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

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Trichordis sp.
=n.sp.=Ostrac.
Ostracoda - Podocopida - Bairdiidae
Bairdia cf. hilda
Ostracoda - Podocopida
Glyptocythere huniensis
Ostracoda
Amicytheridea sp.
=n.sp.A=Ostrac.
Rhynchonellata - Rhynchonellida - Tetrarhynchiidae
Kallirhynchia sp. Buckman 1917
=sp.1
Burmirhynchia sp. Buckman 1917
=n.sp.A
Rhynchonellata - Terebratulida - Eudesiidae
Eudesia magharensis Farag 1960
recombined as Eudesia (Sphriganaria) magharensis
Bivalvia - Mytilida - Mytilidae
Modiolus bipartitus Sowerby 1818
Modiolus imbricatus (Sowerby 1818)
recombined as Modiolus (Modiolus) imbricatus
Arcomytilus somaliensis
Inoperna cf. sowerbyana
Bivalvia - Pectinida - Limidae
Plagiostoma gigantea Sowerby 1814
corrected as Plagiostoma giganteum
Pseudolimea harronis
Bivalvia - Pectinida - Oxytomidae
Oxytoma cf. inaequivalis
original and current combination Avicula (Oxytoma)
Bivalvia - Pectinida - Entoliidae
Entolium cf. corneolum (Young and Bird 1828)
recombined as Entolium (Entolium) corneolum
Bivalvia - Pectinida - Pectinidae
Eopecten regulatus
Spondylopecten cf. subspinosus
Chlamys cf. curvivarians (Dietrich 1933)
Bivalvia - Ostreida - Eligmidae
Eligmus polytypus Eudes-Deslongchamps 1856
Eligmus aff. rollandi Douvillé 1907
Bivalvia - Ostreida - Pinnidae
Stegoconcha cf. gmuelleri (Krenkel 1910)
Bivalvia - Ostreida - Palaeolophidae
Lopha gregarea (Sowerby 1816)
recombined as Actinostreon gregareum
Lopha solitaria (Sowerby 1824)
synonym of Actinostreon gregareum
Bivalvia - Arcida - Parallelodontidae
Parallelodon hirsonensis d'Archiac 1843
Bivalvia - Lucinida - Lucinidae
Fimbria cf. lajoyei d'Archiac 1843
Bivalvia - Lucinida - Mactromyidae
Mactromya cf. crassa Agassiz 1845
Bivalvia - Pholadomyida - Pholadomyidae
Pholadomya aequalis
Pholadomya lirata (Sowerby 1818)
Pholadomya cf. aubryi Douville 1886
Pholadomya somaliensis Cox 1935
recombined as Pholadomya (Bucardiomya) somaliensis
Homomya cf. gibbosa Sowerby 1814
Bivalvia - Pholadida - Ceratomyidae
Ceratomya cf. concentrica Sowerby 1822
Bivalvia - Pholadida - Pleuromyidae
Pleuromya cf. alduini (Brongniart 1821)
Bivalvia - Cardiida - Arcticidae
Pseudotrapezium cf. cordiformis
Bivalvia - Cardiida - Pterocardiidae
Pterocardia buvignieri
Bivalvia - Megalodontida - Ceratomyopsidae
Ceratomyopsis cf. arabica (Cox 1935)
Ceratomyopsis somaliensis (Weir 1929)
Bivalvia - Megalodontida - Dicerocardiidae
Pseudisocardia cf. macfadyeni Cox 1935
Bivalvia - Trigoniida - Trigoniidae
Trigonia ex gr. pullus Sowerby 1826
Gastropoda - Tylostomatidae
Pterodonta sp. d'Orbigny 1843
Gastropoda - Ampullinidae
Globularia sp. Swainson 1840
Gastropoda - Trochidae
Trochus sp. Linnaeus 1758
Gastropoda - Heterostropha - Nerineidae
Nerinea sp. Deshayes 1827
Echinoidea - Salenioida - Acrosaleniidae
Acrosalenia arabica
Acrosalenia bowersi
Globotextulariidae
Pseudomarssonella reflexa
Prolixoplectidae
Riyadhella rotundata
Riyadhella elongata
Nautiloculinidae
Nautiloculina oolithica
Trocholinidae
Trocholina sp. Paalzow 1922
=Foram.
see common names

Geography
Country:Saudi Arabia
Coordinates: 24.0° North, 46.2° East (view map)
Paleocoordinates:2.0° South, 33.7° 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 Khashm al Jufayr Local bed:D3,2
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:48142
Authorizer:F. Fursich Enterer:S. Hicks
Modifier:S. Hicks Research group:marine invertebrate
Created:2005-03-15 04:55:37 Last modified:2005-03-15 06:55:38
Access level:the public Released:2005-03-15 04:55:36
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]