Blasi 2, Arén (Cretaceous of Spain)

Also known as Blasi 2a, 2b

Where: Aragón, Spain (42.3° N, 0.7° E: paleocoordinates 34.3° N, 0.6° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• lower part; 6.5 m interval; upper part of chron c30n, 65.6-68.7 mya

•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).

•Actually the "Grey Garumnian" = La Posa Fm.

• bed-level stratigraphic resolution

Environment/lithology: lagoonal or restricted shallow subtidal; lenticular, gray marl

• "lagoonal/marsh marls"
• "grey marls", 2 m thick

Size classes: macrofossils, mesofossils

Collection methods: bulk, sieve,

• includes seven types of eggshell

Primary reference: J. I. Canudo, L. Ardévol, G. Cuenca-Bescós, N. López-Martínez, X. Murelaga, X. Pereda-Suberbiola, J. I. Ruiz-Omeñaca and X. Orue-Etxebarria. 1999. New dinosaur localities near the Cretaceous/Tertiary boundary from Arén (Huesca, Spain). In J. I. Canudo & G. Cuenca-Bescós (ed.), IV European Workshop on Vertebrate Paleontology. Programme and Abstracts. Field Guide 40-41 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 45437: authorized by Matthew Carrano, entered by Matthew Carrano on 22.10.2004, edited by Philip Mannion, Patricia Holroyd and Jonathan Tennant

Creative Commons license: CC BY (attribution)

Taxonomic list

 Charales - Feistiellaceae
Feistiella sp.5 Schudack 1986
 Charales - Characea
Amblyochara concava5
A. c. concava, A. c. mucronata, A. c. ssp.
Amblyochara "sp. A"5 Grambast 1962
Actinopteri
 Teleostei -
 Neopterygii -
 Lepisosteiformes - Lepisosteidae
Lepisosteidae indet.5 Cuvier 1825 gar
Reptilia
 Squamata -
Squamata indet.1 squamates
Scleroglossa indet.1 Estes et al. 1988 squamates
Alethinophidia indet.1 snake
posterior caudal vertebra [MPZ 2009/331]
 Squamata - Anguidae
Anguidae indet.1 Gray 1825 squamates
5 trunk vertebrae [MPZ 2009/326-330]
 Loricata -
 Loricata - Krokolithidae
Krokolithes sp.7 Hirsch 1985 crocodile eggshell
dinosauroid tubospherulithic
 Loricata -
Eusuchia indet.9 crocodilian
 Loricata - Allodaposuchidae
Arenysuchus gascabadiolorum8 Puértolas et al. 2011 crocodilian
 Loricata - Hylaeochampsidae
cf. Acynodon sp.7 Buscalioni et al. 1997 crocodilian
MPZ-2017/1137, tooth
 Saurischia -
 Ornithischia - Spheroolithidae
Spheroolithus aff. europaeus7 Sellés et al. 2014 ornithopod
 Ornithischia - Hadrosauridae
Euhadrosauria indet.5 Weishampel et al. 1993 hadrosaurid
BLA 2b/2
 Theropoda -
Theropoda "indet. 1"10 theropod
MPZ2004/5, tooth
 Theropoda - Dromaeosauridae
Dromaeosauridae "indet. E"2 Colbert and Russell 1969 maniraptoran
MPZ 98/75
? Dromaeosauridae indet.10 Colbert and Russell 1969 maniraptoran
"Dromaeosauridae type C"; MPZ 2004/6
? Richardoestesia sp.10 Currie et al. 1990 maniraptoran
MPZ 98/73, 2004/7, teeth
? Richardoestesia sp.10 Currie et al. 1990 maniraptoran
MPZ 98/72, 74, teeth
 Theropoda -
? Paronychodon sp.10 Cope 1876 maniraptoran
MPZ 98/76, 77, 78, teeth
Maniraptoriformes indet.2 Holtz and Padian 1995 coelurosaur
  - Prismatoolithidae
Prismatoolithidae indet.4 Hirsch 1994 dinosaur
 Testudines - Bothremydidae
Bothremydidae indet.6 sideneck turtle
cf. Polysternon sp.5 Portis 1882 sideneck turtle
 Testudinata - Helochelydridae
Solemys sp.3 Lapparent de Broin and Murelaga 1996 turtle
Amphibia
  -
Amphibia indet. Linnaeus 1758 tetrapod
 Salientia - Palaeobatrachidae
Palaeobatrachidae indet.1 Cope 1865 frog
3 incomplete maxillae [MPZ 2009/300-302], 14 ilia (1 left [MPZ 2009/303], 2 right [MPZ 2009/304-305] and 11 indet. [MPZ 2009/306-316]), 1 right scapula [MPZ 2009/317], 1 vertebra [MPZ 2009/318] and 4 radioulnae [MPZ 2009/319-322]
 Salientia -
aff. Paradiscoglossus sp.1 Estes and Sanchíz 1982 frog
1 mandible [MPZ 2009/229], 13 ilia (2 left [MPZ 2009/ 230-231], 7 right [MPZ 2009/232-238] and 4 indet. fragments [MPZ 2009/239-242]), 9 humeri [MPZ 2009/243-251], 1 urostyle [MPZ 2009/252], 4 vertebrae [MPZ 2009/253-256], 2 sacral vertebrae [MPZ 2009/257-258], 4 radioulnae [MPZ 2009/259-262], 1 femur [MPZ 2009/263] and 36 tibiofibulae [MPZ 2009/264-299]
 Temnospondyli - Albanerpetontidae
"Albanerpeton aff. nexuosum" = Albanerpeton nexuosus1
"Albanerpeton aff. nexuosum" = Albanerpeton nexuosus1 Estes 1981 tetrapod
3 premaxillae [MPZ 2009/179-181], 4 maxillae (2 left [MPZ 2009/182-183] and 2 right [MPZ 2009/184-185]); 25 dentaries (14 left [MPZ 2009/186-199], 9 right [MPZ 2009/200-208] and 2 indet. [MPZ 2009/207-208]), 8 indeterminate partial jaws [MPZ 2009/211-218], 1 frontal [MPZ 2009/219], 5 humeri [MPZ 2009/221-225] and 2 trunk vertebrae [MPZ 2009/226-227]: misspelled "nexuosum"