Calcareous Hard Parts

Some articles on calcareous hard parts, calcareous:

Permian–Triassic Extinction Event - Extinction Patterns - Possible Explanations of These Patterns
... vulnerable marine organisms were those that produced calcareous hard parts (i.e ... and had low metabolic rates and weak respiratory systems—notably calcareous sponges, rugose and tabulate corals, calciate brachiopods, bryozoans, and echinoderms ... Close relatives without calcareous hard parts suffered only minor losses, for example sea anemones, from which modern corals evolved ...

Famous quotes containing the words parts and/or hard:

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