Also known as LCA
Where: La Rioja, Spain (42.1° N, 2.1° W: paleocoordinates 31.6° N, 9.1° E)
• coordinate stated in text
• outcrop-level geographic resolution
When: Enciso Group, Aptian (125.0 - 113.0 Ma)
• 8 track-bearing layers (A1-A8)
• group of beds-level stratigraphic resolution
Environment/lithology: lacustrine delta plain; bioturbated, ferruginous claystone and fine-grained, quartzose sandstone
•A1–A2: theropod tracks; "fine quartzarenites with clear evidence of surf action"
•A3: pterosaur and theropod tracks; "a dark claystone with symmetrical ripples, cross-bedded lamination, horizontal lamination, Fe crusts, a few fossil fragments, and bioturbation."
•A4: possible dinosaur tracks; "a sandy siltstone with abundant carbonate cement, dessication cracks, ostracods, and bioturbation."
•A5: theropod tracks; "quartzose fine-grained sandstone (locally graywacke), 20 cm thickness...symmetrical ripple-marks with straight crests"
•A6: theropod tracks; "a fine-grained graywacke, 20 cm thickness, with ferruginous crusts, bioturbation, and a few ostracods."
•A7: hundreds of tracks; "a very fine-grained graywacke (locally a sandy siltstone), with horizontal lamination, cross-bedded lamination, dessication cracks, iron crusts, and intense bioturbation...many symmetrical ripple-marks with straight crests"
•A8: theropod tracks; "a dark siltstone with horizontal lamination, cross-bedded lamination, siltstone nodules, dessication cracks, Fe crusts, bioturbation, and symmetrical ripple-marks with straight crests"
Size class: macrofossils
Preservation: mold/impression, trace
Collected in 1985
Collection methods: surface (in situ),
Primary reference: J. J. Moratalla, J. L. Sanz, and S. Jiménez. 1988. Nueva evidencia icnologica de dinosaurios en el Cretácico Inferior de La Rioja (España) [New ichnological evidence of dinosaurs in the Lower Cretaceous of La Rioja (Spain)]. Estudios Geológicos 44:119-131 [M. Carrano/M. Carrano]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 68448: authorized by Matthew Carrano, entered by Matthew Carrano on 22.01.2007, edited by Jonathan Tennant
Creative Commons license: CC BY (attribution)
Taxonomic list
| Reptilia | |
|
| |
|
| |
|
| |
|
| |