RD 480 (Ordovician to of Iran)

Where: Gilan, Iran (37.3° N, 49.2° E: paleocoordinates 30.9° S, 123.1° E)

• coordinate based on political unit

When: Actonian to Actonian (454.0 - 448.8 Ma)

• The fauna is likely to be late Caradoc–early Ashgill in age (sensu Fortey et al. 2000). A more specific age assignment is not possible due to the absence of independent fossil evidence.

• formation-level stratigraphic resolution

Environment/lithology: shelly/skeletal, red limestone

• The Tatavrud trilobites occur in a rich bioclastic limestone.

Size class: macrofossils

Primary reference: T. S. Karim. 2009. Late Ordovician trilobites from northwest Iran and their biogeographical affinities. Earth and Environmental Science Transactions of the Royal Society of Edinburgh 99:101-124 [M. Hopkins/M. Hopkins/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 232880: authorized by Pete Wagner, entered by Pete Wagner on 04.01.2024

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Corynexochida - Styginidae
? Failleana sp. Chatterton and Ludvigson 1976 trilobite
 Corynexochida - Illaenidae
Amphoriops sp. Hammann and Leone 1997 trilobite
Illaenus sp. Dalman 1827 trilobite
 Corynexochida - Panderiidae
Panderia cf. curta Petrunina 1975 trilobite
  - Isocolidae
Paratiresias alborzensis Karim 2009 trilobite
 Odontopleurida - Odontopleuridae
 Lichida - Lichidae
Dicranopeltis cf. polytoma Angelin 1854 trilobite
Metopolichas sp. Gürich 1901 trilobite
 Asaphida - Cyclopygidae
Symphysops sp., "Cyclopyge cf. binodosa" = Cyclopyge recurva
Symphysops sp. Raymond 1925 trilobite
"Cyclopyge cf. binodosa" = Cyclopyge recurva Lu 1962 trilobite
 Asaphida - Nileidae
Nileus sp. Dalman 1827 trilobite
 Asaphida - Asaphidae
 Phacopida - Pliomeridae
Ovalocephalus cf. tetrasulcatus Kielan 1960 trilobite
 Phacopida - Cheiruridae
 Proetida - Scharyiidae
Panarchaeogonus sp. Oepik 1937 trilobite
 Proetida - Proetidae
Mezzaluna tatavrudensis Karim 2009 trilobite
 Proetida - Telephinidae
Artiopoda
 Agnostida - Metagnostidae