Boueina, F. Toula, 1884

Vachard, D, Krainer, K & Lucas, SG, 2015, Late Early Permian (late Leonardian; Kungurian) algae, microproblematica, and smaller foraminifers from the Yeso Group and San Andres Formation (New Mexico; USA), Palaeontologia Electronica (English ed.) 3 (8), pp. 1-77 : 14

Genus BOUEINA ?

Description. Cylindrical Boueineae with medium, tangled, longitudinal medullary threads with long segments of tubes; and fine, oblique, and one time branching, radial or oblique cortical threads. The subdermal zone shows fine terminal branchlets (and very rarely very small deltoid terminations). No reproductive organs obvious.

Composition. Boueina ? tubulata n. sp.; B.? crassundia n. sp.; Boueina sp. sensu Maslov (1973, plate 12, figure 4).

Remarks. Boueina ? differs from true Boueina by having less ramification orders in the cortical zone, less difference in filament diameters between the cortical and medullar zones, and shorter and more rectilinear medullar siphons (see Elliott, 1970, table 2). These differences are presently insufficient to permit the description of a new genus. The coeval genus Nanjinophycus Mu and Riding, 1983 (from the late Bolorian = latest Kungurian = Misellina claudiae Deprat fusulinid zone of the Nanjing area in China), differs fundamentally by the cortex of typically gymnocodiacean deltoid terminations. Moreover, incomplete and/or abraded fragments may be relatively identical, due to relatively similar cortical and medullar siphons.

Occurrence. Kungurian (late Leonardian) of New Mexico. Middle Permian of Armenia ( Maslov, 1973).