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Springer, Mark S.; Kirsch, John A. W.
(detail)
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1993 |
A molecular perspective on the phylogeny of placental mammals based on mitochondrial 12S rDNA sequences, with special reference to the problem of the Paenungulata.
Jour. Mamm. Evol.
1(2): 149-166. 2 tabs. 7 figs. June 1993.
–All analyses united Loxodonta and Dugong, with Procavia as their sister group, supporting the Paenungulata clade.
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Lavergne, Anne; Douzery, Emmanuel; Stichler, Todd; Catzeflis, François M.; Springer, Mark S.
(detail)
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1996 |
Interordinal mammalian relationships: evidence for paenungulate monophyly is provided by complete mitochondrial 12S rRNA sequences.
Molec. Phylogenetics & Evol.
6(2): 245-258. Oct. 1996.
–The most strongly supported clade among mammalian orders was found to be the Paenungulata (Sirenia + Proboscidea + Hyracoidea); the Tethytheria (Sirenia + Proboscidea) grouping was also observed but less stably supported. This may be due to a short elapsed time between the divergences of hyracoids and tethytheres. Paenungulates are estimated to have originated at the end of the Cretaceous.
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Springer, Mark S.; Cleven, Gregory C.; Madsen, Ole; De Jong, Wilfried W.; Waddell, Victor G.; Amrine, Heather M.; Stanhope, Michael J.
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1997 |
Endemic African mammals shake the phylogenetic tree.
Nature
388(6637): 61-64. 3 tabs. 1 fig. July 3, 1997.
–Reports evidence from DNA sequences that supports a close relationship of sirs. with hyracoids, proboscideans, golden moles, elephant shrews, and aardvarks.
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Amrine, Heather M.; Springer, Mark S.
(detail)
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1999 |
Maximum-likelihood analysis of the tethythere hypothesis based on a multigene data set and a comparison of different models of sequence evolution.
Jour. Mamm. Evol.
6(2): 161-176. 7 tabs. 1 fig. June 1999.
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Meredith, Robert W.; Gatesy, John; Murphy, William J.; Ryder, Oliver A.; Springer, Mark S.
(detail)
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2009 |
Molecular decay of the tooth gene enamelin (ENAM) mirrors the loss of enamel in the fossil record of placental mammals.
PLoS Genetics
5(9): 1-12. 6 figs. e1000634. doi: 10.1371/journal.pgen.1000634 Sept. 4, 2009.
–Includes Dugong dugon in cladogram (fig. 1, p. 3), showing that its enamelin gene is not degenerate (despite the vestigial state of its tooth enamel). Sirs. are not mentioned in the text.
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