Harrisichara tuberculata ( Lyell, 1826 ) Grambast, 1957

Sanjuan, Josep & Martín-Closas, Carles, 2014, Taxonomy and palaeobiogeography of charophytes from the Upper Eocene- Lower Oligocene of the Eastern Ebro Basin (Catalonia, NE Spain), Geodiversitas 36 (3), pp. 385-420 : 407-408

Harrisichara tuberculata ( Lyell, 1826) Grambast, 1957

( Fig. 9 J-L)

Chara tuberculata Lyell, 1826: 94 , pl. 13, figs 7, 8.

Harrisichara tuberculata – Grambast 1957: 10, pl. 6, figs 1-3, 8-10.

DISTRIBUTION. — Harrisichara tuberculata is widely distributed in the Upper Priabonian to Lower Rupelian of Europe. In France, this species occurs in the Paris Basin ( Grambast 1958; Riveline 1986), the north-eastern part of the Languedoc basin (Feist-Castel 1971) and the Aquitaine ( Feist & Ringeade 1977) and Provence ( Grambast 1958; Feist-Castel 1977a) basins. H. tuberculata was reported in the Isle of Wight, England by Feist-Castel (1977b) and Riveline (1986), and in Belgium ( Grambast 1958; Riveline 1986), Germany ( Riveline 1986; Schwarz 1997) and Romania ( Baciu & Feist 1999). In Spain, Adrover et al. (1982) found this species in the locality Barranco de la Calera (Teruel Province), in the Iberian Chain and it is especially common in the eastern Ebro Basin ( Choi 1989; Feist et al. 1994; Sanjuan & Martín-Closas 2012). In the area studied, this species occurs within Upper Priabonian-Lower Rupelian deposits from Oristà, Santa Maria d’Oló, Torre Casanova (Moià), Moià, Santpedor, Rubió, Sarral and Solivella ( Tables 2-4 ).

DESCRIPTION

Gyrogonite large, 717-1040 µm high (mean 901 µm), and 670-940 µm wide (mean 802 µm), prolate spheroidal in shape with an isopolarity index of 86-125 (mean 112). Spiral cells flat or concave. Nine to eleven (frequently nine), convolutions are visible laterally. Ŋe ornamentation is typically formed by large, regularly spaced tubercles, which have a variable size ranging from 54-90 µm. In some cases, tubercles may be joined. Apex flat or slightly convex and ornamented with tubercles as well.Base elongated, terminating in a short column.

Figures

FIG. 9. — Charophytes from Sant Boi, Artés and lateral south-western Formations, Ebro Basin: A-C, Harrisichara vasiformis form vasiformis-tuberculata Feist-Castel,1977, Serrat Rodó,Sobremunt road and Cal Carreter sections; A, apical view, no. 80113 MGSCB sample SBR-1; B, lateral view, no. 80114 MGSCB, sample SBR-1; C, basal view, no.80115 MGSCB, sample SBR-1;D-I, Harrisichara lineata Grambast,1957,El Perers section;D, apical view, no. 80116 MGSCB,sample PE-1; E, lateral view, no. 80117 MGSCB,sample PE-1; F, basal view, no. 80118 MGSCB, sample PE-1; G, lateral view, no. 80119 MGSCB, sample PE-1; H, lateral view, no. 80120 MGSCB, sample PE-1; I, lateral view, no. 80121 MGSCB, sample PE-1; J-L, Harrisichara tuberculata (Lyell, 1826), Oristà, Santa Maria d’Oló, Torre Casanova, Moià, Santpedor, Rubió and Sarral sections and Solivella outcrop; J, apical view, no. 80122 MGSCB, sample MO-1; K, lateral view, no. 80123 MGSCB, sample SO-2; L, basal view, no. 80124 MGSCB, sample MO-1. Scale bar: 500 µm.