TY - JOUR AU - Poinar, Jr., George O. AU - Chambers, Kenton L. PY - 2019/10/31 Y2 - 2024/03/29 TI - Strombothelya gen. nov., a fossil angiosperm with two species in mid-Cretaceous Myanmar amber JF - Journal of the Botanical Research Institute of Texas JA - J. Bot. Res. Inst. Texas VL - 13 IS - 2 SE - PALEOBOTANY DO - 10.17348/jbrit.v13.i2.797 UR - https://journals.brit.org/jbrit/article/view/797 SP - 451-460 AB - <p><em>Strombothelya</em>, a new genus of fossil angiosperms from Myanmar amber deposits, is represented by 2 flowers that are here described as separate species. Flowers of <em>Strombothelya</em> have 5 spreading, more or less distinctly veined sepals. Petals are absent. There are 10 inwardly arching stamens and a half-inferior ovary, whose broadly conic superior portion terminates in 1 or 3 stout, columnar, apically truncate styles. The superior portion has a papillate surface that was probably nectarifer-ous. The inferior portion of the ovary in both species is obconic and 5- or 10-ribbed. The fossils are comparable in certain respects to the genus <em>Tropidogyne</em>, described earlier from the same amber deposits. The 3 species of <em>Tropidogyne</em> have flowers with 5 or 10 stamens and 2 or 3 slender, curved, acutely-tipped styles. The inferior portion of the ovary is strongly 10-ribbed, while the superior portion is flat or cushion-shaped and bears a lobed nectar-disc. <em>Strombothelya</em> and <em>Tropidogyne</em> inhabited a Cretaceous araucarian rainforest, which may have been located in the Southern Hemisphere continent of Gondwana.</p> ER -