• Publications
  • Influence
Revision of the cassiduloid echinoids
  • 69
  • 11
The Red Bird section of the Upper Cretaceous Pierre Shale in Wyoming, with a section on a new echinoid from the Cretaceous Pierre Shale of eastern Wyoming
______________________________________ Introduction. __________________________________ Earlier work.__________________________________ Geographic and geologic setting._________________ RegionalExpand
  • 85
  • 7
  • PDF
The poor fossil record of the regular echinoid
The fossil record of echinoids is poor because soon after death they break apart into isolated plates. In the present seas regular echinoid species outnumber irregular species; whereas, in theExpand
  • 124
  • 6
Evolutionary trends in Paleozoic echinoids
In evolution of the Echinocystoidea the test becomes flattened, the ambulacra expand adorally, pores shift from near the perradial suture to near the adradial suture, tubefeet become enclosed,Expand
  • 58
  • 6
Fossil Spatangoid Echinoids of Cuba
Kier, Porter M. Fossil Spatangoid Echinoids of Cuba . Smithsonian Contributions to Paleobiology, number 55, 336 pages, frontispiece, 45 figures, 90 plates, 6 tables, 1984.—The fossil spatangoidExpand
  • 44
  • 5
  • PDF
Revision of the oligopygoid echinoids
  • 22
  • 5
...
1
2
3
4
5
...