Sidi Abderrahmane Layer J: Middle Pleistocene, Morocco

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Calyptra chinensis
Calyptra sp.
Donovania sp.
Scaphopoda - Dentaliida - Dentaliidae
Dentalium sp. Linnaeus 1758
Bivalvia - Mytilida - Mytilidae
Mytilus edulis Linnaeus 1758
Mytilus galloprovincialis Lamarck 1819
Bivalvia - Arcida - Glycymerididae
Pectunculus glycimeris
synonym of Glycymeris
Bivalvia - Arcida - Cucullaeidae
Arca tetragona Poli 1795
recombined as Tetrarca tetragona
Bivalvia - Arcida - Arcidae
Arca (Fossularca) lactea Linnaeus 1767
Bivalvia - Pectinida - Pectinidae
Pecten jacobaeus
Chlamys varia (Linnaeus 1758)
recombined as Chlamys (Chlamys) varia
Bivalvia - Pectinida - Limidae
Lima subauriculata (Montagu 1808)
Bivalvia - Carditida - Carditidae
Cardita calyculata (Linnaeus 1758)
recombined as Cardita (Cardita) calyculata
Bivalvia - Cardiida - Cardiidae
Cardium (Laevicardium) norvegium
original and current combination Laevicardium
Cardium (Parvicardium) exiguum Gmelin 1791
recombined as Parvicardium exiguum
Bivalvia - Cardiida - Tellinidae
Tellina pulchella Lamarck 1818
Cephalopoda - Spirulida - Spirulidae
Spirula spirula
Gastropoda - Lepetellida - Fissurellidae
Fissurella reticulata
Fissurella nubecula
Fissurella gibberula Lamarck 1822
recombined as Diodora gibberula
Gastropoda - Trochidae
Trochus (Calliostoma) granulatim
Solarium fallaciosum
spelled with current rank as Trochus (Solarium)
Gastropoda - Phasianellidae
Phasianella pullus
Gastropoda - Heterostropha - Pyramidellidae
Turbonilla lactea
Gastropoda - Heterostropha - Ellobiidae
Melampus pyramidalis Sowerby 1822
recombined as Ellobium pyramidale
Gastropoda - Patellidae
Patella lusitanica
Patella vulgata Linnaeus 1758
Patella intermedia Murray 1857
Gastropoda - Epitoniidae
Scala communis
spelled with current rank as Epitonium (Scala)
Scala crenata
spelled with current rank as Epitonium (Scala)
Gastropoda - Planaxidae
Fossarus costatus
Fossarus ambiguus (Linnaeus 1758)
Gastropoda - Cerithiidae
Bittium latreillei
Bittium reticulatum (da Costa 1778)
Gastropoda - Turritellidae
Turritella (Haustator) triplicata
spelled with current rank as Haustator
Turritella decipiens
Turritella communis Risso 1826
Gastropoda - Littorinidae
Littorina littorea
Littorina obtusata (Linnaeus 1758)
subspecies "L. obtusata littoralis"
Littorina saxatilis (Olivi 1792)
subspecies "L. saxatilis var. rudissima"
Littorina (Melaraphe) neritoides (Linnaeus 1758)
Gastropoda - Naticidae
Natica marochiensis (Gmelin 1791)
Gastropoda - Rissoidae
Rissoa (Alvania) lineata
original and current combination Alvania
Rissoa (Alvania) cancellata (da Costa 1778)
Gastropoda - Vermetidae
Vermetus granulatus
Vermetus triqueter
Gastropoda - Triviidae
Trivia europaea (Montfort 1808)
recombined as Trivia (Trivia) europaea
Gastropoda - Neogastropoda - Columbellidae
Columbella (Mitrella) gervillei
original and current combination Mitrella
Gastropoda - Neogastropoda - Buccinidae
Nassa reticulata
Nassa vaucheri
subspecies "N. vaucheri var. min"
Nassa ferussaci
Nassa pygmea
Nassa (Amycla) pfeifferi
Chauvetia candida
Chauvetia pellisphocae
Gastropoda - Neogastropoda - Nassariidae
Nassa (Arcularia) gibbosula
spelled with current rank as Nassarius (Arcularia)
Nassa (Arcularia) circumcincta
spelled with current rank as Nassarius (Arcularia)
Nassa (Arcularia) granum
spelled with current rank as Nassarius (Arcularia)
Nassa incrassata (Müller 1773)
recombined as Nassarius incrassatus
subspecies "N. incrassata var. senegalensis"
Fusus sp. Bruguière 1789
Gastropoda - Neogastropoda - Mangeliidae
Mangelia nebula (Montagu 1803)
Gastropoda - Neogastropoda - Marginellidae
Marginella oryza
Marginella epigrus
Marginella carneola
Marginella olivaeformis
Gastropoda - Neogastropoda - Muricidae
Murex (Tritonalia) decussata
Murex (Tritonalia) corallina
Murex (Tritonalia) aciculata
Murex (Tritonalia) pallaryi
Purpura (Acanthina) crassilabrum Sowerby 1834
recombined as Crassilabrum crassilabrum
subspecies "P. (Acanthina) crassilabrum var. costata"
Purpura lapillus (Linnaeus 1758)
recombined as Nucella lapillus
Gastropoda - Aporrhaidae
Aporrhais sp. da Costa 1778
Gastropoda - Ranellidae
Cymatium cutaceum (Lamarck 1816)
synonym of Linatella caudata
Cymatium nodiferum
Cymatium corrugatim
Gastropoda - Triphoridae
Triphora perversa (Linnaeus 1758)
Gastropoda - Neotaenioglossa - Calyptraeidae
Calyptra (Trochatella) trochiformis (Gmelin 1791)
recombined as Calyptraea (Trochita) trochiformis
Crepidula sulin
Thecostraca - Balanomorpha - Balanidae
Balanus crenatus Bruguière 1789
Malacostraca - Decapoda - Carcinidae
Carcinus moenas
see common names

Geography
Country:Morocco
Coordinates: 32.3° North, 9.3° West (view map)
Paleocoordinates:32.3° North, 9.2° West
Basis of coordinate:estimated from map
Geographic resolution:local area
Time
Period:Quaternary Epoch:Pleistocene
Stage:Chibanian 10 m.y. bin:Cenozoic 6
Key time interval:Middle Pleistocene
Age range of interval:0.77400 - 0.12900 m.y. ago
Age estimate:0.5 Ma (unknown)
Stratigraphy
Stratigraphic resolution:bed
Stratigraphy comments: layer J; Tyrrhenian
It seems from Texier et al., 2002 (Quaternaire vol. 13) that this level was subsequently destroyed by continued quarry excavation. My interpretation from this publication and Roberts et al. 2006 (in Quat. Science Reviews) is that layer J is around or older than 500,000 yrs old. Occhietti et al (2002; Quaternaire) performed amino acid racemization on Patella from museum collections of layer J, and while these analyses yielded very low concentrations, they suggest this layer is Stage 15. Stearns (1978; GSA Bulletin) correlates to Stage 17.
Lithology and environment
Primary lithology: grainstone
Lithology description: From Stearns (1978; GSA Bulletin): calcarenite and coquina
Environment:coastal indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Metadata
Database number:127581
Authorizer:J. Sessa Enterer:J. Sessa
Modifier:B. Allen Research group:marine invertebrate
Created:2012-05-18 07:12:44 Last modified:2023-07-28 07:17:39
Access level:authorizer only Released:2014-05-18 07:12:44
Creative Commons license:CC BY
Reference information

Primary reference:
41616. G. Lecointre. 1952. Recherches sur le Neogene et le Quaternaire marins de la cote Atlantique du Maroc. Publications du Service geologique du Maroc 99(1,2):1-174 [J. Sessa/J. Sessa/S. Ávila]