PBDB Collection

South of Anarak, Nakhlak (second ammonoid zone) (Triassic to of Iran)

Where: Isfahan, Iran (33.0° N, 53.7° E: paleocoordinates 3.0° N, 46.0° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Alam Formation (Nakhlak Group), Aegean to Aegean (247.2 - 242.0 Ma)

• Faunal list is combined for the 'Early to Middle Anisian', here taken to mean Aegean - Bithynian. Fossils come from Units 8 - 11, but mostly Unit 11 (Vaziri 2011).

• member-level stratigraphic resolution

Environment/lithology: marine; calcareous shale and sandstone

• Most fossils come from 'lithozone' 28 in Bed 11, described as "green, thin-bedded calcareous shale with intercalations of purple medum-bedded sandstone and grey limestone, ammonoid bearing"

Size class: macrofossils

Primary reference: S. H. Vaziri. 2011. A review on Late Scythian to Middle Anisian Ammonoids from the Alam Formation in Nakhlak area, Central Iran. Journal of Sciences (Islamic Azad University) 21(81):201-212 [A. Dunhill/B. Allen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 211341: authorized by Alex Dunhill, entered by Bethany Allen on 14.07.2020

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

unclassified
-	Stenopapnoceras transiens, Parapinacoceras cf. damesi Stenopapnoceras transiens Parapinacoceras cf. damesi
Cephalopoda
Ceratitida - Noritidae	Norites gondola Norites gondola Mojsisovics 1869 ceratite
Ceratitida - Cladiscitidae	Procladiscites sp. Procladiscites sp. von Mojsisovics 1882 ceratite
Ceratitida - Ceratitidae	"Nicomedites cf. toulai" = Kocaelia toulai, "Semibeyrichites ruttneri" = Kocaelia ruttneri, Hollandites tozeri, Aghdarbandites ismidicus, Paraceratites aff. binodosus "Nicomedites cf. toulai" = Kocaelia toulai Arthaber 1915 ceratite "Semibeyrichites ruttneri" = Kocaelia ruttneri Krystyn and Tatzreiter 1991 ceratite Hollandites tozeri ceratite Aghdarbandites ismidicus Arthaber 1915 ceratite Paraceratites aff. binodosus Hauer 1850 ceratite
Ceratitida - Gymnitidae	Gymnites asseretoi, Gymnites palmai, Gymnites religiosus Gymnites asseretoi Tozer 1972 ceratite Gymnites palmai von Mojsisovics 1869 ceratite Gymnites religiosus Diener 1907 ceratite
Ceratitida - Sturiidae	"Ptychites aff. pauli" = Discoptychites pauli, Sturia sp. "Ptychites aff. pauli" = Discoptychites pauli von Mojsisovics 1882 ceratite Sturia sp. von Mojsisovics 1882 ceratite
Ceratitida - Longobarditidae	"Hungarites cf. proponticus" = Longobarditoides solimani "Hungarites cf. proponticus" = Longobarditoides solimani Toula 1896 ceratite
Ceratitida - Proptychitidae	Proptychitoides decipiens Proptychitoides decipiens Spath 1930 ceratite
Ceratitida - Kazakhstanitidae	Kazakhstanites dolnapensis Kazakhstanites dolnapensis Shevyrev 1968 ceratite
Ceratitida - Acrochordiceratidae	"Epacrochordiceras sp." = Acrochordiceras, Acrochordiceras aff. hyatti "Epacrochordiceras sp." = Acrochordiceras Hyatt 1877 ceratite Acrochordiceras aff. hyatti Meek 1877 ceratite
Phylloceratida - Ussuritidae	Monophyllites kieperti, Ussurites arthaberi Monophyllites kieperti Toula 1896 ammonite Ussurites arthaberi Welter 1915 ammonite
Phylloceratida - Palaeophyllitidae	Eophyllites davoudzadehi, Leiophyllites aff. pitamaha, "Leiophyllites stoecklini" = Stenophyllites stoecklini Eophyllites davoudzadehi ammonite Leiophyllites aff. pitamaha Diener 1895 ammonite "Leiophyllites stoecklini" = Stenophyllites stoecklini Tozer 1972 ammonite