Also known as Isona i Conca Dellà, TB1
Where: Cataluña, Spain (42.2° N, 1.0° W: paleocoordinates 34.3° N, 1.0° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Conques Formation (Tremp Group), Early/Lower Maastrichtian (70.6 - 66.0 Ma)
• Uppermost lower red unit of the Tremp Formation, only 35m beneath the Vallcebre Limestones and laterally equivalent strata unit
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•The Conques Formation is equivalent to the "lower Red Garumen" facies. The Conques Formation was previously assigned a late maastrichtian age (Sellés and Villa 2015; Villa et al. 2015) Biostratigraphy and Sr stable isotope geochemistry suggest that the La Posa and Conques Formation are entirely early Maastrichtian, lying within chron C31r (see Caus et al. 2016; Oms et al. 2016; Fondevilla et al. 2016; Fondevilla et al. 2019).
• bed-level stratigraphic resolution
Environment/lithology: fluvial; fine-grained, brown sandstone
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•It is interbedded with reddish siltstones, medium- and coarse-grained sandstones and microconglomerates.
Size class: macrofossils
Preservation: trace
Collected in 2008-2009
Primary reference: J. Marmi, A. H. Luján, V. Riera, R. Gaete, and O. Oms Galobart. 2012. The youngest species of Polysternon: A new bothremydid turtle from the uppermost Maastrichtian of the southern Pyrenees. Cretaceous Research 35:133-142 [P. Mannion/P. Mannion]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 132488: authorized by Philip Mannion, entered by Philip Mannion on 20.08.2012, edited by Matthew Carrano
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Reptilia | |
Polysternon isonae n. sp.
Polysternon isonae n. sp. Marmi et al. 2012 sideneck turtle MCD-5094 - type (anterior half of a plastron, nuchal, left peripheral 1, left peripheral 3 and a fragment of carapace with partial left costal 1 and neurals 1 and 2); MCD-5095 - paratype (incomplete articulated shell); isolated plates; MNI = 3
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