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.
Cephalopoda - Spirulida - Spirulidae
Spirula spirula
Gastropoda - Trochidae
Trochus (Calliostoma) granulatim
Solarium fallaciosum
spelled with current rank as Trochus (Solarium)
Gastropoda - Phasianellidae
Phasianella pullus
Gastropoda - Lepetellida - Fissurellidae
Fissurella gibberula Lamarck 1822
recombined as Diodora gibberula
Fissurella reticulata
Fissurella nubecula
Gastropoda - Patellidae
Patella lusitanica
Patella vulgata Linnaeus 1758
Patella intermedia Murray 1857
Gastropoda - Heterostropha - Pyramidellidae
Turbonilla lactea
Gastropoda - Heterostropha - Ellobiidae
Melampus pyramidalis Sowerby 1822
recombined as Ellobium pyramidale
Gastropoda - Epitoniidae
Scala communis
spelled with current rank as Epitonium (Scala)
Scala crenata
spelled with current rank as Epitonium (Scala)
Gastropoda - Neotaenioglossa - Calyptraeidae
Crepidula sulin
Calyptra (Trochatella) trochiformis (Gmelin 1791)
recombined as Calyptraea (Trochita) trochiformis
Gastropoda - Triphoridae
Triphora perversa (Linnaeus 1758)
Gastropoda - Littorinidae
Littorina littorea
Littorina obtusata (Linnaeus 1758)
subspecies "L. obtusata littoralis"
Littorina (Melaraphe) neritoides (Linnaeus 1758)
Littorina saxatilis (Olivi 1792)
subspecies "L. saxatilis var. rudissima"
Gastropoda - Naticidae
Natica marochiensis (Gmelin 1791)
Gastropoda - Neogastropoda - Mangeliidae
Mangelia nebula (Montagu 1803)
Gastropoda - Neogastropoda - Nassariidae
Nassa incrassata (Müller 1773)
recombined as Nassarius incrassatus
subspecies "N. incrassata var. senegalensis"
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)
Fusus sp. Bruguière 1789
Gastropoda - Neogastropoda - Buccinidae
Chauvetia candida
Chauvetia pellisphocae
Nassa reticulata
Nassa vaucheri
subspecies "N. vaucheri var. min"
Nassa ferussaci
Nassa pygmea
Nassa (Amycla) pfeifferi
Gastropoda - Neogastropoda - Columbellidae
Columbella (Mitrella) gervillei
original and current combination Mitrella
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 - Triviidae
Trivia europaea (Montfort 1808)
recombined as Trivia (Trivia) europaea
Gastropoda - Ranellidae
Cymatium cutaceum (Lamarck 1816)
synonym of Linatella caudata
Cymatium nodiferum
Cymatium corrugatim
Gastropoda - Rissoidae
Rissoa (Alvania) lineata
original and current combination Alvania
Rissoa (Alvania) cancellata (da Costa 1778)
Gastropoda - Vermetidae
Vermetus granulatus
Vermetus triqueter
Gastropoda - Turritellidae
Turritella (Haustator) triplicata
spelled with current rank as Haustator
Turritella decipiens
Turritella communis Risso 1826
Gastropoda - Cerithiidae
Bittium latreillei
Bittium reticulatum (da Costa 1778)
Gastropoda - Planaxidae
Fossarus costatus
Fossarus ambiguus (Linnaeus 1758)
Scaphopoda - Dentaliida - Dentaliidae
Dentalium sp. Linnaeus 1758
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 - Limidae
Lima subauriculata (Montagu 1808)
Bivalvia - Pectinida - Pectinidae
Pecten jacobaeus
Chlamys varia (Linnaeus 1758)
recombined as Chlamys (Chlamys) varia
Bivalvia - Mytilida - Mytilidae
Mytilus edulis Linnaeus 1758
Mytilus galloprovincialis Lamarck 1819
Bivalvia - Cardiida - Cardiidae
Cardium (Parvicardium) exiguum Gmelin 1791
recombined as Parvicardium exiguum
Cardium (Laevicardium) norvegium
original and current combination Laevicardium
Bivalvia - Cardiida - Tellinidae
Tellina pulchella Lamarck 1818
Bivalvia - Carditida - Carditidae
Cardita calyculata (Linnaeus 1758)
recombined as Cardita (Cardita) calyculata
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]