Sinap Tepe (Locality 1)
Basic information
Sample name: Sinap Tepe (Locality 1)
Sample aka: Yassiören
Reference: S. Sen. 1991. Stratigraphie, faunes de mammifères et magnétostratigraphie du Néogène de Sinap Tepe, Province d'Ankara, Turquie. Bulletin du Muséum national d'histoire naturelle 12(3-4):243-277 [ER 3959]
Geography
Country: Turkey
Coordinate: 40° 14' N, 32° 39' E
Coordinate basis: based on nearby landmark
Formation: Sinap
Time interval: Late Miocene
Zone: MN9
Geography comments: the field area is 60 km northwest of Ankara and the site is shown as about 1.5 km north of the village of Yassiören, a name also used for the overall fauna in earlier literature (coordinate based on Yassiören)
from the "early Vallesian (MN 9)" Middle Member of the Sinap Formation
the member spans "only two polarity zones, normal and then reverse" and the fauna is interpreted as coming from a reversed zone somewhere between 11.5 Ma (the base of the Vallesian) and 10.3 Ma (the base of "Chron 11 ou Anomalie 5")
this is hard to interpret because chron C5 starts at 12.049 Ma and the lengthy C5n.2n starts at 11.056 Ma in the time scale of Ogg (2020), so the MN zone assignment is sufficient age control
from the "early Vallesian (MN 9)" Middle Member of the Sinap Formation
the member spans "only two polarity zones, normal and then reverse" and the fauna is interpreted as coming from a reversed zone somewhere between 11.5 Ma (the base of the Vallesian) and 10.3 Ma (the base of "Chron 11 ou Anomalie 5")
this is hard to interpret because chron C5 starts at 12.049 Ma and the lengthy C5n.2n starts at 11.056 Ma in the time scale of Ogg (2020), so the MN zone assignment is sufficient age control
Environment
Lithology: marl
Taphonomic context: fluvial deposit
Habitat comments: the Middle Member consists of "marnes plus ou moins sableuses et peu indurées" including a "nombreuses lentilles conglomératiques"
Methods
Life forms: rodents,other small mammals
Sample size: 30 specimens
Years: 1972
Sampling comments: the micromammals were collected by the author in 1972 from a point locality using unstated methods
numerous other listed species were collected at different times from different sites in the member
numerous other listed species were collected at different times from different sites in the member
Metadata
Sample number: 4368
Contributor: John Alroy
Enterer: John Alroy
Created: 2023-09-07 12:06:57
Modified: 2023-09-07 02:26:28
Abundance distribution
6 species
1 singleton
total count 30
geometric series index: 10.8
Fisher's α: 2.255
geometric series k: 0.5987
Hurlbert's PIE: 0.6759
Shannon's H: 1.3836
Good's u: 0.9724
Each square represents a species. Square sizes are proportional to counts.
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Register
| †Schizogalerix sinapensis | 2 | |
| new | ||
| Ochotona sp. | 10 | |
| compared to this genus: includes at least two lower molar fragments plus 8 specifically counted specimens | ||
| †Byzantinia dardanellensis | 13 | |
| †Cricetulodon hartenbergeri | 2 | |
| †Myomimus dehmi | 2 | |
| Atlantoxerus sp. | 1 | |