Coombe Quarry, Mapperton, Bed 2c,d: Opalinum, United Kingdom

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Ammonitida - Hammatoceratidae
Planammatoceras planinsigne (Vacek 1886)
Bredyia sp.
Hammatoceras lorteti (Dumortier 1874)
Erycites barodiscus (Gemmellaro 1886)
Cephalopoda - Ammonitida - Lytoceratidae
Pachylytoceras wrighti (Buckman 1905)
Cephalopoda - Ammonitida - Hildoceratidae
Tmetoceras scissum (Benecke 1865)
Cephalopoda - Ammonitida - Graphoceratidae
Leioceras comptocostosum n. sp. Chandler and Callomon 2009
(6 measurements)
Vacekia stephensi
Gastropoda - Naticidae
Natica dundriensis
Whicher and Chandler 2009
Gastropoda - Pseudomelaniidae
Pseudomelania cf. procera
Pseudomelania lineata
Whicher and Chandler 2009
Pseudomelania procera
Whicher and Chandler 2009
Gastropoda - Discohelicidae
Discohelix dundriensis
Whicher and Chandler 2009
Discohelix pulchior
Whicher and Chandler 2009
Gastropoda - Cirridae
Cirrus leachi
Whicher and Chandler 2009
Gastropoda - Ataphridae
Ataphrus laevigatus (Sowerby 1818)
Whicher and Chandler 2009
Gastropoda - Turbinidae
Delphinula altaacanthica
Whicher and Chandler 2009
D. alta-acanthica
Gastropoda - Pleurotomariidae
Pleurotomaria (Talantodiscus) baugieri
Whicher and Chandler 2009
Pleurotomaria (Talantodiscus) mirabilis
Whicher and Chandler 2009
Pyrgotrochus punctatus (Sowerby 1821)
Perotrochus allionta
Whicher and Chandler 2009
Pleurotomaria actinomphala Eudes-Deslongchamps 1849
Whicher and Chandler 2009
Pyrgotrochus bicingulata
Whicher and Chandler 2009
Pyrgotrochus punctata
Whicher and Chandler 2009
Pyrgotrochus elongatus (Sowerby 1818)
Whicher and Chandler 2009
Bivalvia - Pholadomyida - Pholadomyidae
Pholadomya fidicula Sowerby 1826
Whicher and Chandler 2009
Bivalvia - Megalodontida - Dicerocardiidae
Pseudisocardia cordata
Whicher and Chandler 2009
Bivalvia - Pholadida - Ceratomyidae
Gresslya abducta
Ceratomya bajociana
Whicher and Chandler 2009
Bivalvia - Pholadida - Pleuromyidae
Pleuromya sp. (Meek 1873)
Pleuromya uniformis Sowerby 1813
Whicher and Chandler 2009
Bivalvia - Trigoniida - Trigoniidae
Trigonia costata
Bivalvia - Ostreida - Bakevelliidae
Gervillella sp. Waagen 1907
Gervillella intermedia
Whicher and Chandler 2009
Bivalvia - Pectinida - Limidae
Ctenostreon pectiniformis (von Schlotheim 1820)
Bivalvia - Pectinida - Entoliidae
Entolium corneolum (Young and Bird 1828)
Whicher and Chandler 2009
Bivalvia - Arcida - Cucullaeidae
Cucullaea oblonga
Whicher and Chandler 2009
Bivalvia - Mytilida - Mytilidae
Inoperna plicatus Sowerby 1819
Whicher and Chandler 2009
Gastropoda - Pleurotomariidae
Pleurotomaria fasciata
Whicher and Chandler 2009
Anthozoa - Scleractinia - Comoseridae
Chomatoseris sp. Thomas 1935
Whicher and Chandler 2009
see common names

Geography
Country:United Kingdom
Coordinates: 50.8° North, 2.7° West (view map)
Paleocoordinates:39.2° North, 8.4° East
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period: Jurassic Epoch: Middle Jurassic
Stage: Aalenian 10 m.y. bin: Jurassic 3
Key time interval: Opalinum Ammonoid zone:  Scissum
Age range of interval: 174.7 - 170.9 m.y. ago
Stratigraphy
Stratigraphic resolution:bed
Lithology and environment
Primary lithology:ferruginous,brown conglomerate
Secondary lithology:burrows,fine,ooidal lithified "limestone"
Lithology description: 2c-conglomerate, a mass of pebbles, crusts, limonitic pockets in a matrix of dense ironshot, highly ferruginous,weathering dark brown 2d-limestone, fine-grained, hard, dark grey ironshot oosparite, small to medium-sized ooliths, poorly sorted, in clouds, intensely and coarsely burrowed
Environment:shallow subtidal indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:141362
Authorizer:M. Aberhan Enterer:T. Schossleitner
Modifier:M. Clapham Research group:marine invertebrate
Created:2013-03-26 00:53:35 Last modified:2014-07-25 17:17:33
Access level:the public Released:2013-03-26 00:53:35
Creative Commons license:CC BY
Reference information

Primary reference:

45963. R. Chandler and J. Callomon. 2009. The Inferior Oolite at Coombe Quarry, near Mapperton, Dorset, and a new Middle Jurassic ammonite faunal horizon, Aa-3b, Leioceras comptocostosum n.biosp. in the Scissum Zone of the Lower Aalenian. Proceedings of the Dorset Natural History and Archaeological Society 130:99-132 [M. Aberhan/T. Schossleitner]

Secondary references:

45962 J. Whicher and R. Chandler. 2009. Inferior Oolite (Middle Jurassic) hardgrounds and the associated faunas at Coombe Quarry, Mapperton, near Beaminster, Dorset. Proceedings of the Dorset Natural History and Archaeological Society 130:149-153 [M. Aberhan/T. Schossleitner/T. Schossleitner]