Grossberg Bank
Basic information
Sample name: Grossberg Bank

Sample aka: Laubenheim

Reference: J. J. Brinkkötter and T. Martin. 2015. Small mammals and stratigraphic position of the \"Grossberg-Bank\" (lower Oberrad Formation, MN1, early Miocene) at Laubenheim Quarry in the Mainz Basin, SW Germany, and their implications for early Miocene biostratigraphy. Paläontologische Zeitschrift 89:995-1022 [ER 2395]
Geography
Country: Germany

Coordinate: 50° 57' N, 8° 19' E
Latlng basis: based on nearby landmark

Formation: Oberrad

Time interval: Early Miocene

Zone: MN1

Age basis: zone

Geography comments: "southeast of the center of Mainz within the districts Mainz-Weisenau, Mainz-Laubenheim, and Mainz-Hechtsheim... in the Laubenheim quarry" (coordinate based on Mainz-Laubenheim)
in "the lower Oberrad Formation... presumably of Aquitanian (Lower Miocene)" based on biostratigraphy of multiple taxa; "uppermost MN1" based on the mammals themselves

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Environment
Substrate: ground surface

Lithology: marl

Taphonomic context: lagoon deposit

Habitat comments: "light to brownish gray, unstratified Hydrobia marl... floating cadavers" were "delivered by rivers from the hinterland of the Mainz Basin lagoon" (i.e., the greater environmental context is a lagoon)

Methods
Life forms: rodents, other small mammals

Excluded forms: carnivores, ungulates, other small mammals

Sampling methods: screenwash

Sample size: 55 specimens

Net or trap nights: 0

Basal area status: not applicable

Sampling comments: "Apart from brackish-marine invertebrates and aquatic vertebrates" the sample "yielded a large number of disarticulated bones, mandibles, and teeth of terrestrial vertebrates such as reptiles, birds, and mammals" (lagomorphs, ungulates, and carnivorans are listed but not described)
"The material was collected predominantly on the surface of the fossiliferous bed... a few kilograms of sediment" were collected "from the fossiliferous layer for extraction of microvertebrates" (presumably using screening)

Metadata
Sample no: 2589

Contributor no: John Alroy

Enterer: John Alroy

Modifier no: John Alroy

Created: 2017-02-18 12:37:51

Modified: 2025-09-02 06:09:38

Abundance distribution
Each square represents a species. Square sizes are proportional to counts. Values are logged.
Statistics
11 species
3 singletons
total count 55
geometric series index: 20.3
Fisher's α: 4.135
geometric series k: 0.7628
Hurlbert's PIE: 0.83
Shannon's H: 2.0175
Good's u: 0.9468
Register
†Amphiperatherium frequens 3
Paratalpa sp. 4
Asthenoscapter sp. 1
Dimylus cf. paradoxus 1
Dimyloides rigassii 1
Soricidae indet.2
†Palaeosciurus cf. feignouxi 2
Steneofiber eseri 15
Microdyromys sp. 12
†Rhodanomys schlosseri 8
†Plesiosminthus myarion 6