Back
Orobodinium rete
From Fensome et al., 2019:
Orobodinium rete Gocht and Wille, 1990, p.702–703, figs.23a–b,24a–b. Holotype: Gocht and Wille, 1990, figs.24a–b. Age: early Bathonian.
---------------------------------------------------------------------------------------------------
Locus typicus: Highway NW of Gruibingen, Baden-Wuerttemberg, Germany
Stratum typicum: Early Bathonian (zigzag Zone)
Translation Gocht and Wille, 1990: LPP
Original description (Gocht and Wille, 1990)
Derivatio nominis: Latin rete - net.
Holotype: The specimen shown in Fig. 24a-b. Specimen 1690/1, cross-stage number 16.0 x 99.2 (ZEISS microscope, see above). Locus typicus: Temporary outcrop at the highway construction site approximately 3 km northwest of Gruibingen, Goppingen district, Baden-Württemberg. Stratum typicalum: Lower Bathonian (zigzag zone). Phosphorite nodule from the Brown Jurassic epsilon clay.
Diagnosis: Small spherical cysts, without paratabulation. Surface with flat ornamentation, often vermiculate, more often incompletely reticulate. Archaeopyle and operculum typical of the genus Orobodinium.
Dimensions: Holotype 0 25 μm, other specimens (10 in total) 24-29 μm.
Description: The spherical shape and type of archaeopyle correspond to the type species O. automobile. The difference lies in the reticulate to vermiculate ornamentation, which is relatively low. The muri are often looped and do not always join together to form complete meshes. Also noteworthy is a tendency toward bireticulation, with a second generation of smaller and more delicate meshes within the larger ones. This distinguishes O. rete from O. sp. C, in which the muri are straight, the meshes complete, and of approximately uniform size; bireticulation was not observed (cf. Fig. 25).
Stratigraphic distribution: Lower Bathonian (samples 1, 4).
Note: In Orobodinium cf. rete (Fig. 19a-b), in contrast to the typical O. rete, the reticulation is more reduced and more tightly meshed ( 0 um 24 μm; Lower Bathonian of Neidlingen, sample 4).
Orobodinium rete Gocht and Wille, 1990, p.702–703, figs.23a–b,24a–b. Holotype: Gocht and Wille, 1990, figs.24a–b. Age: early Bathonian.
---------------------------------------------------------------------------------------------------
Locus typicus: Highway NW of Gruibingen, Baden-Wuerttemberg, Germany
Stratum typicum: Early Bathonian (zigzag Zone)
Translation Gocht and Wille, 1990: LPP
Original description (Gocht and Wille, 1990)
Derivatio nominis: Latin rete - net.
Holotype: The specimen shown in Fig. 24a-b. Specimen 1690/1, cross-stage number 16.0 x 99.2 (ZEISS microscope, see above). Locus typicus: Temporary outcrop at the highway construction site approximately 3 km northwest of Gruibingen, Goppingen district, Baden-Württemberg. Stratum typicalum: Lower Bathonian (zigzag zone). Phosphorite nodule from the Brown Jurassic epsilon clay.
Diagnosis: Small spherical cysts, without paratabulation. Surface with flat ornamentation, often vermiculate, more often incompletely reticulate. Archaeopyle and operculum typical of the genus Orobodinium.
Dimensions: Holotype 0 25 μm, other specimens (10 in total) 24-29 μm.
Description: The spherical shape and type of archaeopyle correspond to the type species O. automobile. The difference lies in the reticulate to vermiculate ornamentation, which is relatively low. The muri are often looped and do not always join together to form complete meshes. Also noteworthy is a tendency toward bireticulation, with a second generation of smaller and more delicate meshes within the larger ones. This distinguishes O. rete from O. sp. C, in which the muri are straight, the meshes complete, and of approximately uniform size; bireticulation was not observed (cf. Fig. 25).
Stratigraphic distribution: Lower Bathonian (samples 1, 4).
Note: In Orobodinium cf. rete (Fig. 19a-b), in contrast to the typical O. rete, the reticulation is more reduced and more tightly meshed ( 0 um 24 μm; Lower Bathonian of Neidlingen, sample 4).