Microsyops - Evolution der Primaten

†Microsyops (Microsyopidae)

Microsyops ist eine Primatengattung innerhalb der Familie Microsyopidae, deren 10 Mitglieder ab dem frühen Paläogen (Eozän) im Ypresium lebten, das vor ungefähr 56 Millionen Jahren begann und bis vor 47,8 Millionen Jahren andauerte. Viele Überreste wurden in Vereinigte Staaten von Amerika (USA) gefunden.

Microsyops aus der erfolgreichen Familie Microsyopidae (Unterfamilie Mycrosyopinae) lebte vom späten Paläozän bis ins mittlere Eozän in Nordamerika

Microsyops angustidens

Das Typusexemplar mit der Bezeichnung A.M.N.H. No. 15073 ist ein fragmentarischer linker Unterkiefer mit Prämolaren und Molaren, sowie ein Fragment eines rechten Unterkiefers, ebenfalls mit Prämolaren und Molaren. Der Fund stammt aus der Willwood Formation Wyomings und ist zwischen 55,4 und 50,3 Millionen Jahre alt. Er wird am American Museum of Natural History aufbewahrt. Microsyops angustidens war ein baumlebender Allesfresser. Aufgrund von Messungen seiner Backenzähne geht man von einem Körpergewicht von 886,1 Gramm aus.

Fundorte

Die Funddaten, die Systematik sowie die unten folgende Literatursammlung stammen aus der Paleobiology Database, Lizenz

Microsyops annectens

Das Typusexemplar mit der Bezeichnung Y.P.M. No. 11791 ist ein Unterkieferfragment mit einem Molaren (M3). Microsyops annectens war ein baumlebender Allesfresser. Aus Messungen seiner Backenzähne schließt man auf ein Körpergewicht von 2,49 Kilogramm.

In der Paleobiology Database gibts zu Microsyops annectens folgenden Eintrag:
Sammlung	Kommentar zum Fundort	Epoche, Alter
Blue Point Marker (UW V-78001)
Museum	Kommentar z. Taxonomie
UW	overlies the "turtle-lake beds"

Steckbrief

Die Welt zur Zeit von Microsyops
Landmassenverteilung im Eozän Bild: Ron Blakely
Ernährung/Lebensraum
Basierend auf den Fossilien glaubt man, dass die Primatengattung Microsyops Allesfresser (omnivor) waren. Ihr Leben verbrachen die Tiere vermutlich in den Bäumen (arboreal), wo sie auch ihre Nahrung fanden.
* Daten nach Kihm, 1984
Geographie, Epoche
Lebte im:	System: Paläogen Serie: Eozän Stufe: Ypresium
Verbreitung:	Nordamerika Vereinigte Staaten von Amerika (USA)

Physiologie
Gewicht:	?
Schwestertaxa
†Navajovius †Uintasoricinae †Microsyopinae †Nanomomys

Microsyops elegans

Das Typusexemplar trägt die Bezeichnung Y.P.M. No. 11794 und ist ein Fragment des linken Unterkieferastes (Ramus mandibulae) mit Prämolaren und Molaren (P4-M2). Der Fund stammt aus der Bridger Formation von Wyoming und ist zwischen 50,3 und 46,2 Millionen Jahre alt.

In der Paleobiology Database gibts zu Microsyops elegans folgenden Eintrag:
Sammlung	Kommentar zum Fundort	Epoche, Alter
Exposure Near Top of Buzzard Pass	DeBeque	FMNH 485-41
Kommentar z. Stratigraphie	Museum
said to be late Wasatchian	FMNH

Microsyops knightensis

Das kleine Säugetier war ein baumlebender Allesfresser. Die Größe und die Morphologie seiner Backenzähne lassen auf ein Körpergewicht von 1,18 Kilogramm schließen.

In der Paleobiology Database gibts zu Microsyops knightensis folgenden Eintrag:
Sammlung	Kommentar zum Fundort	Epoche, Alter
Huerfano VI	Huerfano	Garcia Canyon; Apodaca Gulch; UCM locality 77040
Kommentar z. Stratigraphie	Kommentar z. Taxonomie
"Huerfano facies"	Lostcabinian\r\n\r\n"Most of Wortman's collection of 1897 came from here and probably from unit 13 of measured section; unit 13 has consistently produced good specimens and matches the description of the best bone-bearing layer given by Wortman to Osborn. Granger and Olsen also made good collections here."

Microsyops kratos

Das Typusexemplar hat die Bezeichnung CIT Vert. Pale. Coll. No. 2232. Dabei handelt es sich um einen linken Unterkieferast (Ramus mandibulae) mit Prämolaren und Molaren (P4-M3). Wurzelfragmente sind von den vorderen Prämolaren und dem Eckzahn erhalten.

In der Paleobiology Database gibts zu Microsyops kratos folgenden Eintrag:
Sammlung	Kommentar zum Fundort	Epoche, Alter
San Diego Mission (CIT 249)	Friars
Kommentar z. Stratigraphie	Museum	Kommentar z. Taxonomie
undifferentiated	CIT	stratigraphic position based on that of new San Diego Mission localities of Walsh 1996b

Microsyops kratos war ein baumlebender Allesfresser (Omnivore). Basierend auf Messungen seiner Backenzähne gehen Forscher von einem Körpergewicht von 2,92 Kilogramm aus.

Microsyops latidens

Das Typusexemplar mit der Bezeichnung AMNH No4195 ist ein fragmentarisch erhaltener Unterkiefer mit einem linken Prämolaren (P4) und zwei Molaren (M1-2).

In der Paleobiology Database gibts zu Microsyops latidens folgenden Eintrag:
Sammlung	Kommentar zum Fundort	Epoche, Alter	Geologie, Formation
Indian Valley	DeBeque
Kommentar z. Stratigraphie	Kommentar z. Taxonomie
said to be middle Wasatchian	strat level is very approximate

Microsyops scottianus

Das Typusexemplar hat die Bezeichnung A.M.N.H. no. 4748. Dabei handelt es sich um einen fragmentarischen Unterkiefer mit Backenzähnen (P4-M2).

In der Paleobiology Database gibts zu Microsyops scottianus folgenden Eintrag:
Sammlung	Epoche, Alter	Geologie, Formation
Blue Rim	Wasatch	NF-1
Kommentar z. Stratigraphie
originally "Western Facies" of the "New Fork Tongue Member"

Systematik

Microsyopinae
- †Microsyops

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K. T. Smith, P. A. Holroyd, J. Stamatakos, G. F. Gunnell, W. S. Bartels 2003, Rare taxa, biostratigraphy, and the Wasatchian-Bridgerian boundary in North America. Geological Society of America Special Paper. 369:3, p. 501 - 511, DOI: 10.1017/CBO9780511665431.003

B. D. Rankin, P. A. Holroyd, J. Stamatakos, G. F. Gunnell, W. S. Bartels 2014, Aceroryctes dulcis, a new palaeoryctid (Mammalia, Eutheria) from the early Eocene of the Wasatch Formation of southwestern Wyoming, USA. Canadian Journal of Earth Sciences. 51:3, p. 919 - 926, DOI: 10.1139/cjes-2014-0101

G. F. Gunnell, J.-P. Zonneveld, W. S. Bartels 2016, Stratigraphy, mammalian paleontology, paleoecology, and age correlation of the Wasatch Formation, Fossil Butte National Monument, Wyoming\r\n. Journal of Paleontology. 90:5, p. 981 - 1011, DOI: 10.1017/jpa.2016.100

S. G. Strait, P. A. Holroyd, C. A. Denvir, B. D. Rankin 2016, Early Eocene (Wasatchian) rodent assemblages from the Washakie Basin, Wyoming. PaleoBios. 33:5, p. 1 - 28, DOI: 10.1017/jpa.2016.100