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Paraná Formation
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Paraná Formation

The Paraná Formation is a geologic formation in Argentina. It preserves fossils dating back to the late Miocene epoch.

Key Information

Fossil content

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Color key
Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Mammals

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Cetaceans

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Cetaceans reported from the Paraná Formation
Genus Species Presence Material Notes Images
cf. Aulophyseter cf. A. sp. Cantera del Puerto Viejo near Paraná, Entre Ríos.[1] Incomplete tooth (MACN Pv 8926).[1] Now deemed an indeterminate physeteroid.[2]
Balaenidae gen. et. sp. indet. Indeterminate Right tympanic bulla (MACN Pv 13221).[1] A balaenid.
Balaenoptera B. sp. Right tympanic bulla (MACN Pv 13220).[1] A rorqual.
Balaenopteridae indet. South Bank of Ensenada Creek.[3] Cubitus & radius (CICYTTP-PV-1-197) bearing bite marks matching Cosmopolitodus hastalis.[3] A rorqual.
Physeteroidea gen. et. sp. indet. Indeterminate Cantera del Puerto Viejo near Paraná, Entre Ríos.[2] An almost complete tooth (MAS Pv 1361) & a fragmentary tooth (MACN Pv 8926).[2] Previously identified as cf. Aulophyseter sp.[2]
Platanistoidea indet. Left tympanic bulla (MACN Pv 15997).[1] A relative of river dolphins.
Pontistes P. rectifrons [4] A pontoporiid.
Prionodelphis P. rovereti A single tooth.[5] A dubious delphinoid, other specimens once referred to this taxon are now thought to represent monachine seals.[5]

Pinnipeds

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Pinnipeds reported from the Paraná Formation
Genus Species Presence Material Notes Images
Properiptychus P. argentinus Jaw & limb elements.[6] A monachine seal.

Rodents

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Rodents reported from the Paraná Formation
Genus Species Presence Material Notes Images
cf. Cardiatherium cf. C. sp. indet. La Juanita locality.[7] Left isolated cheek tooth (CICYTTP-PV-M-1-147) & right upper cheek tooth (CICYTTP-PV-M-1-148).[7] A hydrochoerine.
Caviidae gen. & sp. indet. Indeterminate La Juanita locality.[7] A left upper M1-2 (CICYTTP-PV-M-2-267).[7] A cavy.
Plesiacarechimys P. nov. sp.? La Juanita locality.[7] Right lower molar (CICYTTP-PV-M-1-145).[7] An octodontoid.

Sirenians

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Sirenians reported from the Paraná Formation
Genus Species Presence Material Notes Images
Dioplotherium D. sp. Cliffs along Paraná River, Villa Urquiza.[8] Upper left molar (CORD-PZ 4301).[8] A dugongid.
Metaxytherium M. sp. Cerro La Matanza locality, Victoria City.[8] Posterior end of both maxillae (MASP 373).[8] A dugongid.

Xenarthrans

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Xenarthrans reported from the Paraná Formation
Genus Species Presence Material Notes Images
Scirrotherium S. sp. indet. La Juanita locality.[7] A fixed osteoderm (CICYTTP-PV-M-1-144).[7] A pampatheriid.

Birds

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Birds reported from the Paraná Formation
Genus Species Presence Material Notes Images
Pelecanus P. paranensis Cerro La Matanza locality, Victoria City.[9] A nearly complete pelvis (CICYTTP-PV-A-3-277).[9] A pelican.
cf. Phoenicopterus cf. P. sp. indet. La Juanita locality.[7] Fragment of shaft with distal end of left tibiotarsus (CICYTTP-PV-A-1-12).[7] A flamingo.

Fish

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Bony fish

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Bony fish reported from the Paraná Formation
Genus Species Presence Material Notes Images
Siluroidae Undetermined Abundant fragmentary specimens.[10] Evidently represents extant catfish genera.[10]
Tetraodontidae indet. Indeterminate La Juanita & Toma Vieja localities.[11] Several premaxillary beaks.[11] Remains of pufferfish.

Rays

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Rays reported from the Paraná Formation
Genus Species Presence Material Notes Images
Dynatobatis D. paranensis Dermal tubercles.[10]
Myliobatis M. americanus Detached teeth.[10]
Raja R. agassizi Dermal tubercles.[10] Moved to the genus Rioraja.
Rioraja R. agassizii Dermal tubercles.[10] A skate, originally reported as Raja agassizi.

Sharks

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Sharks reported from the Paraná Formation
Genus Species Presence Material Notes Images
Carcharias C. (Prionodon) obliquidens Teeth.[10] Junior synonym of Squalus obliquidens.[12]
Carcharodon C. megalodon Teeth.[10] Reassigned to the genus Otodus.
C. sp. Arroyo Ensenada valley.[13] 2 teeth (UAP 1301 & 1303).[13] Related to the great white shark.
Cestracion C. paranensis 2 teeth.[10] Cestracion is now a junior synyonym of Heterodontus.
Cosmopolitodus C. hastalis Several teeth.[10] A mackerel shark, originally reported as Oxyrhina hastalis.
Galeocerdo G. aduncus Tooth.[10] A requiem shark.
Hemipristis H. serra A few well-preserved upper teeth.[10] A large weasel shark.
Heterodontus H. paranensis 2 teeth.[10] A bullhead shark, originally reported as Cestracion paranensis.
Megascyliorhinus M. trelewensis La Juanita locality.[14] 4 anterior teeth.[14] A ground shark, specimens originally labelled "Squatina".[14]
Odontaspis O. elegans Teeth.[10]
Otodus O. megalodon Teeth.[10] A megatooth shark, originally reported as Carcharodon megalodon.
Oxyrhina O. hastalis Several teeth.[10] Reassigned to the genus Cosmopolitodus.
Squalus S. obliquidens Teeth.[10] Originally reported as Carcharias (Prionodon) obliquidens.

Invertebrates

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Bivalves

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Bivalves reported from the Paraná Formation
Genus Species Presence Material Notes Images
Aequipecten A. paranensis Valves.[15] A scallop.
Amusium A. darwinianum [15] A scallop.
Erodona E. doellojuradoi La Juanita & La Paz.[16] 260 specimens.[16] An erodonid.
Flabellipecten F. oblongus Valves.[15] A scallop.
Polymesoda P. muravchiki La Juanita.[16] 13 specimens.[16] A cyrenid.

Bryozoans

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Bryozoans reported from the Paraná Formation
Genus Species Presence Material Notes Images
Acanthodesia A. cf. sulcata Punta Gorda, near Diamante, Entre Ríos.[17] Fragments of colonies (MLP 13471 to 13476).[17] A cheilostomatid.
Microporella M. sp. Punta Gorda, near Diamante, Entre Ríos.[17] Fragments of colonies (MLP 13477 to 13483).[17] A microporellid.
Schizoporella S. sp. Punta Gorda, near Diamante, Entre Ríos.[17] Fragments of colonies (MLP 13474, MLP 13484 to 13488).[17] A schizoporellid.
Schizoporellidae indet. Indeterminate Punta Gorda, near Diamante, Entre Ríos.[17] Fragments of colonies (MLP 13489).[17] A schizoporellid.
Schizosmittina S. sp. Punta Gorda, near Diamante, Entre Ríos.[17] Fragments of colonies (MLP 13486, MLP 13490 to 13492).[17] A bitectiporid.
Tubulipora T. sp. Punta Gorda, near Diamante, Entre Ríos.[17] Two colonies (MLP 13493 & MLP 13494).[17] A tubuliporid.

Echinoderms

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Echinoderms reported from the Paraná Formation
Genus Species Presence Material Notes Images
Abertella A. sp. [18] A sand dollar.
Amplaster A. alatus [18] A sand dollar.
A. ellipticus [18] A sand dollar.
Monophoraster M. duboisi [18] A sand dollar.
Neognathostomata Indeterminate An immature specimen.[18] A sea urchin.
Ophiocoma O. sp. [18] A brittle star.
Ophiothrix O. sp. [18] A brittle star.

Plants

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Plants reported from the Paraná Formation
Genus Species Presence Material Notes Images
Astroniumxylon A. parabalansae Toma Vieja fossil locality.[19] Fossil wood.[19] An anacardiaceaen.
Laurophyllum L. sp. Villa Urquiza.[20] Leaves.[20] A lauraceaen.
Myrciophyllum M. paranaesianum Villa Urquiza.[20] Leaves.[20] A myrtaceaen.
Ocotea O. sp. Villa Urquiza.[21] Leaves.[21] A lauraceaen.
Piptadenioxylon P. paraexcelsa Toma Vieja fossil locality.[19] Fossil wood.[19] A mimosoid.
Schinus S. aff. terebinthifolius Villa Urquiza.[20] Leaves.[20] An anacardiaceaen.
Solanumxylon S. paranensis Toma Vieja fossil locality.[19][22] Fossil wood.[19] A nightshade.

Correlations

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Laventan

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Laventan correlations in South America
Formation Honda Honda Aisol Cura-Mallín Pisco Ipururo Pebas Capadare Urumaco Inés Paraná Map
Basin VSM Honda San Rafael Caldera Pisco Ucayali Amazon Falcón Venezuela Paraná
Paraná Formation is located in South America
Paraná Formation
Paraná Formation
Paraná Formation
Paraná Formation
Paraná Formation
Paraná Formation
Paraná Formation
Paraná Formation
Paraná Formation
Paraná Formation
Paraná Formation
Paraná Formation (South America)
Country  Colombia  Bolivia  Argentina  Chile  Peru  Venezuela  Argentina
Boreostemma
Hapalops
Miocochilius
Theosodon
Xenastrapotherium
Mylodontidae
Sparassodonta
Primates
Rodents
Birds
Terror birds
Reptiles
megalodon
Flora
Insects
Environments Fluvial Fluvio-deltaic Fluvio-lacustrine Fluvio-deltaic Fluvial
Laventan volcanoclastics

Laventan fauna

Laventan flora
Volcanic Yes

Huayquerian

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Huayquerian correlations in South America
Formation Cerro Azul Ituzaingó Paraná Camacho Raigón Andalhuala Chiquimil Las Flores Maimará Palo Pebas Muyu Rosa Saldungaray Salicas Urumaco Map
Basin Colorado Paraná Hualfín Tontal Andes Salta Amazon Huasi Altiplano BA Velasco Falcón
Paraná Formation is located in South America
Paraná Formation
Paraná Formation
Paraná Formation
Paraná Formation
Paraná Formation
Paraná Formation
Paraná Formation
Paraná Formation
Paraná Formation
Paraná Formation
Paraná Formation
Paraná Formation
Paraná Formation
Paraná Formation
Paraná Formation
Paraná Formation (South America)
Country  Argentina  Uruguay  Argentina  Brazil
 Peru
 Bolivia  Argentina  Venezuela
Cardiatherium
Lagostomus
Macroeuphractus
Proeuphractus
Pronothrotherium
Pseudotypotherium
Thylacosmilus
Xotodon
Macraucheniidae
Primates
Rodents
Reptiles
Birds
Terror birds
Flora
Environments Aeolian-fluvial Fluvio-deltaic Fluvial Fluvio-lacustrine Fluvial Fluvio-lacustrine Fluvio-deltaic
Huayquerian volcanoclastics

Huayquerian fauna

Huayquerian flora
Volcanic Yes

References

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