DV 1254-3-11, DV 1628 (Unit III+IV) [Huacllaco beds] (Pliocene of Peru)

Where: Peru (15.9° S, 74.2° W: paleocoordinates 16.0° S, 73.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Huacllaco Formation, Late/Upper Pliocene (3.6 - 2.6 Ma)

• STRATIGRAPHIC RELATIONS: From the "Huacllaco beds", for which lithostratigraphic relations are not discussed. AGE: Late Pliocene, as overlies beds with early Late Pliocene index molluscs and itself contains index taxa of latest Pliocene age. STRATIGRAPHIC POSITION: From units III and IV in upper part of section.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; unlithified sandstone

• SPECIFIC LITHOLOGY: Not stated, but apparently siliciclastic (coarse). LITHIFICATION: Unlithified based on figured specimens.

Size class: macrofossils

Collected by DeVries; reposited in the UWBM

• COLLECTOR: DeVries. REPOSITORY: UWBM, Washington.

Primary reference: T. J. DeVries. 2005. Pterorytis pacanana new species (Gastropoda: Muricidae): circumstantial evidence for late Pliocene El Niño events in southern Peru. The Nautilus 119(4):164-168 [A. Hendy/A. Hendy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 80406: authorized by Austin Hendy, entered by Austin Hendy on 18.04.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for gastropoda and bivalvia. NOMENCLATURE: Authoritative publication, with modern nomenclature, subgenus and species-resolution taxonomic assignments.
Gastropoda
 Trochoidea - Turbinidae
Prisogaster niger Wood 1828 snail
Prisogaster valenciai1 DeVries 2006 snail
 Trochoidea - Trochidae
Chlorostoma quipua2 DeVries 2007 top snail
Priscoacritia sp. DeVries and Hess 2004 top snail
 Lepetellida - Fissurellidae
Fissurella (Fissurella) crassa3 Lamarck 1822 snail
Fissurella (Fissurella) concolor3 Philippi 1867 snail
Fissurella (Fissurella) limbata3 Sowerby 1835 snail
Fissurella (Fissurella) maxima3 Sowerby 1835 snail
 Neotaenioglossa - Calyptraeidae
"Crepidula dilatata" = Crepipatella dilatata
"Crepidula dilatata" = Crepipatella dilatata Lamarck 1822 slipper shell
 Neogastropoda - Olividae
Oliva peruviana Lamarck 1811 olive snail
 Neogastropoda - Muricidae
Concholepas camerata DeVries 2000 murex snail
Concholepas concholepas Bruguiére 1789 murex snail
Acanthina unicornis Bruguiére 1789 unicorn
Crassilabrum crassilabrum Sowerby 1834 murex snail
Xanthochorus cassidiformis Blainville 1832 murex snail
 Neogastropoda - Cancellariidae
Cancellaria buccinoides Sowerby 1832 snail
 Sorbeoconcha - Naticidae
Sinum cumba moon snail
Bivalvia
 Arcida - Glycymerididae
Glycymeris ovata Stanton 1895 clam
 Mytilida - Mytilidae
Choromytilus chorus Molina 1782 mussel
 Cardiida - Veneridae
Eurhomalea lenticularis Broderip and Sowerby 1835 venus clam
 Cardiida - Mesodesmatidae
 Cardiida - Mactridae
Mulinia edulis King 1831 clam