Nonrandomness in prebiotic peptide synthesis Sanjay TyagiCyril Ponnamperuma OriginalPaper Pages: 391 - 399
The fossil record and estimating divergence times between lineages: Maximum divergene times and the importance of reliable phylogenies Charles R. Marshall OriginalPaper Pages: 400 - 408
Phylogeny of the major tetrapod groups: Morphological data and divergence dates Michael J. Benton OriginalPaper Pages: 409 - 424
Molecular homology and DNA hybridization Anthony H. BledsoeFrederick H. Sheldon OriginalPaper Pages: 425 - 433
DNA/DNA hybridization studies of the carnivorous marsupials. I: The intergeneric relationships of bandicoots (Marsupialia: Perameloidea) John A. W. KirschMark S. SpringerAllan W. Dickerman OriginalPaper Pages: 434 - 448
Conservation of intron position indicates separation of major and variant H2As is an early event in the evolution of eukaryotes A. van DaalE. M. WhiteM. A. Gorovsky OriginalPaper Pages: 449 - 455
Simple repetitive sequences are associated with differentiation of the sex chromosomes in the guppy fish Indrajit NandaWolfgang FeichtingerJörg T. Epplen OriginalPaper Pages: 456 - 462
Small ribosomal subunit RNA sequences, evolutionary relationships among different life forms, and mitochondrial origins Yves Van de PeerJean-Marc NeefsRupert De Wachter OriginalPaper Pages: 463 - 476