كتب ذات صلة

The type species of the Ordovician trilobite genus Isotelus I. gigas Dekay, 1824

The paleontology of the Niagaran limestone in the Chicago area

New trilobites from the Maquoketa beds of Fayette county, Iowa

A monograph of the trilobites of North America: with coloured models of the species ...

• Upper Cambrian to Lower Ordovician conodont biostratigraphy and biofacies, Rabbitkettle Formation, District of Mackenzie
  المؤلفون: Ludvigsen, Rolf. ,  Landing, Ed.
• Silurian trilobites from the northern Yukon Territory
  المؤلفون: Ludvigsen, Rolf. ,  Tripp, Ronald P.
• The Ordovician trilobite Pseudogygites Kobayashi in eastern and Arctic North America
  المؤلفون: Ludvigsen, Rolf.

• The water-striders of Ontario : (Heteroptera: Gerridae)
  المؤلفون: Cheng, Lanna. ,  Fernando, C. H.
• The vegetation and phytogeography of coastal southwestern James Bay
  المؤلفون: Riley, J. L. ,  McKay, Sheila M.
• Variation in the jaw musculature of the avian family Vireonidae
  المؤلفون: Barlow, Jon C. ,  Orenstein, Ronald I.