Lago Musters: Mustersan, Argentina
collected by Roth 1900

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Astrapotheria - Trigonostylopidae
Staurodon gegenbauri n. gen., n. sp. Roth 1899
Simpson 1967 1 specimen
nomen dubium belonging to Trigonostylops
MLP 12-1736, mandible with left p4-m3 and both canines
Staurodon supernus n. sp. Roth 1899
Simpson 1967 2 specimens
nomen dubium belonging to Trigonostylopidae
MLP 12-2223, canine (and other teeth not conspecific); lectotype m3 not relocated in MLP by Simpson (1967)
Mammalia - Astrapotheria - Astrapotheriidae
Helicolophodon giganteus n. gen., n. sp. Roth 1904
Roth 1904
synonym of Parastrapotherium holmbergi
Notamynus holdichi n. gen., n. sp. Roth 1904
Roth 1904 4 specimens
recombined as Astraponotus holdichi
MLP 12-1471, two upper molars (including lectotype) and two lowers (see also ref 10312)
Megalophodon thompsoni n. gen., n. sp. Roth 1904
Roth 1904 1 specimen
recombined as Astraponotus thompsoni
MLP 12-2181, upper molar (see also ref 10312)
Notamynus dicksoni n. sp. Roth 1904
Roth 1904 1 specimen
recombined as Astraponotus dicksoni
MLP 12-2217, upper molar (see also ref 10312)
Megalophodon dilatatus n. sp. Roth 1904
Roth 1904 1 specimen
recombined as Astraponotus dilatatus
MLP 12-2182, upper molar (see also ref 10312)
Mammalia - Astrapotheria
Grypolophodon morenoi n. gen., n. sp. Roth 1904
Roth 1904 1 specimen
nomen vanum belonging to Astrapotheria
MLP 12-1472, upper premolar (see also ref 10312)
Grypolophodon imperfectus n. sp. Roth 1904
Simpson 1967 1 specimen
MLP 12-1460, upper tooth
Notorhinus haroldi n. gen., n. sp. Roth 1904
Roth 1904 1 specimen
nomen vanum belonging to Astrapotheria
Upper molar, not relocated by Simpson (1967) (see also ref 10312)
Notorhinus denticulatus n. sp. Roth 1904
Roth 1904 1 specimen
Upper molar, not relocated by Simpson (1967)
Blastoconus robertsoni n. gen., n. sp. Roth 1904
Roth 1904 1 specimen
nomen dubium belonging to Astrapotheria
MLP 12-2207, upper premolar; three other doubtfully referred teeth (see also ref 10312)
Grypolophodon tuberculosis n. sp. Roth 1904
Roth 1904 1 specimen
nomen vanum belonging to Astrapotheria
MLP 12-2180, partial upper premolar (see also ref 10312)
Mammalia - Notoungulata - Notostylopidae
Otronia muehlbergi n. gen., n. sp. Roth 1902
Simpson 1948 3 specimens
MLP 12-1731, dentary with i2, p4, m2-3, probable type; MLP 12-1730, partial skull; MLP 12-2283, premaxilla with I1-3
Mammalia - Notoungulata
Heterolophodon ampliatus n. gen., n. sp. Roth 1904
Roth 1904 1 specimen
MLP 12-2194, upper molar (see also ref 10312)
Degonia sympathica n. sp. Roth 1902
Simpson 1967 1 specimen
nomen dubium belonging to Notoungulata
Type not relocated by Simpson (1967), but said to be an upper molar
Ortholophodon prolongus n. gen., n. sp. Roth 1902
Simpson 1967 1 specimen
nomen dubium belonging to Notoungulata
MLP 12-2205, lower premolar
Mammalia - Notoungulata - Archaeohyracidae
Pseudhyrax eutrachytheroides Ameghino 1901
Simpson 1967 7 specimens
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
Pseudopithecus modestus n. gen., n. sp. Roth 1902
Simpson 1967 1 specimen
synonym of Pseudhyrax eutrachytheroides
MLP 12-2200, maxilla with ?dP2-4
Rankelia elegans n. gen., n. sp. Roth 1902
Simpson 1967 1 specimen
synonym of Pseudhyrax eutrachytheroides
MLP 12-2286, M?2
Degonia kollmanni n. gen., n. sp. Roth 1902
Simpson 1967 1 specimen
synonym of Pseudhyrax eutrachytheroides
MLP 12-2199, three upper molars
Pseudhyrax strangulatus (Ameghino 1901)
Simpson 1967 1 specimen
MLP 12-2198, dentary p4-m3
Mammalia - Notoungulata
Calodontotherium palmeri n. sp. Roth 1904
Roth 1904 1 specimen
recombined as Periphragnis palmeri
MLP 12-1737, maxilla M1-2, type (see also ref 10312)
Periphragnis cristatus n. sp. Roth 1904
Roth 1904 2 specimens
synonym of Periphragnis palmeri
MLP 12-1705, maxilla P2-M1 and dentary p3-m3 (lectotype) (see also ref 10312)
Periphragnis harmeri n. gen., n. sp. Roth 1899
Simpson 1967 1 specimen
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
Thomashuxleya rankei n. sp. Roth 1902
Simpson 1967 1 specimen
synonym of Periphragnis harmeri
MLP 12-1715, lower jaw
Lemudeus angustidens n. gen., n. sp. Roth 1904
Roth 1904 1 specimen
synonym of Periphragnis harmeri
MLP 12-2208, P4 (see also ref 10312)
Calodontotherium varietatum n. sp. Roth 1904
Roth 1904 1 specimen
synonym of Periphragnis harmeri
MLP 12-2197, maxillary fragments with P3-4 and M1-2 (see also ref 10312)
Tehuelia regia n. gen., n. sp. Roth 1902
Simpson 1967 1 specimen
synonym of Periphragnis harmeri
MLP 12-1771, partial skull, and lower jaw with right c-m2 and left c, p3-m3
Mammalia - Notoungulata - Isotemnidae
Eurystephanodon crassatus n. sp. Roth 1903
Simpson 1967 1 specimen
nomen dubium belonging to Isotemnidae
MLP 12-1600, broken upper molar
Trigonolophodon modicus n. sp. Roth 1904
Roth 1904 1 specimen
nomen dubium belonging to Isotemnidae
MLP 12-2190, upper molar (see also ref 10312)
Stylophorus alouatinus n. gen., n. sp. Roth 1902
Simpson 1967 1 specimen
recombined as Distylophorus alouatinus
MLP 12-2210, right lower dentition, probable type (see Simpson 1967:175).
Rhyphodon lankesteri n. gen., n. sp. Roth 1899
Simpson 1967 7 specimens
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. Roth 1902
Simpson 1967 1 specimen
synonym of Rhyphodon lankesteri
MLP 12-2186, palate and part of skull
Pehuenia insigna n. sp. Roth 1904
Roth 1904 1 specimen
synonym of Rhyphodon lankesteri
MLP 12-1575, skull fragment (see also ref 10312)
Lemudeus proportionalis n. sp. Roth 1904
Roth 1904 1 specimen
synonym of Rhyphodon lankesteri
MLP 12-2212, P3 (see also ref 10312)
Setebos terribilis n. gen., n. sp. Roth 1902
Simpson 1967 1 specimen
synonym of Rhyphodon lankesteri
MLP 12-1744, skull
Colhuapia rosei n. gen., n. sp. Roth 1902
Simpson 1967 2 specimens
nomen dubium belonging to Isotemnidae
MLP 12-2221, ?dP3; MLP 12-2222, ?dP4
Lafkenia sulcifera n. gen., n. sp. Roth 1902
Simpson 1967 1 specimen
nomen dubium belonging to Isotemnidae
MLP 12-1461, probably a deciduous upper tooth
Colhuelia fruhi n. gen., n. sp. Roth 1902
Simpson 1967 3 specimens
nomen dubium belonging to Isotemnidae
MLP 12-2216, ?dP2; MLP 2215, right upper tooth; MLP 12-2214, left upper tooth
Lafkenia schmidti n. sp. Roth 1902
Simpson 1967 1 specimen
nomen dubium belonging to Isotemnidae
MLP 12-2188, maxilla fragment with probably dP2-3 or dP3-4
Pehuenia magna n. sp. Roth 1904
Roth 1904 1 specimen
nomen dubium belonging to Isotemnidae
MLP 12-2189, upper molar (see also ref 10312)
Mammalia - Notoungulata - Notohippidae
Puelia plicata n. gen., n. sp. Roth 1902
Simpson 1967 3 specimens
MLP 12-1536, maxilla C-P1, type; MLP 12-1534, maxilla P1-M3; MLP 12-1533, maxilla P2-M1
Mammalia - Notoungulata
Notopithecinae indet. (Ameghino 1897)
Simpson 1967 2 specimens
spelled with current rank as Notopithecidae
? Notopithecus amplidens or Guilielmoscottia plicifera. MLP 12-2279, dentary p3-m3; MLP 12-2288, dentary p4-m3.
Guilielmoscottia plicifera Ameghino 1901
Simpson 1967 1 specimen
MLP 12-2183, upper molar
? Notopithecus amplidens (Ameghino 1901)
Simpson 1967 2 specimens
synonym of Guilielmoscottia plicifera
MLP 12-2183, M1; MLP 12-2281, right upper teeth, probably P2-M1
Mammalia - Panameriungulata
Lambdaconus elegans n. sp. Roth 1904
Roth 1904 1 specimen
nomen dubium belonging to Litopterna
Type lost. "A mandible of a young animal changing its milk teeth" (ref 10369).
Mammalia - Panameriungulata - Macraucheniidae
Megacrodon planus n. gen., n. sp. Roth 1899
Simpson 1948 1 specimen
recombined as Polymorphis planus
MLP 12-1732, symphysis and nearly complete right ramus with crown of m3
Polymorphis lechei n. gen., n. sp. Roth 1899
Simpson 1948 1 specimen
MLP 12-2168, left lower jaw and symphysis with left i1-m3 and right i1-3
Mammalia - Panameriungulata
Proacrodon transformatus n. gen., n. sp. Roth 1899
Simpson 1948 1 specimen
nomen vanum belonging to Litopterna
Type lost. A single lower cheek tooth.
Mammalia - Panameriungulata - Proterotheriidae
Megacrodon prolixus n. sp. Roth 1899
Simpson 1948 1 specimen
recombined as Xesmodon prolixus
MLP 12-1743, lower jaw with p3-4
Heteroglyphis dewoletzky n. gen., n. sp. Roth 1899
Simpson 1948 1 specimen
MLP 12-1462, broken upper molar
Polyacrodon lanciformis n. sp. Roth 1899
Simpson 1948 1 specimen
MLP 12-2170, left upper molar
Polyacrodon ligatus n. gen., n. sp. Roth 1899
Simpson 1948 1 specimen
MLP 12-2169, right upper molar
Mammalia - Cingulata - Dasypodidae
Meteutatus rigidus Ameghino 1902
Simpson 1948 1 specimen
recombined as Barrancatatus rigidus
MLP, Roth collection (Simpson 1948:78)
Pseudeutatus depictus (Ameghino 1902)
Simpson 1948 1 specimen
MLP, Roth collection (Simpson 1948:92)
Mammalia - Sparassodonta
Plesiofelis schlosseri n. gen., n. sp. Roth 1904
Roth 1904 1 specimen
MLP 11-114, mandible p2-m4, holotype (see also ref 10369)
Plesiofelis cretaceus n. sp. Roth 1904
Roth 1904 1 specimen
synonym of Plesiofelis schlosseri
MLP, Roth Collection, part of left mandible with m4, holotype (see also ref 10369)
Mammalia
Isolophodon aplanatus n. sp. Roth 1904
Roth 1904 1 specimen
nomen vanum belonging to Mammalia
MLP 12-2193, lower molar (see also ref 10312)
Trilobodon brancoi n. gen., n. sp. Roth 1902
Simpson 1967 1 specimen
MLP 12-1465, incisor
Eutrochodon inceptus n. gen., n. sp. Roth 1904
Roth 1904 1 specimen
MLP, uncatalogued, isolated tooth (see also ref 10312)
Prostylophorus margeriei n. gen., n. sp. Roth 1902
Simpson 1967 1 specimen
nomen dubium belonging to Mammalia
MLP 12-2211, incisor
see common names

Geography
Country:Argentina State/province:Chubut
Coordinates: 45.2° South, 68.8° West (view map)
Paleocoordinates:47.7° South, 59.0° West
Basis of coordinate:estimated from map
Geographic resolution:local area
Time
Period:Paleogene Epoch:Eocene
10 m.y. bin:Cenozoic 2
Key time interval:Mustersan Zone: Mustersan
Age range of interval:47.90000 - 41.90000 m.y. ago
Stratigraphy
Stratigraphy comments: Mustersan SALMA, Late Eocene (Woodburne et al. 2014) (and not Cretaceous as thought by Roth)
Lithology and environment
Primary lithology: not reported
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:survey of museum collection
Reason for describing collection:taxonomic analysis
Collectors:Roth Collection dates:c. 1900
Metadata
Also known as:Cretáceo superior de Lago Musters, C.S.M.
Database number:176290
Authorizer:J. Zijlstra, P. Mannion Enterer:J. Zijlstra, M. Kouvari
Modifier:M. Kouvari Research group:vertebrate
Created:2016-02-06 01:20:01 Last modified:2020-09-22 03:20:47
Access level:the public Released:2016-02-06 01:20:01
Creative Commons license:CC BY
Reference information

Primary reference:
57943. 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]

Secondary references:

73279 S. Roth. 1904. Noticias preliminares sobre nuevos mamíferos fósiles del Cretáceo superior y Terciario inferior de la Patagonia. Revista del Museo de la Plata 11:135-158 [P. Mannion/M. Kouvari]
10369 G. G. Simpson. 1948. The beginning of the age of mammals in South America. Part I. Bulletin of the American Museum of Natural History 91:1-232 [D. Croft/D. Croft/R. Butler]
10312 G. G. Simpson. 1967. The beginning of the age of mammals in South America. Part II. Bulletin of the American Museum of Natural History 137:1-260 [D. Croft/D. Croft/K. Pino]