Lapsarna
Basic information
Sample name: Lapsarna
Sample aka: LRN
Reference: K. Vasileiadou and N. Zouros. 2012. Early Miocene micromammals from the Lesvos Petrified Forest (Greece): preliminary results. Palaeobiodiversity and Palaeoenvironments 92:249-264 [ER 3932]
Geography
Country: Greece
State: Lesvos
County: Lapsarna
Coordinate: 39.257° N, 25.931° E
Coordinate basis: stated in text
Time interval: Early Miocene
Max Ma: 19
Min Ma: 18
Age basis: K-Ar
Geography comments: LRN is situated south west of the village of Lapsarna on a "rural earth-road"
The youngest age limit of the site based on K-Ar dating of an overlying volcanic layer is 18.4 +/- 0.5 Ma
A probable range of 19-18 Ma is given
There is conflict in assigning the site to a biozone as it has been attributed to somewhere between MN3 and MN4 based on both faunal composition and radiometric dating
"The fauna collected up to now is not complete enough to be correlated with certainty with a biozone"
The youngest age limit of the site based on K-Ar dating of an overlying volcanic layer is 18.4 +/- 0.5 Ma
A probable range of 19-18 Ma is given
There is conflict in assigning the site to a biozone as it has been attributed to somewhere between MN3 and MN4 based on both faunal composition and radiometric dating
"The fauna collected up to now is not complete enough to be correlated with certainty with a biozone"
Environment
Lithology: claystone
Taphonomic context: lake deposit
Habitat comments: "20-cm-thick layer of black-brown clay, very rich in organic material"
Sediments and the presence of lacustrine gastropods, fish, and reptiles indicate the presence of a large lake
Sediments and the presence of lacustrine gastropods, fish, and reptiles indicate the presence of a large lake
Methods
Life forms: bats,rodents,other small mammals,lizards,other reptiles,snakes,snails,frogs,fishes,salamanders
Sampling methods: screenwash
Sample size: 1436 specimens
Sampling comments: Screenwashed through sieves mesh sized 0.5 mm
~150kg of sediment was processed at the time of publication
~150kg of sediment was processed at the time of publication
Metadata
Sample number: 4335
Contributor: Jack Nesbitt
Enterer: Jack Nesbitt
Modifier no: Nicholas Vine
Created: 2023-07-21 14:20:26
Modified: 2024-12-09 03:49:22
Abundance distribution
28 species
6 singletons
total count 1436
geometric series index: 41.7
Fisher's α: 4.932
geometric series k: 0.7864
Hurlbert's PIE: 0.7050
Shannon's H: 1.7331
Good's u: 0.9958
Each square represents a species. Square sizes are proportional to counts.
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Register
| Chiroptera indet. | 3 | |
| Erinaceidae indet. | 1 | |
| Talpidae indet. | 2 | |
| Soricidae indet. | 2 | |
| Eumyarion sp. | 10 | |
| "Eumyarion aff. latior/weinfurteri" | ||
| Democricetodon sp. | 3 | |
| †Glirulus (Glirulus) cf. diremptus | 4 | |
| Bithynia sp. | 22 | |
| "22 complete calcareous opercula and several operculum fragments" | ||
| Emmericia sp. | 16 | |
| "1 complete shell, more than 15 fragmented shells" | ||
| Bania sp. | 25 | |
| ? "More than 25 mostly fragmented specimens" | ||
| Hydrobiidae indet. | 3 | |
| Radix sp. | 7 | |
| ? "At least seven specimens and several fragments" | ||
| Lymnaeidae indet. | 18 | |
| "At least 18 specimens and several fragments" | ||
| Gyraulus sp. | 31 | |
| "At least 31 specimens and several fragments" | ||
| Planorbarius sp. | 10 | |
| "More than 10 specimens" | ||
| Helicidae indet. | 25 | |
| Milax sp. | 10 | |
| Limax sp. | 11 | |
| Palaeoleuciscus sp. | 94 | |
| Barbus s.l. | 657 | |
| Cyprinion sp. | 398 | |
| Mioproteus sp. | 8 | |
| ? | ||
| Anura indet. | 1 | |
| Crocodylia indet. | 71 | |
| Lacertidae indet. | 1 | |
| Natricinae indet. | 1 | |
| ? | ||
| Serpentes indet. | 1 | |
| Squamata indet. | 1 | |