The interrelationships of pelycosaursPublished in Breviora, in 1983, in volume 473, pages 1-35Ruthiromia elcobriensis, a new pelycosaur from El Cobre Canyon, New MexicoPublished in Breviora, in 1983, in volume 474, pages 1-26New or problematic Anolis from Colombia. I. Anolis calimae, new species, from the cloud forest of Western ColombiaPublished in Breviora, in 1983, in volume 475, pages 1-11Townsend's unmapped North Atlantic right whales (Eubalaena glacialis)Published in Breviora, in 1983, in volume 476, pages 1-8
Ruthiromia elcobriensis, a new pelycosaur from El Cobre Canyon, New MexicoPublished in Breviora, in 1983, in volume 474, pages 1-26New or problematic Anolis from Colombia. I. Anolis calimae, new species, from the cloud forest of Western ColombiaPublished in Breviora, in 1983, in volume 475, pages 1-11Townsend's unmapped North Atlantic right whales (Eubalaena glacialis)Published in Breviora, in 1983, in volume 476, pages 1-8
New or problematic Anolis from Colombia. I. Anolis calimae, new species, from the cloud forest of Western ColombiaPublished in Breviora, in 1983, in volume 475, pages 1-11Townsend's unmapped North Atlantic right whales (Eubalaena glacialis)Published in Breviora, in 1983, in volume 476, pages 1-8
Townsend's unmapped North Atlantic right whales (Eubalaena glacialis)Published in Breviora, in 1983, in volume 476, pages 1-8