Plottier Formation

{{Short description|Geologic formation in Argentina}}

{{Infobox rockunit

| name = Plottier Formation

| image =

| caption =

| type = Geological formation

| period = Coniacian

| age = late Coniacian-early Santonian
~{{fossil range|86|85}}

| prilithology = Claystone

| otherlithology = Sandstone

| namedfor = Plottier

| namedby = Fossa Mancini et al.

| year_ts = 1938

| region = Mendoza, Neuquén & Río Negro Provinces

| country = Argentina

| coordinates = {{coord|37.4|S|69.1|W|display=inline,title}}

| paleocoordinates = {{coord|42.2|S|49.4|W|display=inline}}

| unitof = Neuquén Group
 Río Neuquén Subgroup

| subunits =

| underlies = Río Colorado Subgroup
 Bajo de la Carpa Formation

| overlies = Sierra Barrosa Formation

| thickness = Up to {{convert|25|m|ft|abbr=on}}

| extent = Neuquén Basin

| area =

| map = {{Location map+ | Argentina

| relief = 1

| width = 250

| float = center

| places =

{{Location map~ | Argentina

| lat_deg = -37.4

| lon_deg = -69.1

| mark = Lightgreen pog.svg

| marksize = 12

}}

}}

| map_caption =

}}

The Plottier Formation is a geologic formation that outcrops in the Argentine Patagonian provinces of Río Negro and Neuquén. It is the younger of two formations belonging to the Río Neuquén Subgroup within the Neuquén Group of the Neuquén Basin, with the oldest rocks dating from the late Coniacian and its youngest maybe from the very start of the Santonian. Formerly, that subgroup was treated as a formation, and the Plottier Formation was known as the Plottier Member.Sánchez et al., 2006

Description

A section near the Neuquén City airport, north of the town of Plottier, is the type locality of the Plottier Formation.Fossa Mancini et al., 1938 At its base, this formation grades into the Portezuelo Formation, and it is in turn overlain conformably by the Bajo de la Carpa Formation, a unit of the Río Colorado Subgroup.

The Plottier Formation is the thinnest formation within the Neuquén Group, with a maximum thickness of only {{convert|25|m|ft}}. It is differentiated from the underlying Portezuelo Formation primarily by its higher content of argillites (mud deposits) and was deposited under fluvial conditions. In 2006, a detailed lithostratigraphic and paleoecological study of a section of the Plottier Formation was published. This section contained alluvial deposits laid down by what was essentially a low-gradient wandering river throughout the millions of years, but often was of a single-channel type with little meandering.Leanza et al., 2004

Fossil content

{{Paleobiota-key-compact}}

Few animal fossils are known from this formation, including:[https://paleobiodb.org/classic/displayCollResults?geological_group=Neuqu%E9n&formation=Plottier Plottier Formation] at Fossilworks.org

=Crocodyliformes=

class="wikitable" align="center"
colspan="6" align="center" | Crocodyliformes reported from the Plottier Formation
GenusSpeciesPresence

!Material

NotesImages
Crocodyliformes indet.{{Cite journal |last1=Salgado |first1=Leonardo |last2=Canudo |first2=José I. |last3=Garrido |first3=Alberto C. |last4=Ruiz-Omeñaca |first4=José I. |last5=García |first5=Rodolfo A. |last6=de la Fuente |first6=Marcelo S. |last7=Barco |first7=José L. |last8=Bollati |first8=Raúl |date=2009-06-01 |title=Upper Cretaceous vertebrates from El Anfiteatro area, Río Negro, Patagonia, Argentina |url=https://linkinghub.elsevier.com/retrieve/pii/S0195667109000032 |journal=Cretaceous Research |volume=30 |issue=3 |pages=767–784 |doi=10.1016/j.cretres.2009.01.001 |bibcode=2009CrRes..30..767S |issn=0195-6671|url-access=subscription }}

|Indeterminate

|El Anfiteatro

|

  • Seven osteoderms (MPCA-AT 251–257)
  • Right dentary fragment (MPCA-AT 75)

|Resembles peirosaurids such as Peirosaurus and Uberabasuchus

|

Lomasuchus{{Cite journal |last1=Gasparini |first1=Zulma |last2=Chiappe |first2=Luis M. |last3=Fernandez |first3=Marta |date=1991-09-30 |title=A new Senonian peirosaurid (Crocodylomorpha) from Argentina and a synopsis of the South American Cretaceous crocodilians |url=https://www.researchgate.net/publication/254313755 |journal=Journal of Vertebrate Paleontology |language=en |volume=11 |issue=3 |pages=316–333 |doi=10.1080/02724634.1991.10011401 |bibcode=1991JVPal..11..316G |issn=0272-4634}}{{cite journal |author1=Diego Pol |author2=Zulma Brandoni de Gasparini |author-link2=Zulma Brandoni de Gasparini |name-list-style=amp |year=2007 |title=Crocodyliformes |url=https://books.google.com/books?id=5YFOAQAAIAAJ |journal=In: Patagonian Mesozoic Reptiles. Gasparini, Z., Coria, R., & Salgado, L. (Eds.). Indiana University Press |pages=116–142|isbn=978-0-253-34857-9 }}

|L. palpebrosus

|Embalse Cerros Colorados

|Skull and partial mandibular ramus

|A peirosaurid, specimen originally claimed to originate from the Rio Colorado formation.

|

Mesoeucrocodylia indet.{{Cite journal |last=Arcucci |first=Andrea |date=2011-01-01 |title=Un nuevo Mesoeucrocodylia cretácico del norte de la Cuenca Neuquina, Argentina |url=https://www.academia.edu/83702584 |journal=Revista Brasileira de Paleontologia |volume=14 |issue=1 |pages=51–60|doi=10.4072/rbp.2011.1.05 }}

|Indeterminate

|Yacimiento Narambuena

|Partial skeleton (MAU-PV-N-280)

|Subadult specimen showing both derived and primitive traits

|

Peirosauridae indet.{{Cite journal |last1=Filippi |first1=Leonardo Sebastián |last2=Cerda |first2=Ignacio Alejandro |last3=Garrido |first3=Alberto Carlos |date=February 2013 |title=Morfología e Histología de Osteodermos de Un Peirosauridae De La Cuenca Neuquina |url=https://www.researchgate.net/publication/259569701 |journal=Ameghiniana |language=en |volume=50 |issue=1 |pages=3–13 |doi=10.5710/AMGH.8.6.2012.430 |issn=0002-7014|hdl=11336/79259 |hdl-access=free }}

|Indeterminate

|Puesto Hernández

|Partial skeleton (MAU-Pv-PH-437)

|A peirosaurid

|

=Dinosaurs=

==Ornithischians==

A footprint track of an ornithopod is known from the Middle Loma de la Lata site.{{Cite journal |last1=Calvo |first1=Jorge O. |last2=Rivera |first2=Cynthia |last3=Avila |first3=Laura |date=2021-10-01 |title=An overview of Upper Cretaceous dinosaur tracks and other trace fossils from the Barreales lake area, Neuquén Province, Patagonia, Argentina |url=https://linkinghub.elsevier.com/retrieve/pii/S0895981121002224 |journal=Journal of South American Earth Sciences |volume=110 |pages=103375 |doi=10.1016/j.jsames.2021.103375 |bibcode=2021JSAES.11003375C |issn=0895-9811|url-access=subscription }}

class="wikitable" align="center"
colspan="6" align="center" | Ornithischians reported from the Plottier Formation
GenusSpeciesPresence

!Material

NotesImages
rowspan="2" |Ornithopoda indet.{{Cite journal |last1=Cruzado-Caballero |first1=Penélope |last2=Filippi |first2=Leonardo S. |last3=Méndez |first3=Ariel H. |last4=Garrido |first4=Alberto C. |last5=Juárez Valieri |first5=Rubén D. |date=2016-04-01 |title=New record of ornithopod dinosaur from the Plottier Formation (Upper Cretaceous), Patagonia, Argentina |url=https://linkinghub.elsevier.com/retrieve/pii/S0753396916300064 |journal=Annales de Paléontologie |volume=102 |issue=2 |pages=145–150 |doi=10.1016/j.annpal.2016.02.003 |bibcode=2016AnPal.102..145C |issn=0753-3969|hdl=11336/62352 |hdl-access=free }}

|Indeterminate

|El Anfiteatro

|A pedal ungual phalanx (MPCA-AT 261)

|An ornithopod roughly the size of Notohypsilophodon

|

Indeterminate

|Puesto Hernández quarry

|Partial dorsal neural arch (MAU-Pv-PH-458)

|An ornithopod similar to Macrogryphosaurus, estimated to be 6 meters long

|File:Macrogryphosaurus life reconstruction.png

==Sauropods==

12 footprint tracks of a sauropod are known from the site of Proyecto Dino.

class="wikitable" align="center"
colspan="6" align="center" | Sauropods reported from the Plottier Formation
GenusSpeciesPresence

!Material

NotesImages
Aeolosaurini indet.{{Cite journal |last=Martinelli |first=Agustin |date=2013-01-01 |title=Registro de un dinosaurio Aeolosaurini (Sauropoda, Titanosauria) en el Cretácico Superior (Formación Anacleto) del norte de la provincia de Neuquén, Argentina, y comentarios sobre aeolosaurinos sudamericanos |url=https://www.academia.edu/4937919 |journal=Revista Brasileira de Paleontologia 16(1): 147-156}}

|Indeterminate

|Yacimiento Narambuena

|Four articulated caudal vertebrae (MAU-Pv-N-414)

|A titanosaur

|

Antarctosaurus{{Cite journal |last1=Otero |first1=Alejandro |last2=Reguero |first2=Marcelo |date=2023-03-06 |title=Dinosaurs (Reptilia, Archosauria) at Museo de La Plata, Argentina: annotated catalogue of the type material and Antarctic specimens |url=https://palaeo-electronica.org/content/2013-technical/410-museo-de-la-plata-catalogue |journal=Palaeontologia Electronica |volume=16 |issue=1 |pages=1–24 |doi=10.26879/352 |issn=1094-8074|hdl=11336/13790 |hdl-access=free }}

|A. giganteus

|Aguada del Caño

|Partial skeleton (MLP 26-316)

|A titanosaur

|

Muyelensaurus{{Cite journal |last=Porfiri |first=Juan |date=2000-01-01 |title=A New Titanosaur Sauropod from the Late Cretaceous of Neuquén, Patagonia, Argentina |url=https://www.academia.edu/59692568 |journal=Arquivos do Museu Nacional, Rio de Janeiro |volume=65 |issue=4 |pages=485–504}}{{Cite journal |last1=Bellardini |first1=Flavio |last2=Baiano |first2=Mattia A. |last3=Barrios |first3=Francisco |last4=Holgado |first4=Borja |last5=Coria |first5=Rodolfo A. |date=January 2018 |title=New Titanosauria (Dinosauria, Sauropoda) remains from the Upper Cretaceous (Plottier Fm) of the southern Neuquén Basin (Patagonia, Argentina) |url=https://www.researchgate.net/publication/322804790 |journal=Journal of Iberian Geology |language=en |volume=44 |issue=1 |pages=75–84 |doi=10.1007/s41513-018-0047-5 |bibcode=2018JIbG...44...75B |issn=1698-6180|hdl=11336/83306 |hdl-access=free }}

|M. pecheni

|Loma del Lindero

|Partial skeleton & additional vertebrae

|A titanosaur, specimens originally thought to be from the Portezuelo Formation

|

Notocolossus{{Cite journal |last1=González Riga |first1=Bernardo J. |last2=Lamanna |first2=Matthew C. |last3=Ortiz David |first3=Leonardo D. |last4=Calvo |first4=Jorge O. |last5=Coria |first5=Juan P. |date=2016-01-18 |title=A gigantic new dinosaur from Argentina and the evolution of the sauropod hind foot |journal=Scientific Reports |language=en |volume=6 |issue=1 |page=19165 |doi=10.1038/srep19165 |issn=2045-2322 |pmc=4725985 |pmid=26777391|bibcode=2016NatSR...619165G }}{{Cite journal |last=Previtera |first=Elena |date=2019-05-31 |title=Taphonomic analysis of saurischian dinosaurs from the Plottier Formation (Upper Cretaceous), Mendoza, Argentina |url=https://www.researchgate.net/publication/333657838 |journal=Andean Geology |volume=46 |issue=2 |pages=345 |doi=10.5027/andgeoV46n2-3161 |issn=0718-7106|hdl=11336/120760 |hdl-access=free }}

|N. gonzalezparejasi

|Cerro Guillermo

|Two partial skeletons (UNCUYO-LD 301 & UNCUYO-LD 302)

|A titanosaur

|File:Notocolossus NT small.jpg

Petrobrasaurus{{Cite journal |last1=Filippi |first1=L. S. |last2=Canudo |first2=J. I. |last3=Salgado |first3=J. L. |last4=Garrido |first4=A. |last5=García |first5=R. |last6=Cerda |first6=I. A. |last7=Otero |first7=A. |date=2011-05-06 |title=A new sauropod titanosaur from the Plottier Formation (Upper Cretaceous) of Patagonia (Argentina) |url=https://www.researchgate.net/publication/235586462 |journal=Geologica Acta |language=ca |volume=9 |issue=1 |pages=1–12 |doi=10.1344/105.000001648 |doi-broken-date=2024-11-03 |issn=1696-5728}}

|P. puestohernandezi

|Rincón de los Sauces

|Partial skeleton

|A titanosaur

|Image:Petrobrasaurus puestohernandezi.jpg

rowspan="2" |Sauropoda indet.

|Indeterminate

|5 kilometers north of Plottier

|Partial right tibia (MCF-PVPH-899)

|A sauropod

|

Indeterminate

|Cerro Guillermo

|Incomplete skeleton (IANIGLA-PV.113)

|A sauropod

|

rowspan="2" |Titanosauria indet.

|Indeterminate

|El Anfiteatro

|Incomplete dorsal vertebra (MPCA-AT 024)

|A large titanosaur

|

Indeterminate

|5 kilometers north of Plottier

|

  • Left femur and partial ribs (MCF-PVPH-889)
  • Right fibula (MCF-PVPH-900)

|Remains of titanosaurs

|

==Theropods==

class="wikitable" align="center"
colspan="6" align="center" | Theropods reported from the Plottier Formation
GenusSpeciesPresence

!Material

NotesImages
rowspan="2" |Abelisauridae indet.{{Cite journal |last1=Hendrickx |first1=Christophe |last2=Tschopp |first2=Emanuel |last3=Ezcurra |first3=Martín d. |date=2020-04-01 |title=Taxonomic identification of isolated theropod teeth: The case of the shed tooth crown associated with Aerosteon (Theropoda: Megaraptora) and the dentition of Abelisauridae |url=https://linkinghub.elsevier.com/retrieve/pii/S0195667118303860 |journal=Cretaceous Research |volume=108 |pages=104312 |doi=10.1016/j.cretres.2019.104312 |bibcode=2020CrRes.10804312H |issn=0195-6671|url-access=subscription }}{{Cite journal |last1=Meso |first1=J. G. |last2=Juárez Valieri |first2=R. D. |last3=Porfiri |first3=J. D. |last4=Correa |first4=S. A. S. |last5=Martinelli |first5=A. G. |last6=Casal |first6=G. A. |last7=Canudo |first7=J. I. |last8=Poblete |first8=F. |last9=Dos Santos |first9=D. |date=2021-09-01 |title=Testing the persistence of Carcharodontosauridae (Theropoda) in the Upper Cretaceous of Patagonia based on dental evidence |url=https://linkinghub.elsevier.com/retrieve/pii/S0195667121001221 |journal=Cretaceous Research |volume=125 |pages=104875 |doi=10.1016/j.cretres.2021.104875 |bibcode=2021CrRes.12504875M |hdl=11336/183886 |issn=0195-6671|hdl-access=free }}

|Indeterminate

|Cañadon Amarillo

|Tooth

|An abelisaur tooth formerly thought to be part of the holotype specimen of Aerosteon

|

Indeterminate

|El Anfiteatro

|Tooth (Endemas-PV 16)

|An abelisaur, tooth originally reported as that of a carcharodontosaurid in 2009 but reclassified in 2021

|

Alvarezsauria indet.{{Cite journal |last1=Gianechini |first1=F. A. |last2=Meso |first2=J. G. |last3=Méndez |first3=A. H. |last4=Garrido |first4=A. C. |last5=Filippi |first5=L. S. |date=2024-10-16 |title=A new maniraptoran femur with alvarezsaurian affinities from the Plottier Formation (Coniacian-Santonian), northern Patagonia |url=https://www.tandfonline.com/doi/full/10.1080/08912963.2024.2414206 |journal=Historical Biology |language=en |pages=1–11 |doi=10.1080/08912963.2024.2414206 |issn=0891-2963|url-access=subscription }}

|Indeterminate

|Rincón de los Sauces

|Right femur (MAU-Pv-PH-453)

|An alvarezsaur

|

Brachyrostra indet.{{Cite journal |last1=Méndez |first1=Ariel H. |last2=Gianechini |first2=Federico A. |last3=Paulina-Carabajal |first3=Ariana |last4=Filippi |first4=Leonardo S. |last5=Juárez-Valieri |first5=Rubén D. |last6=Cerda |first6=Ignacio A. |last7=Garrido |first7=Alberto C. |date=2022-01-01 |title=New furileusaurian remains from La Invernada (northern Patagonia, Argentina): A site of unusual abelisaurids abundance |url=https://linkinghub.elsevier.com/retrieve/pii/S0195667121002378 |journal=Cretaceous Research |volume=129 |pages=104989 |doi=10.1016/j.cretres.2021.104989 |bibcode=2022CrRes.12904989M |issn=0195-6671|url-access=subscription }}

|Indeterminate

|Loma del Lindero

|Vertebrae, teeth and possible sacrum (MAU-Pv-LL-75)

|An abelisaur

|

style="background:#fbdddb;" |cf. Carcharodontosauridae

|style="background:#fbdddb;" |Indeterminate

|style="background:#fbdddb;" |El Anfiteatro

|style="background:#fbdddb;" |Tooth (Endemas-PV 16)

|style="background:#fbdddb;" |Reclassified as an abelisaur tooth in 2021

|style="background:#fbdddb;" |

Coelurosauria indet.

|Indeterminate

|El Anfiteatro

|Two teeth (MPCA-AT 263 & 269)

|A coelurosaur

|

Maniraptoriformes indet. cf. Unenlagiinae

|Indeterminate

|El Anfiteatro

|Tooth (Endemas-PV 15)

|Possible unenlagiine tooth, though more material is needed to confirm this

|

Theropoda indet.

|Indeterminate

|El Anfiteatro

|Incomplete caudal vertebra (MPCA-AT 082)

|A "moderately sized" theropod

|

=Pterosaurs=

class="wikitable" align="center"
colspan="6" align="center" | Pterosaurs reported from the Plottier Formation
GenusSpeciesPresence

!Material

NotesImages
Thanatosdrakon{{Cite journal |last1=Ortiz David |first1=Leonardo D. |last2=González Riga |first2=Bernardo J. |last3=Kellner |first3=Alexander W. A. |date=2022-09-01 |title=Thanatosdrakon amaru, gen. et sp. nov., a giant azhdarchid pterosaur from the Upper Cretaceous of Argentina |url=https://linkinghub.elsevier.com/retrieve/pii/S0195667122000921 |journal=Cretaceous Research |volume=137 |pages=105228 |doi=10.1016/j.cretres.2022.105228 |bibcode=2022CrRes.13705228O |issn=0195-6671|url-access=subscription }}

|T. amaru

|Agua del Padrillo

|

  • Partial skeleton (UNCUYO-LD 307)
  • Left humerus (UNCUYO-LD 350)

|An azhdarchid

|File:Thanatosdrakon.png

=Turtles=

class="wikitable" align="center"
colspan="6" align="center" | Turtles reported from the Plottier Formation
GenusSpeciesPresence

!Material

NotesImages
Chelidae? indet.

|Indeterminate

|El Anfiteatro

|Plastron plate (MPCA-AT 089)

|A chelid

|

Linderochelys{{Cite journal |last1=Jannello |first1=J. M. |last2=Maniel |first2=I. J. |last3=Previtera |first3=E. |last4=de la Fuente |first4=M. S. |date=2018-03-01 |title=Linderochelys rinconensis (Testudines: Pan-Chelidae) from the Upper Cretaceous of northern Patagonia: New insights from shell bone histology, morphology and diagenetic implications |url=https://linkinghub.elsevier.com/retrieve/pii/S0195667117300848 |journal=Cretaceous Research |series=New Insights on the Vertebrate Paleontology of the Neuquén Group, Patagonia, Argentina |volume=83 |pages=47–61 |doi=10.1016/j.cretres.2017.05.011 |bibcode=2018CrRes..83...47J |hdl=11336/59673 |issn=0195-6671|hdl-access=free }}

|L. rinconensis

|Loma de Lindero

|Partial skeleton (MAU-PV-LL-69)

|A chelid, locality originally assigned to the Rio Neuquén Subgroup with no specific formation.

|

Rionegrochelys{{Cite journal |last1=de la Fuente |first1=Marcelo |last2=Maniel |first2=Ignacio |last3=Jannello |first3=Juan |last4=Sterli |first4=Juliana |last5=Garrido |first5=Alberto |last6=García |first6=Rodolfo |last7=Salgado |first7=Leonardo |last8=Canudo |first8=Jose |last9=Bolatti |first9=Raúl |date=2017 |title=Unusual shell anatomy and osteohistology in a new Late Cretaceous panchelid turtle from northwestern Patagonia, Argentina |url=https://www.researchgate.net/publication/318244888 |journal=Acta Palaeontologica Polonica |volume=62 |doi=10.4202/app.00340.2017 |s2cid=44121053|hdl=11336/40932 |hdl-access=free }}

|R. caldieroi

|El Anfiteatro

|Shell elements

|A chelid, type specimen first reported as an indeterminate chelid in 2009

|File:Rionegrochelys caldieroi.jpg

=Invertebrates=

There are also ichnofossils left on the river's mudflats, as well as fossil freshwater bivalves.

==Ostracods==

class="wikitable" align="center"
colspan="6" align="center" | Ostracods reported from the Plottier Formation
GenusSpeciesPresence

!Material

NotesImages
Cypridoidea indet.{{Cite book |last1=Díaz Martínez |first1=Enrique |title=4th european meeting on the palaeontology and stratigraphy of Latin America |last2=Rábano |first2=Isabel |date=2007 |publisher=Instituto geológico y minero de España |others=European meeting on the palaeontology and stratigraphy of Latin America |isbn=978-84-7840-707-1 |series=Cuadernos del Museo Geominero |location=Madrid |pages=273–278 |chapter=Late Cretaceous non marine microfossils of the Plottier Formation (Cretaceous) at Zampal, Argentina |chapter-url=https://www.researchgate.net/publication/267692115}}

|Indeterminate

|Zampal

|A few specimens

|A cypridoid

|

rowspan="3" |Ilyocypris

|I. aff. bauruensis

|Zampal

|A few molts

|An ilyocypridid

|

I. cf. riograndensis

|Zampal

|

|An ilyocypridid

|

I. wichmanni

|Zampal

|

|An ilyocypridid

|

rowspan="2" |Neocyprideis{{Cite journal |last1=Kihn |first1=R. G. |last2=Calvo |first2=J. O. |date=2001-01-01 |title=Ostracods and paleoambiental inferences in the Plottier Formation (Coniancian - Upper Cretaceous) of the Barreales Lake, Neuquén |url=https://www.researchgate.net/publication/358003987 |journal=Munis Entomology & Zoology |language=en |volume=17 |issue=1 |pages=434–442 |issn=1306-3022}}

|N.? sp.

|Zampal

|

|An ilyocypridid

|

N. zampalensis

|Babilonia

|4 valves

|An ilyocypridid

|

rowspan="4" |Neuquenocypris

|N. calfucurensis

|Babilonia

|3 valve fragments

|An ilyocypridid

|

N. cf. minor

|Zampal

|

|An ilyocypridid

|

N. nahuelniyuensis

|Babilonia

|6 valves

|An ilyocypridid

|

N. tenuipunctata

|Babilonia

|5 adult and 3 juvenile valves

|An ilyocypridid

|

Paralimnocythere

|P.? sp.

|Zampal

|Several carapaces and valves

|A limnocytherid

|

Talicyprideinae sp.

|Indeterminate

|Zampal

|Very scarce number of carapaces

|An ilyocypridid

|

Vecticypris

|V. sp.

|Babilonia

|2 valves

|A limnocytherid

|

Wolburgiopsis

|W. cf. neocretacea

|Zampal

|

|A limnocytherid

|

=Plants=

class="wikitable" align="center"
colspan="6" align="center" | Plants reported from the Plottier Formation
GenusSpeciesPresence

!Material

NotesImages
Angiospermae? indet.

|Indeterminate

|Zampal

|A few seeds

|A possible angiosperm

|

Henrisporites

|H. sp.

|Zampal

|Abundant megaspores

|A lycopod

|

Lychnothamnus

|L. barbosai

|Zampal

|Over 400 microfossils

|A stonewort

|

Nitella

|N. sp.

|Zampal

|21 microfossils

|A stonewort

|

rowspan="2" |Spermatites

|S. sp. 1

|Zampal

|Seeds

|An angiosperm

|

S. sp. 2

|Zampal

|Seeds

|An angiosperm

|

See also

References

{{Reflist|20em}}

= Bibliography =

  • {{aut|Chiappe, Luis M.}} (1993): Enantiornithine (Aves) Tarsometatarsi from the Cretaceous Lecho Formation of Northwestern Argentina. American Museum Novitates 3083: 1-27. [English with Spanish abstract] [http://digitallibrary.amnh.org/dspace/bitstream/2246/4981/1/N3083.pdf PDF fulltext]
  • {{aut|Coria, Rodolfo A.; Currie, Philip J.; Eberth, David & Garrido, Alberto}} (2002): Bird footprints from the Anacleto Formation (Late Cretaceous), Neuquén, Argentina. Ameghiniana 39(4): 453-463. [English with Spanish abstract] [https://web.archive.org/web/20061124234955/http://www.biology.ualberta.ca/faculty/philip_currie/uploads/pdfs/2002/2002Bird_Footprints.PDF PDF fulltext]
  • {{Cite journal |last1=Fossa Mancini |first1=E. |author2-link=Egidio Feruglio |last2=Feruglio |first2=E. |last3=Yussen de Campana |first3=J.C. |year=1938 |title=Una reunión de geólogos de YPF y el problema de la terminología estratigráfica |language=es |trans-title=A YPF geologists' reunion and the problem of stratigraphy terminology |journal=Boletín de Informaciones Petroleras |volume=15 |pages=1–67}}
  • {{Cite journal |last1=Leanza |first1=H.A. |last2=Apesteguia |first2=S. |author3-link=Fernando Novas |last3=Novas |first3=F.E. |last4=De la Fuente |first4=M.S. |year=2004 |title=Cretaceous terrestrial beds from the Neuquén Basin (Argentina) and their tetrapod assemblages |url=https://www.researchgate.net/publication/257047651 |journal=Cretaceous Research |volume=25 |issue=1 |pages=61–87 |doi=10.1016/j.cretres.2003.10.005 |bibcode=2004CrRes..25...61L |accessdate=2019-02-16}}
  • {{aut|Lockley, Martin; Matsukawa, Masaki; Ohira, Hiroto; Li, Jianjun; Wright, Joanna; White, Diane & Chen, Peiji}} (2006): Bird tracks from Liaoning Province, China: New insights into avian evolution during the Jurassic-Cretaceous transition. Cretaceous Research 27(1): 33-43. {{doi|10.1016/j.cretres.2005.10.007}} (HTML abstract). Erratum: {{doi|10.1016/j.cretres.2008.06.002}}
  • {{aut|Salgado, L.; Coria, R.A. & Chiappe, Luis M.}} (2005): Osteology of the sauropod embryos from the Upper Cretaceous of Patagonia. Acta Palaeontologica Polonica 50(1): 79–92. [http://www.app.pan.pl/archive/published/app50/app50-079.pdf PDF fulltext]
  • {{Cite journal |last1=Sánchez |first1=María Lidia |last2=Heredia |first2=Susana |last3=Calvo |first3=Jorge O. |year=2006 |title=Paleoambientes sedimentarios del Cretácico Superior de la Formación Plottier (Grupo Neuquén), Departamento Confluencia, Neuquén |language=es |trans-title=Sedimentary paleoenvironments in the Upper Cretaceous Plottier Formation (Neuquen Group), Confluencia, Neuquén |url=https://www.researchgate.net/publication/262615949 |journal=Revista de la Asociación Geológica Argentina |volume=61 |pages=3–18 |accessdate=2019-02-16}}

Category:Geologic formations of Argentina

Category:Neuquén Group

Category:Upper Cretaceous Series of South America

Category:Cretaceous Argentina

Category:Coniacian Stage

Category:Shale formations

Category:Sandstone formations

Category:Alluvial deposits

Category:Fluvial deposits

Category:Fossiliferous stratigraphic units of South America

Category:Paleontology in Argentina

Category:Geology of Neuquén Province

Category:Geology of Río Negro Province