Basal Heath or Caleto Mero Shales (Oligocene of Peru)

Where: Piura, Peru (5.0° S, 80.0° W: paleocoordinates 6.8° S, 74.6° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Heath Formation, Late/Upper Oligocene (28.4 - 23.0 Ma)

• basal Heath, or Caleto Mero shales

•70% of species in list are restricted to this horizon

•base of late Oligocene

• bed-level stratigraphic resolution

Environment/lithology: shoreface; sandstone and shale

• species belong to a small fauna of shallow water affinity that followed near the advancing shore line of the early Heath Sea
• narrow transitional zone between Heath Fm shales and Punta Bravo Grits - thin sandstones and shales, rocks generally fossiliferous

Primary reference: A. A. Olsson. 1931. Contributions to the Tertiary Paleontology of Northern Peru: Part 4, The Peruvian Oligocene. Bulletins of American Paleontology 17(63) [L. Ivany/L. Ivany]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 64559: authorized by Linda Ivany, entered by Linda Ivany on 10.09.2006, edited by Mihaela Krause

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Neotaenioglossa - Calyptraeidae
Crepidula sp. Lamarck 1799 slipper shell
 Cerithioidea - Turritellidae
Turritella hubbardi Hodson 1926 turret shell
Turritella meroensis n. sp. Olsson 1931 turret shell
Turritella caleta n. sp. Olsson 1931 turret shell
Turritella conquistadorana Hanna and Israelsky 1925 turret shell
 Neogastropoda - Pseudolividae
"Pseudoliva parinasensis" = Pseudoliva (Buccinorbis) parinasensis
"Pseudoliva parinasensis" = Pseudoliva (Buccinorbis) parinasensis Woods 1922 snail
var. mancorensis
 Neogastropoda - Thaisidae
Acanthina (Chorus) meroensis n. sp., "Acanthina (Chorus) sula n. sp." = Chorus sula
Acanthina (Chorus) meroensis n. sp. Olsson 1931 snail
"Acanthina (Chorus) sula n. sp." = Chorus sula Olsson 1931 snail
 Neogastropoda - Volutidae
"Voluta (Peruluta) mancorensis" = Peruluta mancorensis
"Voluta (Peruluta) mancorensis" = Peruluta mancorensis Olsson 1928 volute
 Sorbeoconcha - Ficidae
Ficus woodringi n. sp. Olsson 1931 fig shell
 Sorbeoconcha - Bursidae
Bursa sp. Roding 1798 frog shell
 Sorbeoconcha - Naticidae
Sinum multilineatum moon snail
var. peruvianum
 Heterostropha - Architectonicidae
Architectonica sullana Olsson 1928 sundial
Bivalvia
 Arcida - Arcidae
Barbatia sp. Gray 1842 clam
Arca (Scapharca) meroensis n. sp. Olsson 1931 clam
 Cardiida - Veneridae
Callista (Costacallista) mancorensis, "Clementia peruviana" = Clementia (Egesta) peruviana, "Chione posorjensis n. sp." = Chione (Chionopsis) posorjensis, "Dosinia (Dosinidia) palmeriae n. sp." = Dosinia
"Clementia peruviana" = Clementia (Egesta) peruviana Olsson 1928 venus clam
"Chione posorjensis n. sp." = Chione (Chionopsis) posorjensis Olsson 1931 venus clam
"Dosinia (Dosinidia) palmeriae n. sp." = Dosinia venus clam
 Cardiida - Mactridae
"Mactra (Mactrella) tumbezia n. sp." = Mactrellona tumbezia
"Mactra (Mactrella) tumbezia n. sp." = Mactrellona tumbezia Olsson 1921 clam
 Cardiida - Solecurtidae
Tagelus sp. Gray 1847 clam
 Cardiida - Tellinidae
Macoma meroensis n. sp. Olsson 1931 tellin clam
 Carditida - Crassatellidae
Hybolophus disenum Devries 2016 clam
 Nuculanida - Nuculanidae
"Leda (Adrana) sp." = Adrana
"Leda (Adrana) sp." = Adrana Adams and Adams 1858 pointed nut clam