Aleshrud (Karangian) (Miocene of Iran)

Where: Iran (36.6° N, 52.2° E: paleocoordinates 36.2° N, 51.1° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Karanga Formation, Middle Miocene (16.0 - 11.6 Ma)

• STRATIGRAPHIC RELATIONS: From the Karagan horizon. No further lithostratigraphic data reported. AGE: Karaganian (Middle Miocene). STRATIGRAPHIC POSITION: From unknown position within the Karagan horizon.

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; calcareous sandstone

• ENVIRONMENT: Shallow marine siliciclastic environment, possibly nearshore based on faunal composition.
• SPECIFIC LITHOLOGY: Calcareous sandstone, very fine grained, calcareous, thin-bedded, with several intercalations of oolitic limestone; containing abundant fossils. LITHIFICATION: Unknown.

Size class: macrofossils

Collection methods: surface (in situ),

• COLLECTOR: Not stated, presumbaly P. E. Süssli. REPOSITORY: Not stated, presumably Geological Survey of Iran.

Primary reference: P. E. Süssli. 1976. The Geology of the Lower Haraz Valley area, Central Alborz, Iran. Geological Society of Iran Report 38 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 77215: authorized by Austin Hendy, entered by Austin Hendy on 01.01.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for gastropoda and bivalvia. NOMENCLATURE: Antiquated, but mostly assigned to species level.
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Actinopteri
 Salmoniformes -
Spaniodon opisthodon, Spaniodon squamigera
Gastropoda
 Sorbeoconcha - Naticidae
Natica sp.
Natica sp. Scopoli 1777 moon snail
 Neogastropoda - Nassariidae
"Nassa dujardini" = Tritia agatensis
"Nassa dujardini" = Tritia agatensis Bellardi 1882 snail
 Neogastropoda - Buccinidae
Nassa sp.
Nassa sp. Röding 1798 true whelk
 Sorbeoconcha - Hydrobiidae
Hydrobia sp.
Hydrobia sp. Hartmann 1821 snail
 Sorbeoconcha - Rissoidae
Rissoa barboti, Rissoa grandis, Rissoa sp., Mohrensternia barboti
Rissoa sp. Fréminville 1814 snail
Bivalvia
 Nuculanida - Nuculanidae
"? Leda sp." = Nuculana
"? Leda sp." = Nuculana Link 1807 pointed nut clam
 Cardiida - Kelliellidae
Spaniodontella gentilis, Spaniodontella puchella
 Cardiida - Veneridae
Tapes sp.
Tapes sp. Mühlfeld 1811 venus clam
 Cardiida - Cardiidae
Cardium sp.
Cardium sp. Linnaeus 1758 cockle
 Pholadida - Pholadidae
Barnea nyratamica