Sarmiento Formation
The Sarmiento Formation (Spanish: Formación Sarmiento), in older literature described as the Casamayor Formation, is a geological formation in Chubut Province, Argentina, in central Patagonia, which spans around 30 million years from the mid-Eocene to the early Miocene. It predominantly consists of pyroclastic deposits,[1] which were deposited in a semi-arid environment.[2] It is divided up into a number of members.[1] The diverse fauna of the Sarmiento Formation, including a variety of birds, crocodilians, turtles and snakes, also includes many mammals such as South American native ungulates (notoungulates, litopterns, astrapotheres) as well as armadillos, and caviomorph rodents.[3]
| Sarmiento Formation | |
|---|---|
| Stratigraphic range: Bartonian-Burdigalian (Casamayoran-Colhuehuapian) ~ | |
 | |
| Sub-units | Colhué Huapí Member, Gran Barranca Member, Puesto Almendra Member, Rosado Member, Trelew Member, and Vera Member |
| Underlies | Chenque Formation Gaiman Formation |
| Overlies | Koluel Kaike Formation (Río Chico Group) |
| Thickness | 319 metres |
| Lithology | |
| Primary | Sandstone, mudstone |
| Other | Limestone |
| Location | |
| Country |  Argentina |
| Extent | Golfo San Jorge Basin |
| Type section | |
| Named for | Sarmiento, Chubut |
| Region | Chubut Province |
| Country | Argentina |
| Thickness at type section | 319 metres (1,047 ft) (tuffs) |
 Location of the Sarmiento Formation within Argentina | |
Paleofauna
Amphibians
| Name | Species | Member/Locality | Material | Notes | Image |
|---|---|---|---|---|---|
| Anura indet.[4] | Currently undescribed | Upper Puesto Almendra Member | |||
| Calyptocephalella[5] | C. canqueli | Upper Puesto Almendra Member | A calyptocephalellid frog |  | |
| Eupsophus[5] | E. sp. | Upper Puesto Almendra Member | An alsodid frog |  | |
| Neoprocoela[5] | N. edentatus | Upper Puesto Almendra Member | A leptodactylid frog | ||
Birds
| Name | Species | Member/Locality | Material | Notes | Image |
|---|---|---|---|---|---|
| Andrewsornis[6] | A. abotti | Upper Puesto Almendra Member | A phorusrhacid |  | |
| Loxornis[7] | L. clivus | Upper Puesto Almendra Member | |||
| Physornis[7] | P. sp. | Upper Puesto Almendra Member | A phorusrhacid | ||
| Telmabates[8] | T. antiquus
T. howardae |
Upper Puesto Almendra Member | A presbyornithid | ||
Crocodylomorphs
| Name | Species | Member/Locality | Material | Notes | Image |
|---|---|---|---|---|---|
| Eocaiman[9] | E. cavernensis | Gran Barranca Member | A caiman | ||
| Sebecus[10] | S. icaeorhinus | Gran Barranca Member | Disarticulated skull, mandible, and some postcranial material. | A sebecid notosuchian. |  |
Lepidosaurs
| Name | Species | Member/Locality | Material | Notes | Image |
|---|---|---|---|---|---|
| Chubutophis[11] | C. grandis | Gran Barranca Member | A boa snake | ||
| Gaimanophis[12] | G. tenuis | Trelew Member | A boa snake | ||
| Iguanidae indet.[13] | Currently undescribed | Upper Puesto Almendra Member | |||
| Madtsoia[14] | M. bai
M. sp. |
Gran Barranca and Upper Puesto Almendra Members | A madtsoiid snake |  | |
| Waincophis[15] | W. australis | Gran Barranca Member | A boa snake | ||
Testudines
| Name | Species | Member | Material | Notes | Image |
|---|---|---|---|---|---|
| Chelonoidis[16] | C. gringorum | Trelew Member | A tortoise | ||
| Gaffneylania[17] | G. auricularis | A meiolaniid stem-turtle | |||
| Niolamia | N. argentina | Gran Barranca Member |  | ||
| Testudininae indet.[18] | Currently undescribed | Puesto Almendra Member | A tortoise | ||
Meridiolestidans
| Name | Species | Member/Locality | Material | Notes | Image |
|---|---|---|---|---|---|
| Necrolestes[19] | N. mirabilis | Colhué Huapí Member | Youngest known meridiolestidan |  | |
Meridiungulates
| Name | Species | Member/Locality | Material | Notes | Image |
|---|---|---|---|---|---|
| Acoelodus | A proclivus | Gran Barranca Member | A notoungulate of uncertain affinities. | ||
| Acoelohyrax | A. sigma
A. complicatissimus |
Gran Barranca Member | A notohippid notoungulate | ||
| Adiantoides[20] | A. magnus | Gran Barranca Member | An indaleciid litoptern |  | |
| Albertogaudrya | A. carahuasensis
A. unica |
Gran Barranca Member | An astrapothere |  | |
| Amilnedwardsia[21] | A. brevicula | Gran Barranca Member | |||
| Ancylocoelus[22] | A. frequens | Puesto Almendra Member | A leontiniid notoungulate | ||
| Anisolambda [23] | A. amel
A. fissidens |
Gran Barranca Member | A proterotheriid litoptern | ||
| Anisotemnus | A. distentus | Gran Barranca and Vera Members | |||
| Antepithecus[24] | A. brachystephanus
A. innexus |
Gran Barranca and Rosado Members | A notopithecid notoungulate | ||
| Archaeohyrax[25] | A. patagonicus | Gran Barranca and Puesto Almendra Members | A archaeohyracid notoungulate |  | |
| Archaeophylus[26] | A. patrius | Puesto Almendra Member | A interatheriid notoungulate | ||
| Archaeopithecus[23] | A. rogeri | Gran Barranca Member | A archaeopithecid notoungulate | ||
| Archaeotypotherium[25] | A. propheticus | Puesto Almendra and Vera Members | An archaeohyracid notoungulate | ||
| Argyrohippus[27] | A. boulei
A. fraterculus A. praecox |
Colhué Huapí and Puesto Almendra Members | |||
| Argyrohyrax[28][29] | A. proavus | Puesto Almendra Member | |||
| Asmodeus | A. osborni | Puesto Almendra Member | |||
| Astraponotus | A. assymmetrus
A. dicksoni A. dilatatus A. holdichi A. thompsoni |
Gran Barranca Member |  | ||
| Astrapotherium[30] | A. ruderarium | Colhué Huapí member |  | ||
| Astrapotheriidae indet. | Currently undescribed | Colhué Huapí Member | |||
| Bryanpattersonia[25] | B. sulcidens | Puesto Almendra and Vera Members | Genus probably a synonym of Archaeotypotherium | ||
| Cochilius[9] | C. brevirostris
C. fumensis
|
Colhué Huapí and Puesto Almendra Members |  | ||
| Colpodon | C. distinctus
C. propinquus C. sp. |
Colhué Huapí Member | A leontiniid. | ||
| Coniopternium[31] | C. andinum | Puesto Almendra Member | A macraucheniid litoptern |  | |
| Cramauchenia[31] | C. normalis | Colhué Huapí and Puesto Almendra Members | Nearly complete skull and humerus | A macraucheniid litoptern |  |
| Cramaucheniinae indet.[4] | Currently undescribed | Puesto Almendra Member | |||
| Deuterotherium[4] | D. distichum | Puesto Almendra Member | |||
| Didolodus[21] | D. multicuspsis
D. magnus D. minor D. latigonus |
Gran Barranca and Rosado Members | All species mostly known from dental remains | A didolodontid. |  |
| Edvardotrouessartia | E. sola | Gran Barranca Member |  | ||
| Eohyrax | E. isotemnoides
E. platyodus E. praerusticus |
Gran Barranca and Rosado Members | |||
| Eolicaphrium[21][32] | E. primarium | Gran Barranca Member | A litoptern | ||
| Eomorphippus | E. bondi
E. neilopdykei E. obscurus |
Rosado and Lower Puesto Almendra members |  | ||
| Eopachyrucos[3][25] | E. pliciformis
E. pliciferus |
Rosado and Puesto Almendra Members | Mandibular and skull remains | An interatheriid. |  |
| Ernestohaeckelia | E. aculeata
E. acutidens |
Gran Barranca Member | A litoptern | ||
| Ernestokokenia[21] | E. nitida
E. patagonica |
Gran Barranca Member | Mostly known from dental remains | A didolodontid. | |
| Eurygenium[33] | E. latirostris | Puesto Almendra Member | |||
| Guilielmofloweria | G. plicata | Gran Barranca Member | A proterotheriid. | ||
| Guilielmoscottia[25] | G. plicifera | Rosado and Vera Members | A interatheriid notoungulate | ||
| Hegetotheriopsis[34] | H. sulcatus | Trelew Member | |||
| Hegetotherium[34] | H. novum | Trelew Member |  | ||
| Homalostylops | H. atavus
H. parvus |
Gran Barranca and Rosado Members | A notostylopid notoungulate | ||
| Henricofilholia | H. lustrata
H. cingulata H. circumdata H. intercincta H. vucetichia |
Upper Puesto Almendra Member | An astrapothere | ||
| Henricosbornia | H. ampla
H. lophodonta H. minuta |
Gran Barranca Member | |||
| Interatherium[35] | I. sp. | Colhué Huapí Member | An interatheriid |  | |
| Isotemnus | Isotemnus ctalego
Isotemnus haugi Isotemnus latidens Isotemnus primitivus |
Gran Barranca Member | |||
| Isotemnidae indet.[3] | Currently undescribed | Puesto Almendra Member | |||
| Lambdaconus | L. lacerum | Colhué Huapí Member |  | ||
| Leontinia[4][3] | L. gaudryi
L. sp. |
Puesto Almendra Member |  | ||
| Maddenia[36] | M. lapidaria | Puesto Almendra Member | |||
| Maxschlosseria | M. consumata
M. expansa M. minima M. minuta M. praeterita M. rusticula M. septa |
Gran Barranca Member | An oldfieldthomasiid notoungulata | ||
| Medistylus[37] | M. dorsatus | Puesto Almendra Member | |||
| Morphippus | M. complicatus
M. fraternus M. hypselodus M. imbricatus M. quadrilobus |
Puesto Almendra Member |  | ||
| Notopithecus[25] | N. adapinus | Gran Barranca and Rosado Members |  | ||
| Notostylops | N. murinus
N. appressus N. pendens N. pigafettai N. sp. |
Gran Barranca and Rosado Members |  | ||
| Oldfieldthomasia | O. anfractuosa
O. debilitata O. parvidens O. transversa |
Gran Barranca Member | |||
| Othnielmarshia | O. curviristra
O. lacunifera O. reflexa |
Gran Barranca Member | |||
| Pachyrukhos[38] | P. sp. | Colhué Huapí Member |  | ||
| Paginula | P. parca | Gran Barranca Member | |||
| Paramacrauchenia[39] | P. scamnata
P. inexspectata |
Colhué Huapí Member |  | ||
| Parastrapotherium[4][30] | P. cingulatum
P. ephebicum P. holmbergi P. lemoinei P. trouessarti P. sp. |
Colhué Huapí and Puesto Almendra Members |  | ||
| Patagonhippus[27] | P. canterensis
P. dukei |
Puesto Almendra Member | A notohippid notoungulate | ||
| Paulogervaisia[25] | P. inusta | Gran Barranca and Rosado Members | |||
| Peripantostylops | P. minutus | Gran Barranca Member | |||
| Periphragnis[21] | P. exauctus
P. sp. |
Rosado Member |  | ||
| Pleurostylodon | P. complanatus
P. crassiramis P. modicus P. recticrista P. similis |
Gran Barranca, Rosado, and Vera Members | |||
| Polymorphis[32] | P. lechei | Gran Barranca Member | A macraucheniid litoptern | ||
| Proadiantus[7] | P. excavatus | Puesto Almendra Member | |||
| Proadinotherium[7] | P. leptognathus | Puesto Almendra Member |  | ||
| Proargyrohyrax[40][25][3] | P. curanderensis
P. sp. |
Vera Member | An interatheriid notoungulate |  | |
| Proectocion | P. argentinus
P. precisus |
Gran Barranca Member | An adianthid litoptern | ||
| Progaleopithecus[28] | P. fissurellatus
P. tournoueri P. sp. |
Puesto Almendra Member | A interatheriid notoungulate | ||
| Prohegetotherium[4] | P. sculptum
P. sp. |
Puesto Almendra Member |  | ||
| Proheptaconus[41] | P. patagonicus | Colhué Huapí and Trelew Members | An adianthid litoptern | ||
| Prolicaphrium[42][43] | P. spectabile
P. specillatum |
Colhué Huapí Member | A proterotheriid litoptern | ||
| Propachyrucos[38] | P. smithwoodwardi | Puesto Almendra Member | |||
| Propyrotherium[44][45] | P. saxeum | Gran Barranca Member |  | ||
| Prosotherium[38] | P. garzoni | Puesto Almendra Member |  | ||
| Protarchaeohyrax[3][25] | P. minor | Puesto Almendra Member | A archaeohyracid notoungulate | ||
| Proterotheriidae indet.[3] | Currently undescribed | Puesto Almendra Member | |||
| Protheosodon[7] | P. coniferus | Puesto Almendra Member |  | ||
| Protypotherium[46] | P. sp. | Colhué Huapí Member |  | ||
| Pseudhyrax[25] | P. eutrachytheroides | Puesto Almendra Member | |||
| Pternoconius[47][48][49] | P. polymorphoides
P. tournoueri P. bondi |
Colhué Huapí and Puesto Almendra Members | |||
| Puelia | P. sigma
P. coarctatus |
Gran Barranca, Rosado, and Vera Members | A notohippid notoungulate |  | |
| Pyrotherium[50] | P. romeroi | Puesto Almendra Member |  | ||
| Rhynchippus[3][51][52] | R. pumilus
R. equinus R. sp. |
Puesto Almendra Member |  | ||
| Rosendo[53] | R. pascuali | Vera Member | A notohippid notoungulate | ||
| Rutimeyeria[54] | R. conulifera | Gran Barranca Member | A litoptern | ||
| Santiagorothia[25] | S. chiliensis | Vera Member | |||
| Scaglia[23][55] | S. kraglievichorum | Gran Barranca Member | |||
| Scarrittia[22] | S. canquelensis
S. barranquensis |
Puesto Almendra Member |  | ||
| Sparnotheriodon[20] | S. epsilonoides | Gran Barranca Member | |||
| Teratopithecus[56] | T. elpidophoros | Gran Barranca Member | |||
| Tetragonostylops[55] | T. apthomasi | Gran Barranca Member | |||
| Tetramerorhinus[46] | T. sp. | Colhué Huapí Member |  | ||
| Teushentherium[3][57] | T. camaronensis | Puesto Almendra Member | |||
| Theosodon[58][39] | T.? frenguellii | Colhué Huapí Member |  | ||
| Thomashuxleya[21] | T. rostrata
T. externa |
Gran Barranca Member | |||
| Trachytherus[4][59] | T. spegazzinianus
T. sp. |
Puesto Almendra Member |  | ||
| Transpithecus | T. obtentus
T. sp. |
Gran Barranca and Rosado Members | |||
| Tricoelodus[41] | T. bicuspidatus | Puesto Almendra Member | An adianthid litoptern | ||
| Trigonolophodon[60] | T. elegans
T. inflatus |
Gran Barranca Member | A homalodotheriid notoungulate | ||
| Trigonostylops | T. wortmani
T. sp. |
Gran Barranca Member | An astrapothere |  | |
| Ultrapithecus | U. rutilans | Gran Barranca and Rosado Members | |||
| Victorlemoinea[32] | V. labyrinthica
V. emarginata V. longidens V. sp. |
Gran Barranca Member | |||
Xenarthrans
| Name | Species | Member/Locality | Material | Notes | Image |
|---|---|---|---|---|---|
| Archaeutatus[3][61] | A. malaspinensis
A. sp. |
Upper Puesto Almendra Member | |||
| Astegotherium[32] | A. dichotomum | Gran Barranca Member | |||
| Barrancatatus[61] | B. rigidus
B. maddeni B. sp. |
Vera and Upper Puesto Almendra Members | |||
| Clypeotherium | C. magnum | Upper Puesto Almendra Members | |||
| Cochlops | C. sp. | Colhué Huapí Member | |||
| Glyptodontinae indet.[62][3][43] | Currently undescribed | Colhué Huapí and Upper Puesto Almendra Members | |||
| Hapaloides[62] | H. ignavus
H. laeviusculus H. ponderosus H. sp. |
Colhué Huapí Member | |||
| Holomegalonyx[62] | H. menendezi | Colhué Huapí Member | |||
| Machlydotherium[62][3] | M. ater
M. sparsum M. sp. |
Gran Barranca, Rosado, Upper Puesto Almendra, and Vera Members |  | ||
| Mazzoniphractus[61] | M. ingens | Rosado Member | |||
| Megalonychidae indet.[43] | Currently undescribed | Colhué Huapí Member | |||
| Meteutatus[62][3][7] | M. anthinus
M. ascendens M. concavus M. confluens M. lagenaformis M. lucidus M. minutus M. nepotulus M. percarinatus M. tortuosus M. sp. |
Gran Barranca, Rosado, Upper Puesto Almendra, and Vera Members | |||
| Nematherium[46] | N. sp. | Colhué Huapí Member |  | ||
| Octodontotherium[7] | O. grande
O. crassidens |
Upper Puesto Almendra Member |  | ||
| Palaeopeltis[7] | P. inornatus | Upper Puesto Almendra Member | |||
| Parutaetus[63][61][3] | P. chicoensis
P. chilensis P. clusus P. signatus |
Gran Barranca, Rosado, Upper Puesto Almendra, and Vera Members | |||
| Peltephilus[3][46] | P. pumilus
P. undulatus P. sp. |
Colhué Huapí and Upper Puesto Almendra Members |  | ||
| Peltephilidae indet.[62] | Currently undescribed | Colhué Huapí, Rosado, Upper Puesto Almendra, and Vera Members | |||
| Proeuphractus[7] | P. setiger | Upper Puesto Almendra Member | |||
| Proeutatus[62][64] | P. oenophorum
Proeutatus robustus P. sp. |
Colhué Huapí Member | _(7005553277).jpg.webp) | ||
| Propalaehoplophorus | P sp. | Colhué Huapí Member |  | ||
| Proplatyarthrus[32] | P longipes | Vera Member | |||
| Proschismotherium[42][62] | P. oppositum
P. sp. |
Colhué Huapí Member |  | ||
| Prostegotherium[42][21] | P. astrifer
P. notostylopianum P. sp. |
Gran Barranca Member | |||
| Prozaedyus[7][62][64][46] | P. humilis
P. impressus P. planus P. sp. |
Colhué Huapí and Upper Puesto Almendra Members | _(6859432278).jpg.webp) | ||
| Pseudoglyptodon[65][3] | P. chilensis | Gran Barranca and Upper Puesto Almendra Members | |||
| Stegosimpsonia[62][61] | S. chubutanum | Colhué Huapí, Gran Barranca, and Rosado Members | |||
| Stegotherium[62][66][61][46] | S. caroloameghinoi
S. pascuali S. tessellatum S. variegatum |
Colhué Huapí Member |  | ||
| Stegotheriini indet.[61] | Currently undescribed | Colhué Huapí, Rosado, Upper Puesto Almendra, and Vera Members | |||
| Stenotatus[62][63][46] | S. centralis
S. patagonicus S. ornatus S sp. |
Colhué Huapí, Upper Puesto Almendra, and Vera Members | _(6859432828).jpg.webp) | ||
| Utaetus[42][62][61] | U. buccatus
U. deustus U. laevus U. lenis |
Gran Barranca and Rosado Members | |||
Metatherians
| Name | Species | Member/Locality | Material | Notes | Image |
|---|---|---|---|---|---|
| Abderites[46] | A. meridionalis | Colhué Huapí Member | |||
| Abderitidae indet.[19] | Currently undescribed | Colhué Huapí Member | |||
| Acdestodon[67] | A. bonapartei | Upper Puesto Almendra Member | |||
| Acdestoides[7] | A. praecursor | Upper Puesto Almendra Member | |||
| Acrocyon[19] | A. riggsi | Colhué Huapí Member | |||
| Acyon[68] | A. tricuspidatus | Colhué Huapí Member | |||
| Amphidolops[32] | A. serrula | Gran Barranca Member | |||
| Anargyrolagus[69] | A. primus | Trelew Member | |||
| Angelocabrerus[70] | A. daptes | Gran Barranca Member | |||
| Arctodictis[19] | A. sinclairi | Colhué Huapí Member | |||
| Arminiheringia[42][23] | A auceta | Gran Barranca Member | |||
| Australohyaena[71] | A. antiqua | Upper Puesto Almendra Member | |||
| Borhyaena[19] | B. macrodonta | Colhué Huapí Member |  | ||
| Caenolestoides[72] | C. miocaenicus | Colhué Huapí Member | |||
| Canchadelphys[73] | C. cristata | Vera Member | |||
| Carlothentes[7] | C. chubutensis | Upper Puesto Almendra Member | |||
| Caroloameghinia[32][21][4] | C. mater
C. tenuis |
Gran Barranca Member | |||
| Cladosictis[19] | C. centralis
C sp. |
Colhué Huapí Member |  | ||
| Clenia[19][73] | C. minuscula
C. brevis |
Colhué Huapí and Vera Members | |||
| Coona[74] | C. gaudryi
C. gutierrezi C. pattersoni |
Gran Barranca Member | |||
| Didelphimorphia indet.[19] | Currently undescribed | Colhué Huapí Member | |||
| Eomicrobiotherium[19] | E. matutinum
E. mykerum |
Colhué Huapí, Trelew, Upper Puesto Almendra, and Vera Members | |||
| Epikhlonia[73] | E. verticalis | Vera Member | |||
| Eudolops[75] | E. tetragonus | Gran Barranca Member | |||
| Evolestes[73] | E. sp. | Upper Puesto Almendra Member | |||
| Gaimanlestes[72] | G. pascuali | Trelew Member | |||
| Hathliacynidae indet.[19][73] | Currently undescribed | Colhué Huapí and Vera Members | |||
| Hondonadia[73] | H. fierroensis
H. parca H. praecipitia H. pumila |
Upper Puesto Almendra and Vera Members | |||
| Kramadolops[73] | K. fissuratus
K. hernandezi K. maximus K. mayoi |
Gran Barranca, Upper Puesto Almendra, and Vera Members | |||
| Microbiotherium[73] | M. praecursor
M. sp. |
Colhué Huapí and Vera Members | |||
| Microbiotheriidae indet.[19] | Currently undescribed | Colhué Huapí Member | |||
| Nemolestes[32] | N. spalacotherinus | Gran Barranca Member | |||
| Notogale[76][7] | N. mitis | Upper Puesto Almendra Member | |||
| Oligobiotherium[75] | O. divisum | Colhué Huapí Member | |||
| Patagonia[19] | P. peregrina | Trelew Member | A metatherian of uncertain placement | ||
| Pachybiotherium[19][75] | P. acclinum | Colhué Huapí Member | |||
| Palaeothentes[67] | P. marshalli
P. migueli P. minutus |
Colhué Huapí and Upper Puesto Almendra Members |  | ||
| Palaeothentidae indet.[19] | Currently undescribed | Colhué Huapí and Upper Puesto Almendra Members | |||
| Parabderites[76] | P. bicrispatus
P. minisculus |
Colhué Huapí and Upper Puesto Almendra Members | |||
| Periakros[73] | P. ambiguus | Vera Member | |||
| Pharsophorus[73] | P. lacerans
P. tenax |
Upper Puesto Almendra Member | |||
| Pichiplidae indet.[73] | Currently undescribed | Upper Puesto Almendra and Vera Members | |||
| Pilchenia[73] | P. antiqua
P. intermedia P. lobata P. lucina |
Upper Puesto Almendra and Vera Members | |||
| Polydolops[32] | P. crassus
P. serra P. tetragonus P. thomasi P. unicus |
Gran Barranca Member | |||
| Praedens[73] | P. aberrans | Vera Member | |||
| Proargyrolagus[19] | P. argentinus | Colhué Huapí Member | |||
| Proborhyaena[76] | P. gigantea | Upper Puesto Almendra Member |  | ||
| Procladosictis[32] | P. erecta | Gran Barranca Member | |||
| Progarzonia | P. notostylopense | Gran Barranca Member | |||
| Pseudothylacynus[75] | P. rectus | Colhué Huapí Member | |||
| Rosendolops[77] | R. ebaios
R. primigenium |
Gran Barranca, Upper Puesto Almendra, and Vera Members | |||
| Rosendolopidae indet.[73] | Currently undescribed | Upper Puesto Almendra and Vera Members | |||
| Sipalocyon[19] | S. externus
S. sp. |
Colhué Huapí Member | |||
| Stilotherium[72] | S. parvum | Colhué Huapí Member | |||
| Thylacosmilidae indet.[19] | Currently undescribed | Colhué Huapí Member | |||
| Trelewthentes[67] | T. rothi | Upper Puesto Almendra Member | |||
Rodents
| Name | Species | Member/Locality | Material | Notes | Image |
|---|---|---|---|---|---|
| Acarechimys[78][64] | A. leucotheae
A. minutissimus A sp. |
Colhué Huapí, Puesto Almendra, and Trelew Members | |||
| Acaremys[79][80][64] | A. preminutus
A. murinus A. sp. |
Colhué Huapí and Trelew Members | |||
| Asteromys[78] | A. punctus
A. sp. |
Upper Puesto Almendra Member | |||
| Australoprocta[81][64] | A. fleaglei | Trelew Member | |||
| Banderomys[82] | B. leanzai | Colhué Huapí Member | |||
| Branisamyopsis[83] | B. australis | Colhué Huapí Member | |||
| Caviocricetus[84] | C. lucasi | Colhué Huapí and Trelew Members | |||
| Caviomorpha indet.[85] | Currently undescribed | Upper Puesto Almendra Member | |||
| Cephalomyidae indet.[86] | Currently undescribed | Upper Puesto Almendra Member | |||
| Cephalomyopsis[78][87] | C. hipselodontus | Puesto Almendra and Trelew Members | |||
| Cephalomys[88][86][79] | C. arcidens | Upper Puesto Almendra Member |  | ||
| Changquin[89] | C. woodi | Upper Puesto Almendra Member | |||
| Chinchilloidea indet.[64] | Currently undescribed | Colhué Huapí Member | |||
| Chubutomys[85][90] | C. simpsoni
C. leucoreios |
Trelew and Upper Puesto Almendra Member | |||
| Deseadomys[85] | D. arambourgi | Puesto Almendra Member | |||
| Dudumus[91] | D. ruigomezi | Trelew Member | |||
| Draconomys[64] | D. verai | Puesto Almendra Member | |||
| Eobranisamys[64] | E sp. | Puesto Almendra Member | |||
| Eocardiidae indet.[85] | Currently undescribed | Puesto Almendra Member | |||
| Eosteiromys[64] | E. homogenidens
E. segregatus E. sp. |
Colhué Huapí and Trelew Members | |||
| Eoviscaccia[92][79][64][78] | E. australis | Colhué Huapí, Puesto Almendra, and Trelew Members | |||
| Ethelomys[78] | E. loomisi | Upper Puesto Almendra Member | |||
| Hypsosteiromys[93] | H. nectus
H. axiculus |
Colhué Huapí Member | |||
| Incamys[94][95] | I. bolivianus
I. menniorum |
Puesto Almendra Member | |||
| Leucokephalos[78] | L. zeffiae | Uppper Puesto Almendra Member | |||
| Litodontomys[78][7] | L chubtensis | Upper Puesto Almendra Member | |||
| Llitun[78] | L. notuca | Upper Puesto Almendra Member | |||
| Loncolicu[78] | L. tretos | Upper Puesto Almendra Member | |||
| Luantus[64][90][46] | L. initialis
L. minor L. propheticus L. sp. |
Colhué Huapí and Trelew Members | |||
| Neoepiblemidae indet.[43] | Currently undescribed | Colhué Huapí Member | |||
| Neoreomys[64] | N. pinturensis | Colhué Huapí Member |  | ||
| Paradelphomys[96] | P. fissus | Colhué Huapí Member | |||
| Parasteiromys | P. friantae
P. uniformis |
Colhué Huapí Member | |||
| Perimys[64] | P. incavatus
P. transversus P. dissimilis P. sp. |
Colhué Huapí and Trelew Members |  | ||
| Platypittamys[97] | P. brachyodon | Upper Puesto Almendra Member | |||
| Prospaniomys[98][99] | P. priscus
P. sp. |
Colhué Huapí and Trelew Members | |||
| Prostichomys[46] | P. bowni | Colhué Huapí Member | |||
| Protacaremys[64][78] | P. adilos
P. avunculus P. prior P. pulchellus P. sp. |
Colhué Huapí and Upper Puesto Almendra Members | |||
| Protadelphomys[64] | P. latus
P. sp. |
Colhué Huapí and Trelew Members | |||
| Saremmys[100] | S. ligcura | Colhué Huapí and Trelew Member | |||
| Scotamys[7] | S. antiquus | Upper Puesto Almendra Member | |||
| Soriamys[64] | S. gaimanensis
S. ganganensis S. sp. |
Colhué Huapí and Trelew Members | |||
| Willidewu[101] | W. estaparius | Trelew Member | |||
| Vallehermosomys[64] | V mazzonii | Upper Puesto Almendra Member | |||
| Xylechimys[96] | X. obliquus | Upper Puesto Almendra Member | |||
Primates
| Name | Species | Member/Locality | Material | Notes | Image |
|---|---|---|---|---|---|
| Dolichocebus[102] | D. gaimanensis | Trelew Member |  | ||
| Homunculus[103] | H. sp. | Colhué Huapí Member |  | ||
| Mazzonicebus[103][104] | M. almendrae | Colhué Huapí Member | |||
| Tremacebus[105] | T. harringtoni | Colhué Huapí Member |  | ||
Bats
| Name | Species | Member/Locality | Material | Notes | Image |
|---|---|---|---|---|---|
| Mormopterus | M. barrancae
M. sp. |
Colhué Huapí Member | |||
| Phyllostominae indet. | Currently undescribed | Colhué Huapí Member | |||
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{{cite journal}}: Cite journal requires|journal=(help) - Busker, Felipe; Pérez, María Encarnación; Krause, Javier Marcelo; Vucetich, María Guiomar (2017-11-27). "First record of Banderomys leanzai Kramarz, 2005 (Rodentia, Caviomorpha) in Chubut Province, Patagonia (Argentina)". Revista del Museo Argentino de Ciencias Naturales. Nueva Serie. 19 (2): 121–129. ISSN 1853-0400.
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