Els Nerets (Vilamitjana-1) (Cretaceous of Spain)

Also known as Tremp, V-1

Where: Cataluña, Spain (42.2° N, 0.9° E: paleocoordinates 34.2° N, 0.7° E)

• coordinate based on political unit

• outcrop-level geographic resolution

When: La Posa Formation (Tremp Group), Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• uppermost part of Aren 2 sequence; "garumniense gris"

• group of beds-level stratigraphic resolution

Environment/lithology: marine; argillaceous limestone and red, calcareous sandstone

• invertebrates present "probably indicate transitional, temperate, warm-water environments".
• the Tremp formation includes many different lithologies, including limestones, marls, clays, silts, sandstones and conglomerates. The crocodilian material comes from a level of calcareous sandstones, where bones usually appear with a calcareous crust.

Size classes: macrofossils, mesofossils

Collected by Casanovas-Cladellas et al. in 1984–2003

Collection methods: mechanical,

Primary reference: M. L. Casanovas-Cladellas, J. V. Santafé-Llopis, J. L. Sanz and A. D. Buscalioni. 1985. Orthomerus (Hadrosauridae, Ornithopoda) del Cretácico Superior del yacimento de "Els Nerets" (Tremp, España) [Orthomerus (Hadrosauridae, Ornithopoda) from the Upper Cretaceous locality of "Els Nerets" (Tremp, Spain)]. Paleontologia i Evolucio 19:155-162 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 36381: authorized by John Alroy, entered by Robin Whatley on 27.01.2004, edited by Erin Leckey and Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

• "Casanovas et al. (1985) provisionally referred two femora and a few caudal vertebrae from Vilamitjana, near Tremp, to Orthomerus sp. The femora differ from those of 'Orthomerus dolloi' from southern Limburg and those of Telmatosaurus transsylvanicus from Romania." (Casanovas-Cladellas et al. 1998)
Malacostraca
 Decapoda -
Decapoda indet.2 Latreille 1802 decapod
Bivalvia
 Ostreida - Ostreidae
Gastropoda
 Cerithiacea - Thiaridae
 Neritoidea - Neritidae
Neritina sp.2 Lamarck 1816 snail
Reptilia
 Dinosauria -
Dinosauria indet.6 Owen 1842 dinosaur
 Saurischia -
Titanosauria indet.8 Bonaparte and Coria 1993 sauropod
IPSN-10, 20, 22, 23; R humerus, R femur
 Saurischia - Titanosauridae
Megaloolithus mamillare7 Vianey-Liaud et al. 1994 titanosaurid
cf. Hypselosaurus sp.5 Matheron 1869 titanosaurid
IPSN-19
 Saurischia - Megalosauridae
"? Megalosauridae indet." = Megalosauridae5
"? Megalosauridae indet." = Megalosauridae5 Fitzinger 1843 tetanuran
IPSN-18
 Ornithischia - Nodosauridae
Nodosauridae indet.4 Marsh 1890 ornithischian
dermal plates
 Neornithischia - Iguanodontidae
Iguanodontidae indet.3 Bonaparte 1850 iguanodontid
IPSN-9, 17, 24; vertebral centrum
 Neornithischia - Hadrosauridae
cf. Orthomerus sp.5 Seeley 1883 hadrosaurid
 Loricata - Allodaposuchidae
Allodaposuchus precedens1 Nopcsa 1928 crocodilian
MNI