BPW80-16, San Hipolito Fm, Vizcaino Peninsula, Baja California Sur (Jurassic of Mexico)

Where: Baja California Sur, Mexico (26.0° N, 111.0° W: paleocoordinates 12.3° N, 53.2° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: San Hipolito Formation, Pliensbachian (190.8 - 182.7 Ma)

• bed-level stratigraphic resolution

Environment/lithology: slope; tuffaceous, brown, gray, green sandstone and concretionary lime mudstone

• thin to medium-bedded, poorly sorted, olive grey to light greenish brown, tuffaceous sandstone interbedded with silty and chrty tuffs and silty, tuffaceous, light grey limestone; sample from calcareous cannonball concretion

Size class: microfossils

Preservation: original silica

Primary reference: P. A. Whalen and E.S. Carter. 2002. Pliensbachian (Lower Jurassic) Radiolaria from Baja California Sur, Mexico. Micropaleontology 48(2):97-151 [A. Miller/K. Layou/K. Layou]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 33563: authorized by Arnold Miller, entered by Karen Layou on 03.08.2003, edited by Adam Kocsis

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Protozoa
 Spumellaria -
"? Pseudocrucella baroni" = Beatricea baroni
"? Pseudocrucella baroni" = Beatricea baroni Cordey 1998 radiolarian
 Spumellaria - Hagiastridae
? Crucella "sp. A" Pessagno 1971 radiolarian
 Spumellaria - Patulibracchiidae
Homoeoparonaella lowryensis Whalen and Carter 2002 radiolarian
 Spumellaria - Angulobracchiidae
Cyclastrum scammonense Whalen and Carter 2002 radiolarian
Cyclastrum veracruzense Whalen and Carter 2002 radiolarian
Cyclastrum asuncionense Whalen and Carter 2002 radiolarian
Paronaella grahamensis Carter 1988 radiolarian
radiolarian species
 Spumellaria - Orbiculiformidae
Orbiculiformella "sp. B" Kozur and Mostler 1978 radiolarian
sensu Yeh
 Entactinaria - Eptingiidae
Charlottea "sp. A" Carter et al. 1998 radiolarian
 Entactinaria - Saturnalidae
Palaeosaturnalis aff. liassicus2 Kozur and Mostler 1990 radiolarian
Pseudoheliodiscus aff. alpinus Kozur and Mostler 1990 radiolarian
Praehexasaturnalis tetraradiatus Kozur and Mostler 1990 radiolarian
 Nassellaria -
Nassellaria indet. Ehrenberg 1875 radiolarian
 Nassellaria - Syringocapsidae
Katroma "sp. A" Pessagno and Poisson 1981 radiolarian
Katroma angusta Yeh 1987 radiolarian
Katroma clara Yeh 1987 radiolarian
 Nassellaria - Deflandrecyrtiidae
Haeckelicyrtium "sp. B" Kozur and Mostler 1979 radiolarian
 Nassellaria - Hilarisiregidae
"Rolumbus gastili" = Diceratigalea gastili
"Rolumbus gastili" = Diceratigalea gastili Pessagno et al. 1986 radiolarian
 Nassellaria - Bagotidae
Bagotum funiculum Whalen and Carter 2002 radiolarian
 Nassellaria - Hsuidae
Parahsuum simplum Yao 1982 radiolarian
 Nassellaria - Eucyrtidiidae
Pseudoeucyrtis angusta Carter et al. 1998 radiolarian