Lago Musters (Eocene of Argentina)

Also known as Cretáceo superior de Lago Musters, C.S.M.

Where: Chubut, Argentina (45.2° S, 68.8° W: paleocoordinates 47.7° S, 59.0° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Mustersan zone, Mustersan (48.0 - 42.0 Ma)

• Mustersan SALMA, Late Eocene (Woodburne et al. 2014) (and not Cretaceous as thought by Roth)

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by Roth in c. 1900

Primary reference: G. G. Simpson. 1967. The Ameghinos' localities for early Cenozoic mammals in Patagonia. Bulletin of the Museum of Comparative Zoology 136:63-76 [J. Zijlstra/J. Zijlstra]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 176290: authorized by Jelle Zijlstra, entered by Jelle Zijlstra on 06.02.2016, edited by Miranta Kouvari

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Astrapotheria -
Grypolophodon morenoi n. gen. n. sp.1 Roth 1904 placental
MLP 12-1472, upper premolar (see also ref 10312)
Blastoconus robertsoni n. gen. n. sp.1 Roth 1904 placental
MLP 12-2207, upper premolar; three other doubtfully referred teeth (see also ref 10312)
Grypolophodon imperfectus n. sp.3 Roth 1904 placental
MLP 12-1460, upper tooth
Notorhinus denticulatus n. sp.1 Roth 1904 placental
Upper molar, not relocated by Simpson (1967)
 Astrapotheria - Trigonostylopidae
"Staurodon gegenbauri n. gen. n. sp." = Trigonostylops gegenbauri3, Staurodon supernus n. sp.3
"Staurodon gegenbauri n. gen. n. sp." = Trigonostylops gegenbauri3 Roth 1899 placental
MLP 12-1736, mandible with left p4-m3 and both canines
Staurodon supernus n. sp.3 Roth 1899 placental
MLP 12-2223, canine (and other teeth not conspecific); lectotype m3 not relocated in MLP by Simpson (1967)
 Astrapotheria -
Notorhinus haroldi n. gen. n. sp.1
Notorhinus haroldi n. gen. n. sp.1 Roth 1904 placental
Upper molar, not relocated by Simpson (1967) (see also ref 10312)
 Astrapotheria - Astrapotheriidae
"Notamynus holdichi n. gen. n. sp." = Astraponotus holdichi1, "Megalophodon thompsoni n. gen. n. sp." = Astraponotus thompsoni1, "Megalophodon dilatatus n. sp." = Astraponotus dilatatus1, "Notamynus dicksoni n. sp." = Astraponotus dicksoni1, "Helicolophodon giganteus n. gen. n. sp." = Parastrapotherium holmbergi1
"Notamynus holdichi n. gen. n. sp." = Astraponotus holdichi1 Roth 1904 placental
MLP 12-1471, two upper molars (including lectotype) and two lowers (see also ref 10312)
"Megalophodon thompsoni n. gen. n. sp." = Astraponotus thompsoni1 Roth 1904 placental
MLP 12-2181, upper molar (see also ref 10312)
"Megalophodon dilatatus n. sp." = Astraponotus dilatatus1 Roth 1904 placental
MLP 12-2182, upper molar (see also ref 10312)
"Notamynus dicksoni n. sp." = Astraponotus dicksoni1 Roth 1904 placental
MLP 12-2217, upper molar (see also ref 10312)
"Helicolophodon giganteus n. gen. n. sp." = Parastrapotherium holmbergi1 Ameghino 1894 placental
 Astrapotheria -
Grypolophodon tuberculosis n. sp.1 Roth 1904 placental
MLP 12-2180, partial upper premolar (see also ref 10312)
 Notoungulata -
Ortholophodon prolongus n. gen. n. sp.3
Ortholophodon prolongus n. gen. n. sp.3 Roth 1902 notoungulate
MLP 12-2205, lower premolar
 Notoungulata - Notostylopidae
Otronia muehlbergi n. gen. n. sp.2
Otronia muehlbergi n. gen. n. sp.2 Roth 1902 notoungulate
MLP 12-1731, dentary with i2, p4, m2-3, probable type; MLP 12-1730, partial skull; MLP 12-2283, premaxilla with I1-3
 Notoungulata - Notopithecidae
"Notopithecinae indet." = Notopithecidae3, "Guilielmoscottia plicifera" = Guilielmoscottia plicifera3, "? Notopithecus amplidens" = Guilielmoscottia plicifera3
"Notopithecinae indet." = Notopithecidae3 Ameghino 1897 notoungulate
? Notopithecus amplidens or Guilielmoscottia plicifera. MLP 12-2279, dentary p3-m3; MLP 12-2288, dentary p4-m3.
"Guilielmoscottia plicifera" = Guilielmoscottia plicifera3 Ameghino 1901 notoungulate
MLP 12-2183, upper molar
"? Notopithecus amplidens" = Guilielmoscottia plicifera3 Ameghino 1901 notoungulate
MLP 12-2183, M1; MLP 12-2281, right upper teeth, probably P2-M1
 Notoungulata -
Heterolophodon ampliatus n. gen. n. sp.1
Heterolophodon ampliatus n. gen. n. sp.1 Roth 1904 notoungulate
MLP 12-2194, upper molar (see also ref 10312)
 Notoungulata - Archaeohyracidae
Pseudhyrax strangulatus3, "Pseudhyrax eutrachytheroides" = Pseudhyrax eutrachytheroides3, "Rankelia elegans n. gen. n. sp." = Pseudhyrax eutrachytheroides3, "Degonia kollmanni n. gen. n. sp." = Pseudhyrax eutrachytheroides3, "Pseudopithecus modestus n. gen. n. sp." = Pseudhyrax eutrachytheroides3
Pseudhyrax strangulatus3 Ameghino 1901 notoungulate
MLP 12-2198, dentary p4-m3
"Pseudhyrax eutrachytheroides" = Pseudhyrax eutrachytheroides3 Ameghino 1901 notoungulate
MLP 12-1740, dentary p2-m3; MLP 12-1741, dentary m1-3; MLP 12-1590, dentary p4-m3; MLP 12-1594, dentary p2-m1; MLP 12-1591, dentary p2-m1; MLP 12-1592, dentary m1-3; MLP 12-1582, dentary p4-m3
"Rankelia elegans n. gen. n. sp." = Pseudhyrax eutrachytheroides3 Ameghino 1901 notoungulate
MLP 12-2286, M?2
"Degonia kollmanni n. gen. n. sp." = Pseudhyrax eutrachytheroides3 Ameghino 1901 notoungulate
MLP 12-2199, three upper molars
"Pseudopithecus modestus n. gen. n. sp." = Pseudhyrax eutrachytheroides3 Ameghino 1901 notoungulate
MLP 12-2200, maxilla with ?dP2-4
 Notoungulata - Isotemnidae
Lafkenia schmidti n. sp.3, Pehuenia magna n. sp.1, Colhuapia rosei n. gen. n. sp.3, Lafkenia sulcifera n. gen. n. sp.3, "Rhyphodon lankesteri n. gen. n. sp." = Rhyphodon lankesteri3, "Pehuenia wehrlii n. gen. n. sp." = Rhyphodon lankesteri3, "Pehuenia insigna n. sp." = Rhyphodon lankesteri1, "Setebos terribilis n. gen. n. sp." = Rhyphodon lankesteri3, "Lemudeus proportionalis n. sp." = Rhyphodon lankesteri1, Colhuelia fruhi n. gen. n. sp.3, Trigonolophodon modicus n. sp.1, "Stylophorus alouatinus n. gen. n. sp." = Distylophorus alouatinus3, Eurystephanodon crassatus n. sp.3
Lafkenia schmidti n. sp.3 Roth 1902 notoungulate
MLP 12-2188, maxilla fragment with probably dP2-3 or dP3-4
Pehuenia magna n. sp.1 Roth 1904 notoungulate
MLP 12-2189, upper molar (see also ref 10312)
Colhuapia rosei n. gen. n. sp.3 Roth 1902 notoungulate
MLP 12-2221, ?dP3; MLP 12-2222, ?dP4
Lafkenia sulcifera n. gen. n. sp.3 Roth 1902 notoungulate
MLP 12-1461, probably a deciduous upper tooth
"Rhyphodon lankesteri n. gen. n. sp." = Rhyphodon lankesteri3 Roth 1899 notoungulate
MLP 12-1717, partial skull (lectotype) and lower jaw; MLP 12-1718, lower jaw; MLP 12-1729, lower jaw; MLP 12-1720, lower jaw; MLP 12-1719, lower jaw; MLP 12-1721, lower jaw
"Pehuenia wehrlii n. gen. n. sp." = Rhyphodon lankesteri3 Roth 1899 notoungulate
MLP 12-2186, palate and part of skull
"Pehuenia insigna n. sp." = Rhyphodon lankesteri1 Roth 1899 notoungulate
MLP 12-1575, skull fragment (see also ref 10312)
"Setebos terribilis n. gen. n. sp." = Rhyphodon lankesteri3 Roth 1899 notoungulate
MLP 12-1744, skull
"Lemudeus proportionalis n. sp." = Rhyphodon lankesteri1 Roth 1899 notoungulate
MLP 12-2212, P3 (see also ref 10312)
Colhuelia fruhi n. gen. n. sp.3 Roth 1902 notoungulate
MLP 12-2216, ?dP2; MLP 2215, right upper tooth; MLP 12-2214, left upper tooth
Trigonolophodon modicus n. sp.1 Roth 1904 notoungulate
MLP 12-2190, upper molar (see also ref 10312)
"Stylophorus alouatinus n. gen. n. sp." = Distylophorus alouatinus3 Roth 1902 notoungulate
MLP 12-2210, right lower dentition, probable type (see Simpson 1967:175).
Eurystephanodon crassatus n. sp.3 Roth 1903 notoungulate
MLP 12-1600, broken upper molar
 Notoungulata -
"Periphragnis harmeri n. gen. n. sp." = Periphragnis harmeri3, "Tehuelia regia n. gen. n. sp." = Periphragnis harmeri3, "Calodontotherium varietatum n. sp." = Periphragnis harmeri1, "Thomashuxleya rankei n. sp." = Periphragnis harmeri3, "Lemudeus angustidens n. gen. n. sp." = Periphragnis harmeri1, "Calodontotherium palmeri n. sp." = Periphragnis palmeri1, "Periphragnis cristatus n. sp." = Periphragnis palmeri1
"Periphragnis harmeri n. gen. n. sp." = Periphragnis harmeri3 Roth 1899 notoungulate
MLP 12-1769, palate and left zygoma with left P2-M3 and right P2-M2, type; MLP 12-1708, 12-1762, 12-1759, 12-1754, 12-1753, 12-1709, 12-1745, 12-1757, 12-1716, 12-1714, 12-1712, and types of synonyms
"Tehuelia regia n. gen. n. sp." = Periphragnis harmeri3 Roth 1899 notoungulate
MLP 12-1771, partial skull, and lower jaw with right c-m2 and left c, p3-m3
"Calodontotherium varietatum n. sp." = Periphragnis harmeri1 Roth 1899 notoungulate
MLP 12-2197, maxillary fragments with P3-4 and M1-2 (see also ref 10312)
"Thomashuxleya rankei n. sp." = Periphragnis harmeri3 Roth 1899 notoungulate
MLP 12-1715, lower jaw
"Lemudeus angustidens n. gen. n. sp." = Periphragnis harmeri1 Roth 1899 notoungulate
MLP 12-2208, P4 (see also ref 10312)
"Calodontotherium palmeri n. sp." = Periphragnis palmeri1 Roth 1904 notoungulate
MLP 12-1737, maxilla M1-2, type (see also ref 10312)
"Periphragnis cristatus n. sp." = Periphragnis palmeri1 Roth 1904 notoungulate
MLP 12-1705, maxilla P2-M1 and dentary p3-m3 (lectotype) (see also ref 10312)
 Notoungulata - Notohippidae
Puelia plicata n. gen. n. sp.3
Puelia plicata n. gen. n. sp.3 Roth 1902 notoungulate
MLP 12-1536, maxilla C-P1, type; MLP 12-1534, maxilla P1-M3; MLP 12-1533, maxilla P2-M1
 Notoungulata -
Degonia sympathica n. sp.3 Roth 1902 notoungulate
Type not relocated by Simpson (1967), but said to be an upper molar
 Panameriungulata -
Proacrodon transformatus n. gen. n. sp.2
Proacrodon transformatus n. gen. n. sp.2 Roth 1899 placental
Type lost. A single lower cheek tooth.
 Panameriungulata - Macraucheniidae
Polymorphis lechei n. gen. n. sp.2, "Megacrodon planus n. gen. n. sp." = Polymorphis planus2
Polymorphis lechei n. gen. n. sp.2 Roth 1899 placental
MLP 12-2168, left lower jaw and symphysis with left i1-m3 and right i1-3
"Megacrodon planus n. gen. n. sp." = Polymorphis planus2 Roth 1899 placental
MLP 12-1732, symphysis and nearly complete right ramus with crown of m3
 Panameriungulata -
Lambdaconus elegans n. sp.1 Roth 1904 placental
Type lost. "A mandible of a young animal changing its milk teeth" (ref 10369).
 Panameriungulata - Proterotheriidae
Polyacrodon ligatus n. gen. n. sp.2, Polyacrodon lanciformis n. sp.2, "Megacrodon prolixus n. sp." = Xesmodon prolixus2, Heteroglyphis dewoletzky n. gen. n. sp.2
Polyacrodon ligatus n. gen. n. sp.2 Roth 1899 placental
MLP 12-2169, right upper molar
Polyacrodon lanciformis n. sp.2 Roth 1899 placental
MLP 12-2170, left upper molar
"Megacrodon prolixus n. sp." = Xesmodon prolixus2 Roth 1899 placental
MLP 12-1743, lower jaw with p3-4
Heteroglyphis dewoletzky n. gen. n. sp.2 Roth 1899 placental
MLP 12-1462, broken upper molar
 Cingulata - Dasypodidae
Pseudeutatus depictus2, "Meteutatus rigidus" = Barrancatatus rigidus2
Pseudeutatus depictus2 Ameghino 1902 armadillo
MLP, Roth collection (Simpson 1948:92)
"Meteutatus rigidus" = Barrancatatus rigidus2 Ameghino 1902 armadillo
MLP, Roth collection (Simpson 1948:78)
 Sparassodonta - Borhyaenidae
"Plesiofelis schlosseri n. gen. n. sp." = Plesiofelis schlosseri1, "Plesiofelis cretaceus n. sp." = Plesiofelis schlosseri1
"Plesiofelis schlosseri n. gen. n. sp." = Plesiofelis schlosseri1 Roth 1904 metatherian
MLP 11-114, mandible p2-m4, holotype (see also ref 10369)
"Plesiofelis cretaceus n. sp." = Plesiofelis schlosseri1 Roth 1904 metatherian
MLP, Roth Collection, part of left mandible with m4, holotype (see also ref 10369)
  -
Trilobodon brancoi n. gen. n. sp.3, Eutrochodon inceptus n. gen. n. sp.1, Isolophodon aplanatus n. sp.1, Prostylophorus margeriei n. gen. n. sp.3
Trilobodon brancoi n. gen. n. sp.3 Roth 1902 mammal
MLP 12-1465, incisor
Eutrochodon inceptus n. gen. n. sp.1 Roth 1904 mammal
MLP, uncatalogued, isolated tooth (see also ref 10312)
Isolophodon aplanatus n. sp.1 Roth 1904 mammal
MLP 12-2193, lower molar (see also ref 10312)
Prostylophorus margeriei n. gen. n. sp.3 Roth 1902 mammal
MLP 12-2211, incisor