. Bulletin of the British Museum (Natural History), Botany. . 21 Figs 20-21 Rutilaria hannai subsp. hannai. valve view, x 1000, CAS 104086, Cantua Creek, Fresno County, California, holotype. \ Cingulum ex quatuor taeniis constans; valvocopula et copula II quaeque parte exteriori c. 6 |xm alta; copula III parte exteriori c. 5 jxm alta; copula IV parte exteriori c. 2 |xm alta; valvocopula, copula II et copula III areolis in striis verticalibus 27-28 in 10 jxm, copula IV areolis in striis verticalibus 34-36 in 10 jxm. Central portion of the valve broadly elliptical to circular; valves
. Bulletin of the British Museum (Natural History), Botany. . 21 Figs 20-21 Rutilaria hannai subsp. hannai. valve view, x 1000, CAS 104086, Cantua Creek, Fresno County, California, holotype. \ Cingulum ex quatuor taeniis constans; valvocopula et copula II quaeque parte exteriori c. 6 |xm alta; copula III parte exteriori c. 5 jxm alta; copula IV parte exteriori c. 2 |xm alta; valvocopula, copula II et copula III areolis in striis verticalibus 27-28 in 10 jxm, copula IV areolis in striis verticalibus 34-36 in 10 jxm. Central portion of the valve broadly elliptical to circular; valves 55-170 p,m long, 28-40 |xm wide; projections 4-8 jxm broad, the longer ones subcapitate. Striae opposite the cen- tral area consisting of 1-6 areolae. Stem of periplekton 4-6 (xm in diameter, 3-4 (xm distant from that of the sibling valve, ring with a slight bulge at the head of the stem, 15 \ x 13-14 |xm. Cingulum consisting of four copulae; valvocopula and copula II with the pars exterior c. 6 jxm deep; copula III with the pars exterior c. 5 |xm deep; copula IV with the pars exterior c. 2 (xm deep; valvocopula, copula II and copula III with areolae in vertical striae 27-28 in 10 |xm; copula IV with areolae in vertical striae 34-36 in 10 |xm. Late Eocene. Bassendorf Shale, south end of Coos Bay, Coos County, Oregon, , California Academy of Sciences sample no 1612, leg. Schenk (BM 82237, CAS 216045). Kreyenhagen Shale, mined earth by Panoche Road,. 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 Natural History Museum (London). Andover : Intercept
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