LSJU Loc. 66, San Ignacio [Isidro Fm] (Miocene of Mexico)

Where: Baja California Sur, Mexico (27.0° N, 113.2° W: paleocoordinates 26.1° N, 106.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Isidro Formation, Early/Lower Miocene (23.0 - 16.0 Ma)

• STRATIGRAPHIC RELATIONS: From the Isidro Formation, for which lithostratigraphic relationships are not discussed. AGE: Lower Miocene. STRATIGRAPHIC POSITION: From unknown position in formation.

• bed-level stratigraphic resolution

Environment/lithology: marine; fine-grained, gray sandstone

• SPECIFIC LITHOLOGY: Fine-grained gray sandstone. LITHIFICATION: Unknown.

Size class: macrofossils

Collected by Hake

Collection methods: surface (in situ),

• COLLECTOR: B.F. Hake. REPOSITORY: Unknown, possibly LSJU.

Primary reference: L. G. Hertlein and E. K. Jordan. 1927. Paleontology of the Miocene of Lower California. Proceedings of the Academy of Sciences 16(19):605-647 [A. Hendy/A. Hendy/J. Marcot]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 96570: authorized by Austin Hendy, entered by Austin Hendy on 12.06.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for molluscs. NOMENCLATURE: Authoritative publication, but with antiquated nomenclature, and variable species or genus resolution identifications.
Show authors, comments, and common names
Thecostraca
 Balanomorpha - Balanidae
"Balanus aff. californicus" = Balanus tintinnabulum californicus
"Balanus aff. californicus" = Balanus tintinnabulum californicus Pilsbry 1916 barnacle
Gastropoda
 Pseudomelanoidea - Pseudomelaniidae
Crassispira starri n. sp.
Crassispira starri n. sp. Hertlein and Jordan 1927 snail
 Cerithioidea - Turritellidae
"Turritella ocoyana" = Turritella ocoyana, "Turritella bosei n. sp." = Turritella ocoyana
"Turritella ocoyana" = Turritella ocoyana Conrad 1855 turret shell
"Turritella bosei n. sp." = Turritella ocoyana Conrad 1855 turret shell
 Neotaenioglossa - Calyptraeidae
Calyptraea inornata
Calyptraea inornata Gabb 1869 slipper shell
 Sorbeoconcha - Cypraeidae
"Cypraea amandusi n. sp." = Siphocypraea amandusi
"Cypraea amandusi n. sp." = Siphocypraea amandusi Hertlein and Jordan 1927 cowry
 Neogastropoda - Muricidae
Cymia heimi n. sp., Thais wittichi n. sp.
Cymia heimi n. sp. Hertlein and Jordan 1927 murex snail
Thais wittichi n. sp. Hertlein and Jordan 1927 murex snail
 Neogastropoda - Pseudolividae
Macron hartmanni n. sp.
Macron hartmanni n. sp. Hertlein and Jordan 1927 snail
 Neogastropoda - Terebridae
Terebra burckhardti n. sp.
Terebra burckhardti n. sp. Hertlein and Jordan 1927 auger snail
 Sorbeoconcha - Naticidae
"Polinices recluzianus" = Glossaulax reclusiana
"Polinices recluzianus" = Glossaulax reclusiana Deshayes 1839 moon snail
 Trochoidea - Trochidae
Calliostoma hannibali n. sp.
Calliostoma hannibali n. sp. Hertlein and Jordan 1927 top snail
Bivalvia
 Mytilida - Mytilidae
"Mytilus cf. mathewsonii" = Crenomytilus mathewsoni
"Mytilus cf. mathewsonii" = Crenomytilus mathewsoni Gabb 1866 mussel
 Cardiida - Veneridae
"Chione richthofeni n. sp." = Chione (Chionopsis) richthofeni, Amiantis cf. communis, Saxidomus cf. vaquerosensis
"Chione richthofeni n. sp." = Chione (Chionopsis) richthofeni Hertlein and Jordan 1927 venus clam
Amiantis cf. communis Nomland 1917 venus clam
Saxidomus cf. vaquerosensis Arnold 1909 venus clam
 Cardiida - Tellinidae
"Metis alta" = Leporimetis obesa
"Metis alta" = Leporimetis obesa Deshayes 1855 tellin clam
 Cardiida - Psammobiidae
"Sanguinolaria toulai n. sp." = Nuttallia toulai
"Sanguinolaria toulai n. sp." = Nuttallia toulai Hertlein and Jordan 1927 clam
Echinoidea
 Clypeasteroida - Echinarachniidae
"Scutella norrisi" = Vaquerosella coreyi
"Scutella norrisi" = Vaquerosella coreyi Durham 1955 sand dollar