerk Fittings

Grease fittings that allow for the easy application of lubricant to mechanical systems with a grease gun.

Trunnions

The cylindrical protrusions used as a pivot or mounting point, typically on cannons or similar devices, but also in various machinery.