Dlaczego rodzaje długotrwałe są rzadkie

Authors

  • Jerzy Trammer

Abstract

WHY ARE LONG-LIVING GENERA RARE? Summary To answer the question "Why are long-lived genera rare?" the following hipothesis is suggested. They are rare because only cosmopolitan genera, that are rare, tend to have long geologic ranges.

Issue

Section

Geochemia, mineralogia, petrologia