PBDB Collection

Bajo de Santa Rosa locality (MACN): Late/Upper Campanian - Early/Lower Maastrichtian, Argentina
collected 1990–1994

List of taxa

Where & when

Geology

Taphonomy & methods

Metadata & references

Taxonomic list

Dipnoi - Ceratodontidae

	Ceratodontidae indet. Gill 1872	Martinelli and Forasiepi 2004	3 elements
	MACN-PV RN 1079, left tooth plate; MACN-PV RN 1080, two tooth plates
	= Atlantoceratodus patagonicus Agnolín 2010	Agnolín 2010
Reptilia - Madtsoiidae

	Madtsoiidae indet. (Hoffstetter 1961)	Martinelli and Forasiepi 2004	3 specimens
	MACN-PV RN 1051-52, MACN-PV RN 1054: isolated trunk vertebrae

	Patagoniophis parvus Albino 1986	Martinelli and Forasiepi 2004	2 specimens
	MACN-PV RN 1049 and MACN-PV RN 1056: incomplete trunk vertebrae

	Alamitophis argentinus Albino 1986	Martinelli and Forasiepi 2004	1 specimen
	MACN-PV RN 1053: incomplete trunk vertebra.
Reptilia - Aniliidae

	? Madtsoiidae indet. (Hoffstetter 1961)	Martinelli and Forasiepi 2004	9 specimens
	MACN-PV RN 1059: almost complete trunk vertebra
	= Australophis anilioides Gómez et al. 2008	Gómez et al. 2008
	MML-PV182-190
Reptilia - Testudines - Chelidae

	Chelidae informal indet. 1 Gray 1825	Martinelli and Forasiepi 2004	1 specimen
	MACN-PV RN 1089: isolated fragments of posterior peripheral caparace

	Chelidae informal indet. 2 Gray 1825	Martinelli and Forasiepi 2004	1 specimen
	MACN-PV RN 1090: isolated fragments of shell

	Chelidae informal indet. 3 Gray 1825	Martinelli and Forasiepi 2004	1 specimen
	MACN-PV RN 1091: isolated fragments of shell
Reptilia - Plesiosauria

	Plesiosauria indet. de Blainville 1835	O'Gorman et al. 2011	1 element
	MACN-PV RN 1087d (cervical centra)
Reptilia - Plesiosauria - Polycotylidae

	Polycotylidae indet. Williston 1908	O'Gorman et al. 2011	1 element
	MACN-PV RN 1087c (cervical centra)
Reptilia - Plesiosauria - Elasmosauridae

	Elasmosauridae indet. Cope 1869	Martinelli and Forasiepi 2004	2 elements
	MACN-PV RN 1087a-b (cervical centra)
Reptilia - Hadrosauridae

	Hadrosauridae indet. Cope 1869	Martinelli and Forasiepi 2004	7 specimens
	MRPV 431/P to 437/P, fragmentary dentaries
Reptilia - Abelisauridae

	Abelisauridae indet. Bonaparte and Novas 1985	Meso et al. 2021	1 specimen
	MACN-Pv-RN 1085, tooth
Reptilia

	cf. Carcharodontosauridae indet. Stromer 1931	Martinelli and Forasiepi 2004	1 specimen
	MACN-PV RN 1086: an isolated tooth
	= Tetanurae indet. Gauthier 1986	Carrano et al. 2012
Reptilia - Dromaeosauridae

	? Dromaeosauridae indet. Colbert and Russell 1969		1 individual
	MML-195 (3 measurements)
	= Deinonychosauria indet. Colbert and Russell 1969	Novas et al. 2004
	= Austroraptor cabazai n. gen., n. sp. Novas et al. 2008	Novas et al. 2008
	MML-195
Reptilia

	cf. Neornithes sp. (Gadow 1893)	Agnolin and Novas 2012	1 specimen
	MML 206; left carpometacarpus
Reptilia - Titanosauridae

	Megaloolithidae indet. Zhao 1979	Martinelli and Forasiepi 2004	8 specimens
	MACN-PV RN 1096: fragments of eggshells and eight partial eggs
Reptilia - Saltasauridae

	Bonatitan reigi n. gen., n. sp. Martinelli and Forasiepi 2004	Martinelli and Forasiepi 2004	2 individuals
	MACN-PV RN 821 (holotype); MACN-PV RN 1061
Reptilia - Faveoloolithidae

	Sphaerovum erbeni Mones 1980	Martinelli and Forasiepi 2004	7 specimens
	nomen dubium belonging to Faveoloolithidae
Reptilia - Sphenodontidae

	Sphenodontidae indet. Cope 1871	Martinelli and Forasiepi 2004	1 specimen
	MACN-PV RN 1062, middle portion of the right lower jaw
	= Sphenodontinae indet. Cope 1871	Apesteguia and Jones 2012
	MACN-PV 1062 (partial right maxilla and two isolated teeth)
Amphibia - Temnospondyli - Calyptocephalellidae

	Leptodactylidae indet. Stirton 1953	Martinelli and Forasiepi 2004	25 elements
	MACN-PV RN 1063, fragment of right maxilla; MACN-PV RN 1066, complete right humerus; MACN-PV RN 1069, twenty three fragments of ornamented cranial hones including incomplete maxillae, and frontoparietals
	= Calyptocephalella satan Agnolin 2012	Agnolin 2012
	= Calyptocephalellidae indet. Reig 1960	Suazo Lara and Gómez 2022

	Anura indet. (Fischer von Waldheim 1813)	Martinelli and Forasiepi 2004	11 elements
	MACN-PV RN 1067, five incomplete vertebrae; MACN-PV RN 1068, five incomplete angulosplenials; MACN-PV RN 1070, fused radio and ulna
	= Calyptocephalella satan Agnolin 2012	Agnolin 2012
	= Calyptocephalellidae indet. Reig 1960	Suazo Lara and Gómez 2022
Amphibia - Temnospondyli - Pipidae

	Pipidae indet. Gray 1825	Martinelli and Forasiepi 2004	3 specimens
	MACN-PV RN 1064, almost complete sphenethmoid; MACN-PV RN 1065, sphenethmoid
	= Kuruleufenia xenopoides n. gen., n. sp. Gómez 2016	Gómez 2016
Actinopteri - Amiiformes - Amiidae

	Amia sp. Linnaeus 1766	Bogan et al. 2010	1 specimen
	MML 449, an incomplete anterior portion of right dentary
Actinopteri - Lepisosteiformes - Lepisosteidae

	Lepisosteidae indet. Cuvier 1825	Martinelli and Forasiepi 2004	6 elements
	MACN-PV RN 1071, six vertebral centra
Actinopteri

	Teleostei indet. Müller 1846	Martinelli and Forasiepi 2004	10 elements
	MACN-PV RN 1077, ten hemispherical teeth of different sizes
Actinopteri - Siluriformes

	Siluriformes indet.	Martinelli and Forasiepi 2004	5 elements
	MACN-PV RN 1074, four very small incomplete pectoral spines; MACN-PV RN 1084, incomplete pectoral spine lacking its proxinial portion
Actinopteri - Siluriformes - Diplomystidae

	Diplomystidae indet. Eigenman 1890	Martinelli and Forasiepi 2004	4 elements
	MACN-PV RN 1072, four incomplete pectoral spines
Actinopteri - Percichthyidae

	cf. Percichthyidae indet. Jordan and Eigenman 1890	Martinelli and Forasiepi 2004	19 elements
	MACN-PV RN 1081, nineteen fragmentary vertebrae
Chondrichthyes

	Chondrichthyes indet. Huxley 1880	Martinelli and Forasiepi 2004	11 elements
	MACN-PV RN 1076: eleven complete vertebral centra
see common names

Geography

Country:	Argentina	State/province:	Río Negro
Coordinates:	40.1° South, 66.8° West (view map)
Paleocoordinates:	42.9° South, 52.5° West
Basis of coordinate:	stated in text
Geographic resolution:	outcrop

Time

Period:	Cretaceous	Epoch:	Late/Upper Cretaceous

Key time interval:	Late/Upper Campanian - Early/Lower Maastrichtian
Age range of interval:	83.60000 - 66.00000 m.y. ago

Stratigraphy

Geological group:	Malargüe	Formation:	Allen	Member:	Lower
Stratigraphic resolution:	group of beds
Stratigraphy comments: lower member of formation; possibly equivalent to "egg level 5"

Lithology and environment

Primary lithology:	fine,yellow poorly lithified sandstone
Secondary lithology:	mudstone
Includes fossils?	Y
Includes fossils?	Y
Lithology description: "alternated sandstones and mudstones with small lents of conglomerates." "The fossil-bearing bed consists of friable, yellowish, fine-grained clean sandstone enclosed between siltstone layers."
Environment:	fluvial indet.
Geology comments: "a fluvial environment in the basal section"

Taphonomy

Modes of preservation:	body
Size of fossils:	macrofossils,mesofossils
Preservation of anatomical detail:	good
Associated major elements:	some
Disassociated major elements:	many
Disassociated minor elements:	many
Fragmentation:	occasional

Collection methods and comments

Collection methods:	selective quarrying,surface (float),surface (in situ),mechanical,field collection
Reason for describing collection:	general faunal/floral analysis
Museum repositories:	MACN
Collection dates:	1990–1994

Metadata

Also known as:	Salitral de Santa Rosa, El Matuasto, "Cerro Bonaparte", Lamarque
Database number:	49557
Authorizer:	M. Carrano, R. Benson, P. Mannion, E. Vlachos	Enterer:	M. Carrano, F. Aspromonte, P. Mannion, M. Jones
Modifier:	F. Aspromonte	Research group:	vertebrate
Created:	2005-04-19 14:57:44	Last modified:	2024-01-08 10:12:25
Access level:	the public	Released:	2005-04-19 14:57:44
Creative Commons license:	CC BY

Reference information

Primary reference:

76469.

F. E. Novas, J. I. Canale, and M. P. Isas. 2003. Un terópodo maniraptor del Campaniano–Maastrichtiano del norte patagónico [A maniraptoran theropod from the Campanian–Maastrichtian of the Patagonian north]. Ameghiniana 40(4 (suppl.)):63R [M. Carrano/M. Carrano]

Secondary references:

86689		F. Agnolín. 2010. A new species of the genus Atlantoceratodus (Dipnoiformes: Ceratodontoidei) from the Uppermost Cretaceous of Patagonia and a brief overview of fossil dipnoans from the Cretaceous and Paleogene of South America. Brazilian Geographical Journal 1(2):162-210 [E. Vlachos/F. Aspromonte]
73340		F. Agnolin. 2012. A new Calyptocephalellidae (Anura, Neobatrachia) from the Upper Cretaceous of Patagonia, Argentina, with comments on its systematic position. Studia Geologica Salmanticensia 48(2):129-178 [P. Mannion/P. Mannion]
38457		F. L. Agnolin and F. E. Novas. 2012. A carpometacarpus from the Upper Cretaceous of Patagonia sheds light on the Ornithurine bird radiation. Palaeontologische Zeitschrift 86(1):85-89 [M. Carrano/M. Carrano/P. Mannion]
38874		S. Apesteguia and M. E. H. Jones. 2012. A Late Cretaceous "tuatara" (Lepidosauria; Sphenodontinae) from South America. Cretaceous Research 34:154-160 [R. Benson/M. Jones/P. Mannion]
86230		S. Bogan, L. Taverne, and F. L. Agnolín. 2010. First fossil record of an amiid fish (Halecomorphi, Amiidae) from the Latest Cretaceous of Patagonia, Argentina, and comments on the status of Pappichthys patagonica Ameghino, 1906 (Teleostei, Osteoglossidae). Bulletin de l'Institut royal del Sciences naturelles de Belgique, Sciences de la Terre 80:163-170 [E. Vlachos/F. Aspromonte]
41617		M. T. Carrano, R. B. J. Benson, and S. D. Sampson. 2012. The phylogeny of Tetanurae (Dinosauria: Theropoda). Journal of Systematic Palaeontology 10(2):211-300 [M. Carrano/M. Carrano]
76416		P. Cruzado-Caballero. 2017. New hadrosaurid remains from the Late Cretaceous of Río Negro Province (Argentina, Late Cretaceous). Journal of Iberian Geology 43:307-318 [M. Carrano/M. Carrano/M. Carrano]
75729		P. Cruzado-Caballero, L. S. Filippi, A. H. Méndez, A. C. Garrido, and I. Díaz-Martínez. 2018. First ornithopod remains from the Bajo de la Carpa Formation (Santonian, Upper Cretaceous), northern Patagonia, Argentina. Cretaceous Research 83:182-193 [M. Carrano/M. Carrano/M. Carrano]
46024		P. J. Currie and A. Paulina Carabajal. 2012. A new specimen of Austroraptor cabazai, Pol, Canale, Porfiri and Calvo, 2008 (Dinosauria, Theropoda, Unenlagiidae) from the latest Cretaceous (Maastrichtian) of Río Negro, Argentina. Ameghiniana 49(4):662-667 [P. Mannion/J. Tennant/M. Carrano]
76256		M. S. Fernández. 2013. Análisis de cáscaras de huevos de dinosaurios de La Formación Allen, Cretácico Superior de Río Negro (Campaniano-Maastrichtiano): utilidad de los macrocaracteres de interés parataxonómico [Analysis of dinosaur eggshells from the Allen Formation, Upper Cretaceous of Río Negro (Campanian–Maastrichtian): usefulness of macrocharacters of parataxonomic interest]. Ameghiniana 50(1):79-97 [M. Carrano/M. Carrano]
29611	ETE	M. S. Fernández and S. D. Matheos. 2008. Estudio petrográfico de cáscaras anomrlaes de huevos de dinosaurios del Cretácico Superior (Río Negro, Argentina) [Petrographic study of abnormal dinosaur eggshells from the Upper Cretaceous (Río Negro, Argentina)]. Ameghiniana 45(4, suppl.):26R [M. Carrano/M. Carrano]
46152		Z. Gasparini, L. Salgado, and A. Parras. 2007. Late Cretaceous plesiosaurs from northern Patagonia, Argentina. Geological Journal 42:185-202 [P. Mannion/J. Tennant/F. Aspromonte]
49276		F. A. Gianechini, P. J. Makovicky, and S. Apesteguía. 2011. The teeth of the unenlagiine theropod Buitreraptor from the Cretaceous of Patagonia, Argentina, and the unusual dentition of the Gondwanan dromaeosaurids. Acta Palaeontologica Polonica 56(2):279-290 [M. Carrano/M. Carrano]
78231		F. A. Goianechini and S. Apesteguía. 2011. Unenlagiinae revisited: dromaeosaurid theropods from South America. Anais da Academia Brasileira de Ciências 83(1):163-195 [M. Carrano/M. Carrano]
62828		R. O. Gómez. 2016. A new pipid frog from the Upper Cretaceous of Patagonia and early evolution of crown-group Pipidae. Cretaceous Research 62:52-64 [P. Mannion/P. Mannion/F. Aspromonte]
29129	ETE	R. O. Gómez, A. M. Báez, and G. W. Rougier. 2008. An anilioid snake from the Upper Cretaceous of northern Patagonia. Cretaceous Research 29:481-488 [M. Carrano/M. Carrano/R. Benson]
40526		G. Grellet-Tinner, L. E. Fiorelli, and R. B. Salvador. 2012. Water vapor conductance of the Lower Cretaceous dinosaurian eggs from Sanagasta, La Rioja, Argentina: paleobiological and paleoecological implications for South American faveoloolithid and megaloolithid eggs. Palaios 27:35-47 [M. Carrano/M. Carrano]
34689	ETE	R. D. Juárez Valieri, J. O. Calvo, and S. D. Rios Díaz. 2011. Sauropods crossing formations: biostratigraphical implications for Patagonian faunal assemblages. In J. O. Calvo, J. D. Porfiri, B. J. González Riga, D. Dos Santos (eds.), Dinosaurios y Paleontología desde América Latina. Anales del III Congreso Latinoamericano de Paleontología. Editorial de la Universidad Nacional de Cuyo, Neuquén 153-160 [M. Carrano/M. Carrano]
13269	ETE	A. G. Martinelli and A. M. Forasiepi. 2004. Late Cretaceous vertebrates from Bajo de Santa Rosa (Allen Formation), Río Negro province, Argentina, with the description of a new sauropod dinosaur (Titanosauridae). Revista del Museo Argentino de Ciencias Naturales, nuevo serie 6(2):257-305 [M. Carrano/M. Carrano/F. Aspromonte]
86551		J. G. Meso, R. D. Juárez Valieri, J. D. Porfiri, S. A. S. Correa, A. G. Martinelli, G. A. Casal, J. I. Canudo, F. Poblete, and D. Dos Santos. 2021. Testing the persistence of Carcharodontosauridae (Theropoda) in the Upper Cretaceous of Patagonia based on dental evidence. Cretaceous Research 125:104875 [M. Carrano/M. Carrano]
16795	ETE	F. E. Novas, J. Canale, and M. Isasi. 2004. Giant deinonychosaurian theropod from the Late Cretaceous of Patagonia. Journal of Vertebrate Paleontology 24(3):98A [M. Carrano/M. Carrano]
28884	ETE	F. E. Novas, D. Pol, J. I. Canale, J. D. Porfiri, and J. O. Calvo. 2008. A bizarre Cretaceous theropod dinosaur from Patagonia and the evolution of Gondwanan dromaeosaurids. Proceedings of the Royal Society B [M. Carrano/M. Carrano]
86335		J. P. O'Gorman, L. Salgado, and Z. Gasparini. 2011. Plesiosaurios de la Formación Allen (Campaniano-Maastrichtiano) en el área del Salitral de Santa Rosa (Provincia de Río Negro, Argentina). Ameghiniana 48(1):129-135 [E. Vlachos/F. Aspromonte]
85526		F. Suazo Lara and R. O. Gómez. 2022. In the shadow of dinosaurs: Late Cretaceous frogs are distinct components of a widespread tetrapod assemblage across Argentinean and Chilean Patagonia. Cretaceous Research 131:105085 [P. Mannion/P. Mannion]