Eobaatar sp.
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publication ID |
https://doi.org/ 10.26879/514 |
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persistent identifier |
https://treatment.plazi.org/id/03CC1405-FFF5-FFC9-FB91-777EFAB0EEB9 |
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treatment provided by |
Felipe |
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scientific name |
Eobaatar sp. |
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“Plagiaulacida” indet.
Plagiaulacidae / Eobaataridae indet.
rian Range and borders the Tertiary basins of the Ebro River in the north and the locality of Montalbán in the south ( Figure 1.1 View FIGURE 1 ). During the Mesozoic, the Iberian Basin underwent a major extension related to the opening of the Atlantic ( Salas et al., 2001). The Oliete Subbasin was formed during the second rifting stage that began in the Early Cretaceous, when the carbonate platform of the central sector of the Iberian Basin was fractured as a result of the process of extension, creating several subbasins ( Soria de Miguel, 1997; Salas et al., 2001).
The Lower Cretaceous of the Oliete Subbasin is characterized by four megasequences: the Margas y Calizas de Blesa Formation; the Calizas de Alacón Formation; the Margas de Forcall Formation; and the Calizas de Oliete Formation ( Soria de Miguel, 1997) ( Figure 1.2-4 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 ). The site of La Cantalera forms part of the typical “Wealden facies” of the Lower Cretaceous. More specifically, it is located within the gray clays of the lower part of the Blesa Formation ( Figure 2 View FIGURE 2 ), which has traditionally been considered upper Hauterivian / lower Barremian in age ( Soria et al., 1995; Canudo et al., 2002b; Aurell et al., 2004) due to the presence of the charophyte Atopochara trivolvis triquetra Grambast, 1968 . However, the presence of this species at the base of the Blesa Formation indicates a lower Barremian age, as in the upper part of the Castellar Formation at Galve ( Canudo et al., 2012).
In the area around Josa, the Blesa Formation displays a complex sedimentary evolution. Continental sedimentation predominates at the bottom, with alluvial, lacustrine and palustrine deposits ( Figure 2 View FIGURE 2 ), while the top shows facies of marshes and coastal lagoons. The site of La Cantalera has been interpreted as mudflat deposits associated with swampy areas with periodic droughts in an area of marshy vegetation. The significant concentration of vertebrate remains at the site of La Cantalera can perhaps be explained by the small size and isolated nature of the swampy domains, which might have attracted animals for feeding ( Ruíz-Omeñaca et al., 1997; Aurell et al., 2004).
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