Shaqra Group (Dhruma Fm.): Bathonian, Saudi Arabia

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Bathnosmilia boureqi
=Hexac.
Anthozoa - Scleractinia - Montlivaltiidae
Montlivaltia sp. Lamouroux 1821
Anthozoa - Scleractinia - Andemantastraeidae
Andemantastraea gaultierensis (Koby 1906)
Anthozoa - Scleractinia - Haplaraeidae
Astraraea amorpha
Anthozoa - Scleractinia - Thamnasteriidae
Thamnasteria dumorti
Anthozoa - Scleractinia - Microsolenidae
Chomatoseris sp. Thomas 1935
Chomatoseris jacobi Alloiteau 1945
Chomatoseris orbulites (Lamouroux 1821)
Genabacia stellifera (d'Archiac 1843)
Rhynchonellata - Rhynchonellida - Tetrarhynchiidae
Burmirhynchia sp. Buckman 1917
=n.sp.A
Rhynchonellata - Terebratulida - Loboidothyrididae
Cererithyris bihinensis (Weir 1929)
recombined as Arabatia bihinensis
Rhynchonellata - Terebratulida - Lobothyrididae
Tubithyris cf. jubaensis (Weir 1929)
Bivalvia - Nuculida - Nuculidae
Nucula cf. cuneiformis Sowerby 1840
recombined as Nucula (Palaeonucula) cuneiformis
Bivalvia - Nuculanida - Nuculanidae
Nuculana ex gr. castor
Bivalvia - Pectinida - Limidae
Plagiostoma gigantea Sowerby 1814
corrected as Plagiostoma giganteum
Plagiostoma cf. subcardiiformis Greppin 1867
Bivalvia - Pectinida - Entoliidae
Entolium cf. corneolum (Young and Bird 1828)
recombined as Entolium (Entolium) corneolum
Bivalvia - Pectinida - Pectinidae
Chlamys nattheimensis
Chlamys cf. textorius (Schlotheim 1820)
recombined as Chlamys textoria
Camptonectes laminatus (Sowerby 1818)
Bivalvia - Ostreida - Gryphaeidae
Gryphaea costellata (Douvillé 1916)
Bivalvia - Ostreida - Palaeolophidae
Lopha solitaria (Sowerby 1824)
synonym of Actinostreon gregareum
Bivalvia - Lucinida - Lucinidae
Fimbria cf. lajoyei d'Archiac 1843
Bivalvia - Lucinida - Mactromyidae
Mactromya cf. concentrica
Bivalvia - Thraciida - Thraciidae
Thracia cf. curtensata
Bivalvia - Pholadomyida - Pholadomyidae
Pholadomya lirata (Sowerby 1818)
Pholadomya protei (Brongniart 1821)
recombined as Pholadomya (Bucardiomya) protei
Homomya cf. gibbosa Sowerby 1814
Bivalvia - Cardiida - Cardiidae
Protocardia ex gr. hillanum
Bivalvia - Megalodontida - Ceratomyopsidae
Ceratomyopsis cf. arabica (Cox 1935)
Bivalvia - Megalodontida - Dicerocardiidae
Pseudisocardia cf. macfadyeni Cox 1935
Bivalvia - Carditida - Astartidae
Neocrassina ovata
Bivalvia - Trigoniida - Trigoniidae
Trigonia ex gr. pullus Sowerby 1826
Gastropoda - Procerithiidae
Procerithium sp. Cossmann 1902
Gastropoda - Ampullinidae
Globularia sp. Swainson 1840
Gastropoda - Pleurotomariidae
Pleurotomaria sp. Defrance 1826
Gastropoda - Discohelicidae
Discohelix sp. Dunker 1847
Gastropoda - Heterostropha - Nerinellidae
Nerinella sp. Sharpe 1849
=sp.1
Gastropoda - Heterostropha - Cylindrobullinidae
Cylindrites sp. Gesner 1758
replaced by Rugalindrites
Gastropoda - Opisthobranchia - Cylichnidae
Cylichna sp. Lovén 1846
Gastropoda - Opisthobranchia
Nerinea bruntrutana Ooster 1869
synonym of Ptygmatis pseudobruntrutana
Bactroptyxis sp. Cossmann 1896
Cephalopoda - Ammonitida - Tulitidae
Tulites cf. arabicus Arkell 1952
see common names

Geography
Country:Saudi Arabia
Coordinates: 26.9° North, 44.0° East (view map)
Paleocoordinates:1.6° North, 33.3° East
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period:Jurassic Epoch:Middle Jurassic
Stage:Bathonian 10 m.y. bin:Jurassic 4
Key time interval:Bathonian
Age range of interval:168.20000 - 165.30000 m.y. ago
Stratigraphy
Geological group:Shaqra Formation:Dhruma
Local section:Coupe du Nafud al Mazhur Local bed:D4
Local order:bottom to top
Lithology and environment
Primary lithology: lithified "limestone"
Includes fossils?Y
Environment:lagoonal/restricted shallow subtidal Tectonic setting:cratonic basin
Geology comments: The Dhruma Fm. essentially is composed of limestones and clayey rocks in its central outcrop zone but passes to detrial facies northwards and southwards.
Taphonomy
Size of fossils:macrofossils,microfossils
Collection methods and comments
Collection methods:bulk,mechanical,field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:48447
Authorizer:F. Fursich Enterer:S. Hicks
Modifier:S. Hicks Research group:marine invertebrate
Created:2005-03-20 08:31:05 Last modified:2005-03-20 10:55:32
Access level:the public Released:2005-03-20 08:31:05
Creative Commons license:CC BY
Reference information

Primary reference:
11728. J. Manivit, Y.-M. Le Nindre, and D. Vaslet. 1990. Le Jurassique D`Arabie Centrale. Document du BRGM 4(194):25-519 [F. Fursich/S. Hicks/W. Kiessling]