期刊
ALCHERINGA
卷 34, 期 3, 页码 265-272出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/03115511003659622
关键词
Dermochelyoid; Miria Formation; Maastrichtian; high palaeolatitude
类别
资金
- Australian Research Council
- La Trobe University
- Western Australian Museum
The isolated scapula of a chelonioid sea turtle is described from the Upper Cretaceous (upper Maastrichtian) Miria Formation of the Giralia Ranges in Western Australia. Character states including the wide angle of divergence between the scapular processes (possibly reaching 140 degrees), projection of the glenoid on a constricted scapular neck, and highly vascular glenoid articular surfaces suggest affinity with dermochelyoidsthe most diverse and geographically widespread clade of Mesozoic chelonioids. The Miria Formation chelonioid scapula constitutes the first definitive record of a Late Cretaceous sea turtle from Australia and is one of the few occurrences thus far documented from Upper Cretaceous-Paleogene deposits in the Southern Hemisphere.
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