. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. 210 P. Hershkovitz INFRACLASS METATHERIA COHORT MICROBIOTHERIOMORPHIA COHORT DIDELPHIMORPHIA ORDER DIDELPHOIDIA. grade EUTHERIA 'METATHERIA ^ SUBCLASS THERIA Fig. 2: Diagram representing phylogenetic relationship of living cohorts and orders of Marsu- piaha (M etat her i a). See page 206 for explanation of evolutionary markers I—X. Bar = 3 cm. pattern evolved independently from the separate lower ankle joint pattern more than once, and that both patterns are present
. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. 210 P. Hershkovitz INFRACLASS METATHERIA COHORT MICROBIOTHERIOMORPHIA COHORT DIDELPHIMORPHIA ORDER DIDELPHOIDIA. grade EUTHERIA 'METATHERIA ^ SUBCLASS THERIA Fig. 2: Diagram representing phylogenetic relationship of living cohorts and orders of Marsu- piaha (M etat her i a). See page 206 for explanation of evolutionary markers I—X. Bar = 3 cm. pattern evolved independently from the separate lower ankle joint pattern more than once, and that both patterns are present in more than a single line of both American and Austrahan marsupials. It is also shown that the morphology of the Dromiciops astragalus and calcaneus is essentially didelphoid or ameridelphian, and little dif- ferent from that of the American mouse opossum Gracilinanus marica. Contrary to Szalay, a postulated Cretaceous or Paleocene marsupial with the distinctive characters of Dromiciops could no more be ancestral to modern Australian mar-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Zoologisches Forschungsinstitut und Museum Alexander Koenig. Bonn : Das Forschungsinstitut
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