Barranca south of Lago Colhue-Huapi, Gran Barranca (Eocene of Argentina)
Where: Chubut, Argentina (45.7° S, 68.7° W: paleocoordinates 48.0° S, 59.3° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Barrancan mammal zone, Sarmiento Formation, Bartonian (41.3 - 38.0 Ma)
• Lowest fossil horizon, Casamayor Formation - now referred to as Sarmiento Formation
•Initially referred to the Casamayoran SALMA, which was later subdivided. Now considered type sequence for Barrancan SALMA (see Woodburne et al. 2014)
• bed-level stratigraphic resolution
Environment/lithology: terrestrial; claystone
• Bentonite and tuffs
Size classes: macrofossils, mesofossils
Collected by C. Ameghino, C. S. Williams, H. Herrera, W. Stein, Scarritt Expedition, G. F. Sternberg, L. G. Marshall, O. Gutierrez; reposited in the AMNH, FMNH
Primary reference: F. Ameghino. 1897. Mammiféres crétacés de l’Argentine (Deuxième contribution à la connaissance de la fauna mammalogique de couches à Pyrotherium) [Cretaceous mammals of Argentina (second contribution to the knowledge of the mammalian fauna of the Pyrotherium Beds)]. Boletin Instituto Geografico Argentino 18(4–9):406-521 [M. Uhen/M. Uhen/M. Carrano]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 13779: authorized by John Alroy, entered by Jill Wertheim on 25.04.2002, edited by Richard Butler, Jelle Zijlstra, Terri Cleary, Grace Varnham, Miranta Kouvari, Franco Aspromonte and Matthew Carrano
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Actinopteri | |
Pappichthys patagonica n. gen. n. sp.5
Pappichthys patagonica n. gen. n. sp.5 bowfin MACN A-11263, anterior part of a left dentary (holotype). MACN A-11592, abdominal and caudal centra, and an indeterminate bone scrap
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| Reptilia | |
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? Madtsoia sp.1 Simpson 1933 snake MACN-A 10879a, MACN-A 10879b, MACN-A 10888, three fragments of trunk vertebrae's centra; MACN-A 10892a, centrum fragment with right prezyg. of a trunk vertebra; MACN-A 10892b, centrum fragment with left prezyg. of a trunk vertebra; MACN-A 10873a and 10873b, fragments of a trunk vertebrae.
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| Mammalia | |
"Dimerostephanos colhuehuapensis n. sp." = Isotemnus colhuehuapiensis3, "Isotemnus primitivus" = Isotemnus primitivus16, "Amphitemnus transitorius n. sp." = Isotemnus primitivus4, "Trimerostephanos angustus n. sp." = Isotemnus primitivus, "Isotemnus conspiquus n. sp." = Isotemnus primitivus, "Amphitemnus nucleatus n. sp." = Isotemnus primitivus4, "Pleurostylodon modicus" = Pleurostylodon modicus15, "Tychostylops marculus n. sp." = Pleurostylodon modicus2, "Anchistrum sulcosum n. sp." = Pleurostylodon modicus2, "Paratemnus geminatus n. sp." = Pleurostylodon modicus4, "Dimerostephanos attritus n. sp." = Pleurostylodon modicus3, "Pleurostylodon divisus n. sp." = Pleurostylodon modicus2, "Trimerostephanos biconus n. sp." = Pleurostylodon modicus, "Tychostylops simus n. sp." = Pleurostylodon similis4, "Porotemnus crassiramis n. sp." = Pleurostylodon crassiramis3, Thomashuxleya rostrata15, "Plexotemnus complicatissimus n. sp." = Acoelohyrax complicatissimus4, Anisotemnus distentus15, Coelostylodon florentinoameghinoi n. gen. n. sp.17, Coelostylodon caroloameghinoi n. sp.17
"Dimerostephanos colhuehuapensis n. sp." = Isotemnus colhuehuapiensis3 Ameghino 1902 notoungulate MACN 10604, dentary p4-m3 (lectotype)
"Amphitemnus transitorius n. sp." = Isotemnus primitivus4 Ameghino 1897 notoungulate MACN 10623, m2-3
"Trimerostephanos angustus n. sp." = Isotemnus primitivus Ameghino 1897 notoungulate MACN 10593, dentary p2-m2
"Isotemnus conspiquus n. sp." = Isotemnus primitivus Ameghino 1897 notoungulate MACN 10583, maxilla M1-2 (lectotype), left dentary m2-3
"Amphitemnus nucleatus n. sp." = Isotemnus primitivus4 Ameghino 1897 notoungulate MACN 10619, broken left m3
"Pleurostylodon modicus" = Pleurostylodon modicus15 Ameghino 1897 notoungulate Types of synonyms, and: MACN 10554, almost complete lower jaw; AMNH 28878, partial skull; AMNH 28644, left P1-m3 and right M1-3; AMNH 28763, dentary p4-m2; AMNH 28630, dentary p2-m3; AMNH 28689, dentary p3-m3; AMNH 28717, jaws with right P3-m3, right p1-2, left p1-4; AMNH 28709, m1-3; AMNH 28948, dentary p3-m3; AMNH 28880, partial skull; AMNH 28646, partial skull; CNHM P13528, skull; CNHM P13296, partial skull; CNHM P13309, partial skull; CNHM P13620, maxilla with dP2-4, M1-3, P2-4
"Tychostylops marculus n. sp." = Pleurostylodon modicus2 Ameghino 1897 notoungulate MACN 10625, left M3, type
"Anchistrum sulcosum n. sp." = Pleurostylodon modicus2 Ameghino 1897 notoungulate MACN 10767, maxilla dP2-4, M1
"Paratemnus geminatus n. sp." = Pleurostylodon modicus4 Ameghino 1897 notoungulate MACN 10606, maxilla P1-M2
"Dimerostephanos attritus n. sp." = Pleurostylodon modicus3 Ameghino 1897 notoungulate MACN 10609, dentary with parts of m2-3
"Pleurostylodon divisus n. sp." = Pleurostylodon modicus2 Ameghino 1897 notoungulate MACN 10567, broken M?2 (lectotype), three premolars
"Trimerostephanos biconus n. sp." = Pleurostylodon modicus Ameghino 1897 notoungulate MACN 10548, dentary m1-2 (lectotype), edentulous dentary, m2, astragalus, calcaneum
"Tychostylops simus n. sp." = Pleurostylodon similis4 Ameghino 1901 notoungulate MACN 10607, right P4 and M2-3, left P4, M1, M3
"Porotemnus crassiramis n. sp." = Pleurostylodon crassiramis3 Ameghino 1902 notoungulate MACN 10610, dentary with p4 (lectotype), possibly associated m1 and p3, and another lower premolar
Thomashuxleya rostrata15 Ameghino 1901 notoungulate MACN 10542, M1-3; AMNH 28692, lower jaws; AMNH 28764, dentary p4
"Plexotemnus complicatissimus n. sp." = Acoelohyrax complicatissimus4 Ameghino 1904 notoungulate MACN A55-1, upper and lower jaw fragments apparently of the same individual (type)
Anisotemnus distentus15 Ameghino 1901 notoungulate AMNH 28696, mandible with right i2-m3 and left p3-m2; AMNH 29389, dentary p3-m3
Coelostylodon caroloameghinoi n. sp.17 Simpson 1970 notoungulate MACN 10753, partial skull with right C, P2-M3; left I1-3, C, P2-M3 (neotype)
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"Archaeopithecus rogeri n. gen. n. sp." = Archaeopithecus rogeri, "Adpithecus plenus n. sp." = Archaeopithecus rogeri3, "Notopithecus fossulatus n. sp." = Archaeopithecus rogeri
"Archaeopithecus rogeri n. gen. n. sp." = Archaeopithecus rogeri Ameghino 1897 notoungulate MACN 10816, maxilla P1-M2
"Adpithecus plenus n. sp." = Archaeopithecus rogeri3 Ameghino 1897 notoungulate MACN 10851, partial M1 and complete M2
"Notopithecus fossulatus n. sp." = Archaeopithecus rogeri Ameghino 1897 notoungulate MACN 10824, dentary p3-4 (lectotype); unassociated dentary with p4-m1; P?2
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"Oldfieldthomasia parvidens n. sp." = Oldfieldthomasia parvidens2, "Oldfieldthomasia pulchella n. sp." = Oldfieldthomasia parvidens2, "Oldfieldthomasia debilitata" = Oldfieldthomasia debilitata15, "Oldfieldthomasia plicata n. sp." = Oldfieldthomasia debilitata4, "Oldfieldthomasia cuneata n. sp." = Oldfieldthomasia debilitata2, "Oldfieldthomasia cingulata n. sp." = Oldfieldthomasia debilitata2, "Oldfieldthomasia transversa n. sp." = Oldfieldthomasia debilitata2, "Oldfieldthomasia conifera n. sp." = Oldfieldthomasia debilitata2, "Antepithecus innexus n. sp." = Oldfieldthomasia debilitata4, "Oldfieldthomasia furcata n. sp." = Oldfieldthomasia debilitata2, "Eostylops obliquatus n. sp." = Maxschlosseria praeterita2, Ultrapithecus rutilans n. gen. n. sp.2, Paginula parca8
"Oldfieldthomasia parvidens n. sp." = Oldfieldthomasia parvidens2 Ameghino 1901 notoungulate MACN 10763, right P4-M2 (type) and three isolated upper cheek teeth; MHN Tournouër 21, partial skull
"Oldfieldthomasia pulchella n. sp." = Oldfieldthomasia parvidens2 Ameghino 1901 notoungulate MACN 10756, maxilla fragment with dP3-4 and M1
"Oldfieldthomasia debilitata" = Oldfieldthomasia debilitata15 Ameghino 1901 notoungulate Types of synonyms; and: MACN 10765, partial skull; MACN 10761, P4-M3; MACN 10749, four dentary fragments; MACN 10750, three dentary fragments; AMNH 28680, associated dentitions; AMNH 28780, maxila I2-P3 and endocranial cast; AMNH 28632, partial skull; AMNH 28691, partial skull; AMNH 28896, partial skull; AMNH 28730, mandible left p1-m2, right i1-c1; AMNH 28963, mandible left p3-m3, right p2-m2
"Oldfieldthomasia plicata n. sp." = Oldfieldthomasia debilitata4 Ameghino 1901 notoungulate MACN 10764, right dM4 (type or lectotype), left M2-3, broken M1
"Oldfieldthomasia cuneata n. sp." = Oldfieldthomasia debilitata2 Ameghino 1901 notoungulate MACN 10762, maxilla P1-M3
"Oldfieldthomasia cingulata n. sp." = Oldfieldthomasia debilitata2 Ameghino 1901 notoungulate MACN 10772, skull
"Oldfieldthomasia transversa n. sp." = Oldfieldthomasia debilitata2 Ameghino 1901 notoungulate MACN 10754, isolated upper teeth, probably dP4 and M1 (type)
"Oldfieldthomasia conifera n. sp." = Oldfieldthomasia debilitata2 Ameghino 1901 notoungulate MACN 10757, maxilla P4-M3
"Antepithecus innexus n. sp." = Oldfieldthomasia debilitata4 Ameghino 1901 notoungulate MACN 10839, isolated upper molar
"Oldfieldthomasia furcata n. sp." = Oldfieldthomasia debilitata2 Ameghino 1901 notoungulate MACN 10748, left maxilla with P1-M3
"Eostylops obliquatus n. sp." = Maxschlosseria praeterita2 Ameghino 1901 notoungulate MACN 10482, maxilla M2
Ultrapithecus rutilans n. gen. n. sp.2 Ameghino 1901 notoungulate MACN 10818, maxilla P1-M2 (type); AMNH 28706, palate P1-M3; AMNH 28583, palate with left dI2-dP4 and M1, right dP1-4, M1, part of M2; MHN Tournouër No. 23, maxilla P2-M3
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Transpithecus obtentus n. sp.2, "Antepithecus brachystephanus n. sp." = Antepithecus brachystephanus2, "Infrapithecus cinctus n. sp." = Antepithecus brachystephanus2, "Antepithecus interrasus n. sp." = Antepithecus brachystephanus4, "Notopithecus adapinus n. gen. n. sp." = Notopithecus adapinus, "Adpithecus secans" = Notopithecus adapinus15, "Adpithecus subtenuis n. sp." = Notopithecus adapinus3
Transpithecus obtentus n. sp.2 Ameghino 1901 notoungulate MACN-A 10833a, maxilla M1-3 (lectotype). AMNH 28791, P2-P4; AMNH 28861, dentary p2-m3; AMNH 28953, maxilla P3-M3; FMNH P14895, dentary m3; MACN-A 10824, P2; MACN-A 10833b, M2; MACN-A 10833c, M3; MACN-A 10845, P4; MPEF-PV 1284, dentary p3-m1 (from "Puesto Almendra")
"Antepithecus brachystephanus n. sp." = Antepithecus brachystephanus2 Ameghino 1901 notoungulate MACN 10841, seven isolated upper teeth (including lectotype M2), fragmentary maxilla, two fragmentary dentaries
"Infrapithecus cinctus n. sp." = Antepithecus brachystephanus2 Ameghino 1901 notoungulate MACN 10826, dentary p2-m3
"Antepithecus interrasus n. sp." = Antepithecus brachystephanus4 Ameghino 1901 notoungulate MACN 10859, maxillary P2-M2
"Notopithecus adapinus n. gen. n. sp." = Notopithecus adapinus Ameghino 1897 notoungulate Syntypes: MACN 10822, associated jaw, limb bone, and vertebra fragments; and MACN 10843, jaw fragments and isolated teeth.
"Adpithecus secans" = Notopithecus adapinus15 Ameghino 1897 notoungulate Referred specimens in Ameghino Collection.
"Adpithecus subtenuis n. sp." = Notopithecus adapinus3 Ameghino 1897 notoungulate MACN 10834, maxilla P3-M3 (lectotype), maxilla P4-M2
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Notostylops bicinctus n. sp., "Notostylops murinus n. gen. n. sp." = Notostylops murinus, "Isostylops fretus n. sp." = Notostylops murinus3, "Entelostylops completus n. sp." = Notostylops murinus2, "Notostylops chicoensis n. sp." = Notostylops murinus3, "Notostylops promurinus n. sp." = Notostylops murinus4, Catastylops deflexus n. sp.4, "Notostylops parvus n. sp." = Homalostylops parvus, "Homalostylops rigeo n. sp." = Homalostylops parvus2, "Entelostylops incolumis n. sp." = Homalostylops parvus2, "Acrostylops pungiunculus n. sp." = Homalostylops parvus2
"Notostylops murinus n. gen. n. sp." = Notostylops murinus Ameghino 1897 notoungulate MACN 10500, partial skull (paralectotype); MACN 10498, both sides of lower jaw (lectotype). Numerous referred specimens.
"Isostylops fretus n. sp." = Notostylops murinus3 Ameghino 1897 notoungulate MACN 10494, four isolated premolars
"Entelostylops completus n. sp." = Notostylops murinus2 Ameghino 1897 notoungulate MACN 10492, maxilla P4-m3
"Notostylops chicoensis n. sp." = Notostylops murinus3 Ameghino 1897 notoungulate MACN 10518, right m1-2
"Notostylops promurinus n. sp." = Notostylops murinus4 Ameghino 1897 notoungulate MACN 10507, maxilla with P3-M3, molars broken
"Notostylops parvus n. sp." = Homalostylops parvus Ameghino 1897 notoungulate MACN 10527, right p2-m3, left p3-m2; MACN 10534, left p3-m3; probably all one individual
"Homalostylops rigeo n. sp." = Homalostylops parvus2 Ameghino 1897 notoungulate MACN 10473, partial lower jaw with left p3-m3, right p3-4
"Entelostylops incolumis n. sp." = Homalostylops parvus2 Ameghino 1897 notoungulate MACN 10495, four uppre molars
"Acrostylops pungiunculus n. sp." = Homalostylops parvus2 Ameghino 1897 notoungulate MACN 10468, mandible with right i3 and p1-m2, left i2 and p3-4
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"Acoelodus" proclivus n. sp.3
"Acoelodus" proclivus n. sp.3 Ameghino 1902 notoungulate MACN 10752, isolated M1 (type), jaw fragment with p3-4
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Eohyrax praerusticus n. sp.3 Ameghino 1902 notoungulate MACN 10780, m?1. Other syntypes are not of this species.
Eohyrax isotemnoides n. sp.3 Ameghino 1904 notoungulate MACN 10776, dentary p4-m3 (type), upper molar, m3. MACN 10778, M1 or M2, m3, dentary with m3 and partial m2. AMNH 28665, dentary p1-m3. AMNH 28628, right dentary p1-m3, left p4-m2. AMNH 28844, M1-2.
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Tonostylops spissus n. gen. n. sp.3
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"Albertogaudrya unica" = Albertogaudrya unica15, "Scabellia cyclogona n. sp." = Albertogaudrya unica4, "Scabellia laticincta n. sp." = Albertogaudrya unica2, "Albertogaudrya oxygona n. sp." = Albertogaudrya unica4, "Albertogaudrya separata n. sp." = Albertogaudrya unica4, "Albertogaudrya tersa n. sp." = Albertogaudrya unica3, ? Trigonostylops duplex n. sp.2, "Trigonostylops wortmani n. gen. n. sp." = Trigonostylops wortmani, "Trigonostylops secundarius n. sp." = Trigonostylops wortmani2, "Trigonostylops columnifer n. sp." = Trigonostylops wortmani4, "Trigonostylops eximius n. sp." = Trigonostylops wortmani2, "Trigonostylops trigonus n. sp." = Trigonostylops wortmani2, "Trigonostylops hemicyclus n. sp." = Trigonostylops wortmani2, "Trigonostylops scabellum" = Trigonostylops wortmani15, "Trigonostylops coryphodontoides n. sp." = Trigonostylops wortmani4, "Trigonostylops germinalis n. sp." = Trigonostylops wortmani4, "Trigonostylops insumptus n. sp." = Trigonostylops wortmani2, "Trigonostylops minimus n. sp." = Trigonostylops wortmani2
"Scabellia cyclogona n. sp." = Albertogaudrya unica4 Ameghino 1901 placental MACN 12005, upper cheek tooth fragments
"Scabellia laticincta n. sp." = Albertogaudrya unica2 Ameghino 1901 placental MACN 12008, partial upper cheek tooth
"Albertogaudrya oxygona n. sp." = Albertogaudrya unica4 Ameghino 1901 placental MACN 12007, partial upper molar
"Albertogaudrya separata n. sp." = Albertogaudrya unica4 Ameghino 1901 placental MACN 12004, upper molar
"Albertogaudrya tersa n. sp." = Albertogaudrya unica3 Ameghino 1901 placental MACN 16033, upper canine; MACN 12012, incisor. Type apparently an upper molar, not relocated by Simpson (1967).
"Trigonostylops wortmani n. gen. n. sp." = Trigonostylops wortmani Ameghino 1897 placental MACN 10651, M?2, lectotype, P?4, m3 talonid (type series). Other specimens including AMNH 28700, skull
"Trigonostylops secundarius n. sp." = Trigonostylops wortmani2 Ameghino 1897 placental MACN 10645, upper molar (lectotype), upper molar, upper premolar
"Trigonostylops columnifer n. sp." = Trigonostylops wortmani4 Ameghino 1897 placental MACN 10638, two upper molars including the lectotype
"Trigonostylops eximius n. sp." = Trigonostylops wortmani2 Ameghino 1897 placental MACN 10650, upper molar (lectotype), two m3s, m3 talonid, m?2, m?1, C1
"Trigonostylops trigonus n. sp." = Trigonostylops wortmani2 Ameghino 1897 placental MACN 10656, broken upper molar
"Trigonostylops hemicyclus n. sp." = Trigonostylops wortmani2 Ameghino 1897 placental MACN 10659, m2, lectotype, and another m2
"Trigonostylops coryphodontoides n. sp." = Trigonostylops wortmani4 Ameghino 1897 placental MACN 10641, upper molar
"Trigonostylops germinalis n. sp." = Trigonostylops wortmani4 Ameghino 1897 placental MACN 10639, upper molar
"Trigonostylops insumptus n. sp." = Trigonostylops wortmani2 Ameghino 1897 placental MACN 10654, M?2
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Machlydotherium sp.6, "? Machlydotherium sparsus n. sp." = Machlydotherium sparsum3, "Pseudostegotherium" chubutanum n. sp.3, Utaetus deustus n. sp.3, "Anteutatus lenis" = Utaetus lenis14, "Utaetus buccatus n. sp." = Utaetus buccatus3, "Orthutaetus clavatus n. sp." = Utaetus buccatus3, "Orthutaetus crenulatus n. sp." = Utaetus buccatus3, "Posteutatus indemnis n. sp." = Utaetus buccatus3, "Posteutatus scabridus n. sp." = Utaetus buccatus3, "Posteutatus indentatus n. sp." = Utaetus buccatus3, Prostegotherium notostylopianum n. sp.3, Prostegotherium astrifer n. sp.3, Parutaetus clusus n. sp.3, Parutaetus chicoensis n. sp.3, Parutaetus signatus n. sp.3, Meteutatus percarinatus n. sp.3
"? Machlydotherium sparsus n. sp." = Machlydotherium sparsum3 Ameghino 1902 armadillo MACN 10427, two broken buckler scutes. Simpson (1948) suspects these specimens were really from the Mustersan. They were said to be from the upper part of the "Notostylopéen" (?= El Nuevo level).
"Pseudostegotherium" chubutanum n. sp.3 Ameghino 1902 armadillo MACN A-10438 (carapace osteoderms, syntype); MPEF PV 5425, 6344, 6398, 6465, 6516, 7234A, 7660B; AMNH 28745, 28851
"Anteutatus lenis" = Utaetus lenis14 Ameghino 1902 armadillo MACN 10459, five scutes. Holotype may also be from here.
"Utaetus buccatus n. sp." = Utaetus buccatus3 Ameghino 1902 armadillo AMNH 28668, neotype, 200-300 scutes; part of cephalic shield, two areas of associated buckler scutes, two areas of movable bands, connected parietals with parts of squamosals and temporals, fragments of occipitals, crushed maxilla with four teeth, both sides of lower jaw with most of the teeth, nine isolated teeth; parts of nine vertebrae; one chevron bone, several rib fragments; parts of both scapulae, one humerus and ulna, and both radii; one ilium and fragment of the other, parts of one ischium and pubis, parts of one femur and fibula, and various tarsals, metatarsals, and phalanges. Original holotype was MACN 10457, 18 scutes, metacarpal, and calcaneum, locality uncertain.
"Posteutatus indentatus n. sp." = Utaetus buccatus3 Ameghino 1902 armadillo MACN 10464, three scutes
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Proectocion argentinus n. sp.4, Proectocion precisus n. sp.4, "Lambdaconus porcus n. sp." = Paulogervaisia porca2, "Lambdaconus mamma n. sp." = Paulogervaisia mamma2, Paulogervaisia inusta n. sp.2, Ernestokokenia nitida14, "Didolodus multicuspis" = Didolodus multicuspis14, "Didolodus colligatus n. sp." = Didolodus multicuspis3, "Lonchoconus lanceolatus n. gen. n. sp." = Didolodus multicuspis2, Didolodus minor9
"Lambdaconus porcus n. sp." = Paulogervaisia porca2 Ameghino 1901 placental MACN 10721, maxilla fragment with broken M2 and complete M3
"Lambdaconus mamma n. sp." = Paulogervaisia mamma2 Ameghino 1901 placental MACN 10719: fragmentary mandible p3-m2; maxilla with broken M2-3; broken M2; other fragments. Simpson (1948:107) selected the maxilla as the lectotype and doubted the referral of the other fragments.
Paulogervaisia inusta n. sp.2 Ameghino 1901 placental MACN 10664, right m3, type of Paulogervaisia inusta; MACN 10719, right jaw fragment with p3-m2 and maxillary fragment with M2-3 and isolated right M2, type of Lambdaconus mamma; MPEF 7621, isolated right m2.
"Didolodus multicuspis" = Didolodus multicuspis14 Ameghino 1897 placental MACN 10720, mandible with m3 and possibly associated isolated M1 and C; MACN 10738, right P1 and left P2; MACN 10729, left M2; AMNH 28475, mandible p4, m2-3; AMNH 2878, M3; AMNH 28774, p4. Additional specimens are types of synonyms.
"Didolodus colligatus n. sp." = Didolodus multicuspis3 Ameghino 1897 placental MACN 10736, right and left m2, left p3-4
"Lonchoconus lanceolatus n. gen. n. sp." = Didolodus multicuspis2 Ameghino 1897 placental MACN 10730, left M1
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Anisolambda fissidens8, Josepholeidya deculca n. sp.2, Guilielmofloweria plicata n. gen. n. sp.2, Ricardolydekkeria praerupta n. sp.2, Ricardolydekkeria profunda n. sp.2
Guilielmofloweria plicata n. gen. n. sp.2 Ameghino 1901 placental MACN 10703, left upper cheek tooth (type)
Ricardolydekkeria profunda n. sp.2 Ameghino 1901 placental MACN 10706, partial right upper cheek tooth (lectotype); two fragments of upper teeth and two of lower molars.
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Rutimeyeria conulifera n. gen. n. sp.2
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Polydolopidae "gen. et sp. indet. 1"7, "Eudolops tetragonus n. gen. n. sp." = Eudolops tetragonus, "Propolymastodon caroliameghinoi n. gen. n. sp." = Eudolops tetragonus11, "Promysops acuminatus n. gen. n. sp." = Eudolops tetragonus3, "Propolymastodon cardatus n. sp." = Eudolops tetragonus11, Amphidolops serrula n. gen. n. sp.3, Pseudolops princeps n. gen. n. sp.3, "Polydolops serra" = Polydolops serra14, "Anissodolops serrifer n. gen. n. sp." = Polydolops serra3, Pliodolops primulus n. gen. n. sp.3, "Polydolops thomasi n. gen. n. sp." = Polydolops thomasi, "Polydolops fur n. sp." = Polydolops thomasi3, "Polydolops simplex n. sp." = Polydolops thomasi4, Polydolops crassus n. sp.3
Polydolopidae "gen. et sp. indet. 1"7 Ameghino 1897 metatherian MLP 77-VI-14–5, a right maxillary fragment with P2-M2 (Fig. 10A); AMNH 28437, an isolated left M3
"Eudolops tetragonus n. gen. n. sp." = Eudolops tetragonus Ameghino 1897 metatherian MACN 10358, an isolated right M1 missing posterolabial corner (holotype). AMNH 28437, MACN 10340b, MLP 77-VI-14-5
"Propolymastodon caroliameghinoi n. gen. n. sp." = Eudolops tetragonus11 Ameghino 1897 metatherian MACN 10334, greater part of a left mandibular ramus with P3-M3 complete and an isolated right C
"Promysops acuminatus n. gen. n. sp." = Eudolops tetragonus3 Ameghino 1897 metatherian MACN 10340a, anterior part of an edentulous right mandibular ramus with alveoli of two small incisors and C, part of diastema and alveoli of P8, and anterior alveolus of M1
"Propolymastodon cardatus n. sp." = Eudolops tetragonus11 Ameghino 1897 metatherian MACN 10333, part of a left mandibular ramus with M1-2
Amphidolops serrula n. gen. n. sp.3 Ameghino 1902 metatherian MACN 10357, an isolated left M2 (holotype). AMNH 28438
Pseudolops princeps n. gen. n. sp.3 Ameghino 1902 metatherian MACN 10332a, an isolated left P3 (holotype). MACN 10332b-g
"Polydolops serra" = Polydolops serra14 Ameghino 1902 metatherian MACN 10361, mandible m2-3; MACN 10363, mandible m4 and partial m3
"Polydolops thomasi n. gen. n. sp." = Polydolops thomasi Ameghino 1897 metatherian MACN 10338 (lectotype). AC 3171, AMNH 28434, 28440, 28449, FMNH P14717, MACN 10332 (c, e-g), 18469, 18472, MLP 77-VI-13-9, 77-VI-14-7, 77-VI-14-8, MNHN No. 3. From Simpson (1948:59): AMNH 28434 is the holotype of _Polydolops thomasi paahi_. Referred specimens of _P. t. paahi_: CNHM P14717, AMNH 28443, AMNH 28934
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Rosendolops primigenium n. gen. n. sp.10
Rosendolops primigenium n. gen. n. sp.10 Goin and Candela 1996 metatherian MLP 77-VI-14-3, ?M2, holotype
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Coona gaudryi n. sp.15
Coona gaudryi n. sp.15 Simpson 1964 marsupial MNHN, Tournouër Collection No. 1, two lower jaw fragments, one with right m1-3 one with left p4 and m2
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Caroloameghinia mater14 Ameghino 1901 marsupial MACN 10348, mandible with p2-3 m1-4, neotype of Simpson (1948), withdrawn by Simpson (1967) after the original holotype was relocated. AMNH 28441a and b, isolated upper molars.
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Progarzonia notostylopense n. gen. n. sp.4
Progarzonia notostylopense n. gen. n. sp.4 Ameghino 1904 marsupial MACN A55-14, left dentary fragment with premolar. Simpson (1948) could not relocate it in the Ameghino Collection, but Simpson (1967) recorded that it was found again.
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Ideodelphys microscopicus n. gen. n. sp.3
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"Arminiheringia ? auceta" = Arminiheringia auceta8, "Arminiheringia cultrata n. sp." = Arminiheringia auceta3, "Arminiheringia contigua n. sp." = Arminiheringia auceta4, "Dilestes dilobus n. gen. n. sp." = Arminiheringia auceta3
"Arminiheringia cultrata n. sp." = Arminiheringia auceta3 Ameghino 1902 metatherian MACN 10329, isolated M3
"Arminiheringia contigua n. sp." = Arminiheringia auceta4 Ameghino 1902 metatherian MACN 10317, symphysis with right c-m1
"Dilestes dilobus n. gen. n. sp." = Arminiheringia auceta3 Ameghino 1902 metatherian MACN 10324, a complete lower molar, a broken one, and a fragment (syntypes)
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Angelocabrerus daptes n. gen. n. sp.17
Angelocabrerus daptes n. gen. n. sp.17 Simpson 1970 metatherian MMP 967M, dentary m2-4 and isolated teeth. "Surface find high in the beds", perhaps post-Casamayoran.
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Proplanodus adnepos n. gen. n. sp.3
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1Albino 1993; 2Ameghino 1901; 3Ameghino 1902; 4Ameghino 1904; 5Ameghino 1906; 6Carlini et al. 2005; 7Chornogubsky 2020; 8Cifelli 1985; 9Gelfo 2010; 10Goin and Candela 1996; 11Marshall 1982; 12Simpson 1932; 13Simpson 1935; 14Simpson 1948; 15Simpson 1967; 16Simpson 1967; 17Simpson 1970