Mustersan

The Mustersan age is a period of geologic time (48.0–42.0 Ma) within the Eocene epoch of the Paleogene, used more specifically within the South American land mammal age (SALMA) classification. It follows the Casamayoran and precedes the Divisaderan age.^[1][2]

Etymology

This age is named after Lake Musters in the Golfo San Jorge Basin.

Formations

Locations of Mustersan formations

Formation bold is type	Country	Basin	Notes
Sarmiento Formation	Argentina	Golfo San Jorge Basin	[3][4]
Abanico Formation	Chile	Abanico Basin	[5][6]
Andesitas Huancache Formation	Argentina	Golfo San Jorge Basin	[7]
Chota Formation	Peru	Bagua Basin	[8][9]
Geste Formation	Argentina	Puna Plateau	[10][11]
Paracas Formation	Peru	Pisco Basin	[12]
Pozo Formation	Peru	Ucayali Basin	[13][14]
Soncco Formation	Peru	Eastern Peruvian Andes	[15]
Vaca Mahuida Formation	Argentina	Neuquén Basin	[16]
Ventana Formation	Argentina	Neuquén Basin	[17]
Yahuarango Formation - Santa Rosa fauna	Peru	Ucayali Basin	[18][9]

Fossils

Group	Fossils	Formation	Notes
Mammals	Antepithecus brachystephanus, Guilielmoscottia plicifera, Kramadolops mayoi, Propyrotherium saxeum, Pseudhyrax eutrachytheroides, Eomorphippus sp.	Sarmiento	[19][20]
	Chlorocyon phantasma, Ignigena minisculus, aff. Ernestokokenia sp., Borhyaenidae indet., Oldfieldthomasiidae indet.	Abanico	[21][22]
	Archaeopithecus cf. rogeri, Asmithwoodwardia subtrigona, Bardalestes hunco, Gashternia ctalehor, Greniodon sylvaticus, Henricosbornia lophodonta, Homalostylops parvus, Palangania cf. brandmayri, Polydolops rothi, P. unicus, Prostegotherium cf. astrifer, Amphidolops sp., Marmosopsis sp., Notostylops sp., Pauladelphys sp., Protodidelphis sp., Riostegotherium sp., Stegosimpsonia sp., Borhyaeninae indet., Caroloameghiniinae indet., Hathlyacininae indet.	Andesitas Huancache	[23][24]
	Antofagastia turneri, Bonapartherium serrensis, Parastegosimpsonia cf. peruana, Parutaetus punaensis, Prostegotherium notostylopianum, Pucatherium parvum, Punadolops alonsoi, Punahyrax bondesioi, Punapithecus minor, Punatherium catamarquensis, Reigia punae, Suniodon catamarcensis, Astegotherium sp., Callistoe sp., Colbertia sp., cf. Ernestokokenia sp., cf. Pampahippus sp., Propyrotherium sp., cf. Utaetus sp., Astrapotheriidae indet., Interatheriidae indet., Isotemnidae indet., Litopterna indet., Notohippidae indet., Notostylopidae indet., Notoungulata indet., Oldfieldthomasiidae indet., Typotheria indet.	Geste	[25][26] [27][28]
	Eobranisamys riverai, E. romeropittmanae, Eodelphomys almeidacomposi, Eoespina woodi, Eoincamys ameghinoi, E. pascuali, Eopicure kraglievichi, Eopululo wigmorei, Eosachacui lavocati, Eosallamys paulacoutoi, E. simpsoni, Hondonadia pittmanae, Incadolops ucayali, Kirutherium paititiensis, Kiruwamaq chisu, Micoureus laventicus, Parastegosimpsonia peruana, Patene campbelli, Perulestes cardichi, P. fraileyi, Perupithecus ucayaliensis, Rumiodon inti, Sasawatsu mahaynaq, Wamradolops tsullodon, Wirunodon chanku, Yuruatherium tropicalis, Guiomys sp., Scleromys sp., Sipalocyon sp., cf. Microsteiromys sp., Acaremyidae indet., Chiroptera indet., ?Gondwanatheria indet., Glyptodontinae indet., Hystricognatha indet., Interatheriinae indet., cf. Notohippidae indet.	Yahuarango	[29][30] [31][32]
Birds	Perudyptes devriesi	Paracas	[33]
	Psilopteridae indet.	Sarmiento	[19]
	Presbyornithidae indet.	Vaca Mahuida	[34]
Reptiles & amphibians	Boidae indet., Sebecidae indet., Testudines indet.	Geste	[27]
	Shelania laurenti	Vaca Mahuida	[16]
	Boinae indet.	Sarmiento	[19]
Insects	Acanthocephalonotum martinsnetoi, Archimyrmex piatnitzkyi, A. smekali, Madres delpueblo, ?Atalophlebia sp., Stratiomyidae indet.	Ventana	[35][36] [37]
Flora	Agathis zamunerae, Atherospermophyllum guinazui, Embothrium precoccineum , ?Embothrium pregrandiflorum, Fagus subferruginea, Lomatia preferruginea, Retrophyllum spiralifolium, Blechnum sp.	Ventana	[17][38] [39][40]

See also

• Lake Musters