Mustersan of Patagonia: Mustersan, Argentina
collected by Carlos Ameghino 1900

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Pyrotheriidae
Propyrotherium saxeum n. gen., n. sp. Ameghino 1901
Simpson 1967 1 specimen
MACN 10929, ?P4 (lectotype)
Mammalia - Notoungulata
Ultrapithecus robustus n. sp. Roth 1902
Simpson 1967
nomen dubium belonging to Notoungulata
Type not relocated by Simpson (1967), said to be "[p]resumably Mustersan"
Procolpodon foratus n. gen., n. sp. Ameghino 1904
Simpson 1967 1 specimen
nomen dubium belonging to Notoungulata
Type not relocated by Simpson (1967), left astragalus
Mammalia - Notoungulata - Archaeohyracidae
Eohyrax brachyodus n. sp. Ameghino 1902
Simpson 1967 1 specimen
nomen vanum belonging to Eohyrax
Type not relocated, probably an isolated m1
Eohyrax platyodus n. sp. Ameghino 1904
Simpson 1967 2 specimens
nomen dubium belonging to Eohyrax
MACN 10980, six teeth of which two are referable to this species: left m1 (lectotype) and left m3
Archaeohyrax sulcidens n. sp. Ameghino 1902
Simpson 1967 1 specimen
recombined as Bryanpattersonia sulcidens
MACN 1096, many isolated teeth, including left m1, lectotype
Archaeohyrax nesodontoides n. sp. Ameghino 1901
Simpson 1967 17 specimens
recombined as Bryanpattersonia nesodontoides
MACN 10905, 10 lower and 7 upper teeth, including right m1, lectotype
Eomorphippus rutilatus n. sp. Ameghino 1901
Simpson 1967 3 specimens
synonym of Bryanpattersonia nesodontoides
MACN 10915, a right upper premolar (doubtfully referable), two left, and one right (lectotype) upper molars
Pseudhyrax eutrachytheroides n. gen., n. sp. Ameghino 1901
Simpson 1967 1 specimen
MACN, uncatalogued, maxillary fragment with dP2-4, M1
Eohyrax strangulatus n. sp. Ameghino 1901
Simpson 1967 2 specimens
recombined as Pseudhyrax strangulatus
MACN 10774, dentary p4-m2, type (but not other specimens cataloged under this number); MACN 10913, dentary with partial p4 and m1-2
Trimerostephanos cuneolus n. sp. Ameghino 1901
Simpson 1967 1 specimen
synonym of Pseudhyrax strangulatus
MACN 10968, six associated lower cheek teeth and jaw fragments
Mammalia - Notoungulata - Interatheriidae
Eopachyrucos pliciformis n. gen., n. sp. Simpson 1967
Simpson 1967 1 specimen
MACN A55-12, isolated upper molar
Mammalia - Notoungulata
Eomorphippus obscurus n. gen., n. sp. Ameghino 1901
Simpson 1967 10 specimens
MACN 10917, three upper molars (including left M3, lectotype); MACN 10914, isolated teeth including 7 referable to this species. Perhaps from the "Astraponotéen plus supérieure" (=Tinguirirican) level but no concrete evidence of that for these specimens.
Pseudostylops subquadratus n. gen., n. sp. Ameghino 1901
Simpson 1967 1 specimen
synonym of Eomorphippus obscurus
MACN 10904, P?3
Proasmodeus exauctus n. sp. Ameghino 1902
Simpson 1967 2 specimens
recombined as Periphragnis exauctus
MACN 10926, mandible p2-m3 (type); doubtfully referred MACN 10928, mandible right p2-m3, left m2-3
Asmodeus armatus n. sp. Ameghino 1901
Simpson 1967 1 specimen
synonym of Periphragnis harmeri
MACN 10925, P2-M3 on both sides, lectotype. See discussion of original hypodigm by Simpson (1967).
Mammalia - Notoungulata - Isotemnidae
Trimerostephanos coalitus n. sp. Ameghino 1901
Simpson 1967 1 specimen
MACN 10964, right dentary with ?p4-m1
Trimerostephanos coarctatus n. sp. Ameghino 1901
Simpson 1967 3 specimens
MACN 10965A, dentary p4-m3, lectotype; MACN 10965B, right P2-4, M2-3, left P2-4, M2-3; MACN 10966B, M?2; other specimens under MACN 10965-10966 were referred by Ameghino but may not belong here
Trimerostephanos sigma n. sp. Ameghino 1901
Simpson 1967 2 specimens
recombined as Acoelohyrax sigma
MACN 10967, mandible m1-2, type; MACN 10969, dentary m1-3
Mammalia - Notoungulata
Notopithecinae indet. (Ameghino 1897)
Simpson 1967 1 specimen
spelled with current rank as Notopithecidae
? Notopithecus amplidens or Guilielmoscottia plicifera. MACN 10786, dentary p1-m3
Guilielmoscottia plicifera n. gen., n. sp. Ameghino 1901
Simpson 1967 1 specimen
MACN 10898, maxilla P1-M3
Adpithecus amplidens n. sp. Ameghino 1901
Simpson 1967 6 specimens
synonym of Guilielmoscottia plicifera
MACN 10895, maxilla P3-M3 (lectotype) and maxilla dP2-4, M1-2; MACN 10901, C-P2, P4-M2, m3, and upper premolar
Edvardocopeia sinuosa n. gen., n. sp. Ameghino 1901
Simpson 1967 1 specimen
nomen dubium belonging to Notoungulata
Type not relocated by Simpson (1967), but original description based on an upper premolar and a symphysis
Pseudopachyrucos foliiformis n. gen., n. sp. Ameghino 1901
Simpson 1967 3 specimens
MACN A55-11, three isolated, broken teeth, including the lectotype
Eohegetotherium priscum n. gen., n. sp. Ameghino 1901
Simpson 1967 1 specimen
nomen vanum belonging to Eohegetotherium
MACN, uncatalogued lot, isolated upper molar (lectotype)
Trimerostephanos ultimus n. sp. Ameghino 1901
Simpson 1967 1 specimen
nomen vanum belonging to Notoungulata
Type not relocated by Simpson (1967), but based on m1 and M1-3
Mammalia - Panameriungulata
Paulogervaisia celata n. sp. Ameghino 1901
1 specimen
nomen dubium belonging to Litopterna
MACN 10947, tooth
Mammalia - Panameriungulata - Macraucheniidae
Lambdaconus alius n. sp. Ameghino 1901
1 specimen
recombined as Polymorphis alius
MACN 10893, mandible with left p2-m1, right p2-m3
Mammalia - Panameriungulata - Proterotheriidae
Decaconus intricatus n. gen., n. sp. Ameghino 1901
1 specimen
synonym of Polyacrodon lanciformis
MACN 10897, right upper molar
Mammalia - Cingulata - Glyptatelidae
Lomaphorelus depstus n. gen., n. sp. Ameghino 1902
1 specimen
MACN 10950, broken scute
Glyptatelus fractus n. sp. Ameghino 1902
1 specimen
MACN 10949, scute (lectotype) and isolated tooth
Mammalia - Cingulata - Palaeopeltidae
Palaeopeltis tesseratus n. sp. Ameghino 1902
1 specimen
MACN 10948, broken fragment of shield with most of one scute and small parts of three others
Mammalia - Cingulata - Dasypodidae
Anteutatus laevus n. sp. Ameghino 1902
1 specimen
recombined as Utaetus laevus
MACN 10690, six scutes
Machlydotherium ater n. sp. Ameghino 1902
1 specimen
MACN 10952, ten scutes
Machlydotherium intortum n. sp. Ameghino 1902
1 specimen
MACN 10953, three scutes
Machlydotherium asperum n. gen., n. sp. Ameghino 1902
1 specimen
MACN 10951, 28 scutes, many broken, and one tooth
Meteutatus rigidus n. sp. Ameghino 1902
1 specimen
recombined as Barrancatatus rigidus
MACN 10958, twelve scutes
Sadypus ascendens n. sp. Ameghino 1902
1 specimen
synonym of Meteutatus
MACN 10955, one scute
Sadypus confluens n. sp. Ameghino 1902
1 specimen
MACN 10954, eight scutes
Anutaetus circundatus n. gen., n. sp. Ameghino 1902
1 specimen
recombined as Pseudeutatus circundatus
MACN 10962, one scute
Isutaetus depictus n. gen., n. sp. Ameghino 1902
1 specimen
recombined as Pseudeutatus depictus
MACN 10961, one band and two buckler scutes
Pachyzaedyus cuneiformis n. gen., n. sp. Ameghino 1902
1 specimen
recombined as Pseudeutatus cuneiformis
MACN 10956, one scute
Pseudeutatus clypeus n. gen., n. sp. Ameghino 1902
1 specimen
MACN 10959, one scute
Mammalia - Sparassodonta
Procladosictis anomala n. gen., n. sp. Ameghino 1902
1 specimen
MACN 10327, maxilla P3-M3, holotype
Mammalia
? Promysops primarius n. sp. Ameghino 1902
1 specimen
nomen vanum belonging to Marsupialia
MACN A55-10, isolated incisor, thought to be lost by Simpson (1948) but relocated by Simpson (1967).
Picunia nitida n. gen., n. sp. Roth 1902
Simpson 1967
"Probably an isolated upper molar; not found in collection"
Diplodon ampliatus n. gen., n. sp. Roth 1902
Simpson 1967 1 specimen
nomen vanum belonging to Mammalia
Isolated tooth, not relocated by Simpson (1967)
Stenogenium aenigmaticum n. sp. Ameghino 1901
Simpson 1967 1 specimen
nomen dubium belonging to Mammalia
MACN 10899, edentulous symphysis
see common names

Geography
Country:Argentina State/province:Chubut
Coordinates: 45.7° South, 68.7° West (view map)
Paleocoordinates:48.1° South, 58.8° West
Basis of coordinate:based on political unit
Geographic resolution:basin
Time
Period:Paleogene Epoch:Eocene
10 m.y. bin:Cenozoic 2
Key time interval:Mustersan Mammal zone: Mustersan
Age range of interval:47.90000 - 41.90000 m.y. ago
Stratigraphy
Stratigraphic resolution:bed
Stratigraphy comments: Mustersan SALMA, Late Eocene (Woodburne et al. 2014).
Lithology and environment
Primary lithology: not reported
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Collection methods:survey of museum collection
Reason for describing collection:taxonomic analysis
Collectors:Carlos Ameghino Collection dates:c. 1900
Metadata
Database number:176286
Authorizer:J. Zijlstra Enterer:J. Zijlstra
Modifier:M. Kouvari Research group:vertebrate
Created:2016-02-06 01:10:07 Last modified:2020-09-22 03:19:13
Access level:the public Released:2016-02-06 01:10:07
Creative Commons license:CC BY
Reference information

Primary reference:
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]

Secondary references:

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]