Shaqra Group (Dhruma Fm.): Callovian, Saudi Arabia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Ostracoda
- Platycopida
- Cytherellidae
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Cytherella aff. index
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Ostracoda
- Podocopida
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Afrocytheridea faveolata
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Rhynchonellata
- Rhynchonellida
- Tetrarhynchiidae
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Daghanirhynchia daghaniensis
Muir-Wood 1935
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Rhynchonellata
- Terebratulida
- Eudesiidae
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Eudesia cardioides
Douvillé 1916
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recombined as Eudesia (Sphriganaria) cardioides | ||||||||||
Rhynchonellata
- Terebratulida
- Loboidothyrididae
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Cererithyris bihinensis
(Weir 1929)
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recombined as Arabatia bihinensis | ||||||||||
Bivalvia
- Nuculida
- Nuculidae
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Nucula cf. cuneiformis
Sowerby 1840
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recombined as Nucula (Palaeonucula) cuneiformis | ||||||||||
Bivalvia
- Mytilida
- Mytilidae
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Modiolus bipartitus
Sowerby 1818
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Modiolus imbricatus
(Sowerby 1818)
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recombined as Modiolus (Modiolus) imbricatus | ||||||||||
Arcomytilus somaliensis
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Inoperna cf. sowerbyana
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Falcimytilus aff. suprajurensis
(Cox 1925)
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Bivalvia
- Pectinida
- Limidae
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Plagiostoma cf. laeviusculum
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Plagiostoma rigidum
(Sowerby 1815)
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recombined as Lima (Plagiostoma) rigida | ||||||||||
Plagiostoma cf. subcardiiformis
Greppin 1867
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Bivalvia
- Pectinida
- Entoliidae
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Entolium cf. corneolum
(Young and Bird 1828)
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recombined as Entolium (Entolium) corneolum | ||||||||||
Bivalvia
- Pectinida
- Pectinidae
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Eopecten inequistriatus
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Chlamys nattheimensis
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Chlamys splendens
(Dollfus 1863)
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Chlamys cf. curvivarians
(Dietrich 1933)
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Chlamys cf. textorius
(Schlotheim 1820)
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recombined as Chlamys textoria | ||||||||||
Camptonectes laminatus
(Sowerby 1818)
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Bivalvia
- Ostreida
- Gryphaeidae
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Nanogyra nana
(Sowerby 1822)
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recombined as Nanogyra (Nanogyra) nana | ||||||||||
Nanogyra cf. striata
Smith 1817
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synonym of Nanogyra (Palaeogyra) virgula | ||||||||||
Gryphaea costellata
(Douvillé 1916)
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Gryphaea bilobata
Sowerby 1835
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Bilobissa sublobata
(Deshayes 1830)
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Liostrea cf. hisingeri
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Bivalvia
- Ostreida
- Eligmidae
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Eligmus cf. analites
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Bivalvia
- Ostreida
- Pinnidae
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Trichites saussurei
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Bivalvia
- Ostreida
- Palaeolophidae
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Lopha gregarea
(Sowerby 1816)
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recombined as Actinostreon gregareum | ||||||||||
Lopha solitaria
(Sowerby 1824)
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synonym of Actinostreon gregareum | ||||||||||
Lopha cf. marshii
(Sowerby 1814)
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recombined as Actinostreon marshi | ||||||||||
Bivalvia
- Arcida
- Parallelodontidae
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Parallelodon hirsonensis
d'Archiac 1843
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Bivalvia
- Lucinida
- Lucinidae
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Fimbria cf. lajoyei
d'Archiac 1843
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Bivalvia
- Lucinida
- Mactromyidae
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Mactromya cf. concentrica
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Bivalvia
- Thraciida
- Thraciidae
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Thracia cf. curtensata
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Bivalvia
- Pholadomyida
- Pholadomyidae
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Pholadomya lirata
(Sowerby 1818)
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Pholadomya protei
(Brongniart 1821)
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recombined as Pholadomya (Bucardiomya) protei | ||||||||||
Homomya cf. gibbosa
Sowerby 1814
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Bivalvia
- Pholadida
- Ceratomyidae
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Gresslya ex gr. gregaria
(von Zieten 1833)
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Ceratomya excentrica
(Roemer 1836)
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Ceratomya cf. concentrica
Sowerby 1822
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Bivalvia
- Cardiida
- Cardiidae
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Protocardia ex gr. hillanum
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Protocardia cf. subhillanum
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Bivalvia
- Megalodontida
- Ceratomyopsidae
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Ceratomyopsis cf. arabica
(Cox 1935)
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Bivalvia
- Megalodontida
- Dicerocardiidae
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Pseudisocardia cf. macfadyeni
Cox 1935
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Bivalvia
- Carditida
- Astartidae
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Neocrassina ovata
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Astarte scytalis
Holdhaus 1913
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synonym of Seebachia (Eoseebachia) sowerbyana | ||||||||||
Coelopis cf. lunata
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Bivalvia
- Trigoniida
- Trigoniidae
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Trigonia ex gr. pullus
Sowerby 1826
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Spirillinidae
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Spirillina sp.
Reuss 1862
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Pfenderinidae
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Praekurnubia crusei
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Nautiloculinidae
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Nautiloculina sp.
Mohler 1938
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Trocholinidae
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Trocholina sp.
Paalzow 1922
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=Foram. | ||||||||||
Nodosariata
- Robertinida
- Epistominidae
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Epistomina sp.
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see common names |
Geography
Country: | Saudi Arabia |
Coordinates: | 25.7° North, 45.7° East (view map) |
Paleocoordinates: | 0.3° South, 34.0° East |
Basis of coordinate: | stated in text |
Geographic resolution: | outcrop |
Time
Period: | Jurassic | Epoch: | Middle Jurassic |
Stage: | Callovian | 10 m.y. bin: | Jurassic 5 |
Key time interval: | Callovian | ||
Age range of interval: | 165.30000 - 161.50000 m.y. ago |
Stratigraphy
Geological group: | Shaqra | Formation: | Dhruma | Member: | Hisyan Mb. |
Local section: | Coupe du Khashm Furaythah | Local bed: | D7,a | ||
Local order: | bottom to top |
Lithology and environment
Primary lithology: | yellow lithified claystone | ||
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: | 48594 | ||
Authorizer: | F. Fursich | Enterer: | S. Hicks |
Modifier: | S. Hicks | Research group: | marine invertebrate |
Created: | 2005-03-24 04:35:35 | Last modified: | 2005-03-24 06:53:58 |
Access level: | the public | Released: | 2005-03-24 04:35:35 |
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] |