USGS M8764, Sierra Azul (Cretaceous of the United States)

Also known as 90E-21

Where: Santa Clara County, California (37.1° N, 121.9° W: paleocoordinates 43.4° N, 91.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Middle Campanian (83.5 - 70.6 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified lithology not reported

Size class: macrofossils

Collected by W.P. Elder in 1990; reposited in the USGS

Primary reference: W. P. Elder and J. W. Miller. 1993. Map and checklists of Jurassic and Cretaceous macrofossil localities within the San Jose 1:100,000 Quadrangle, California, and discussion of paleontological results. United States Geological Survey Open-File Report 93-503:1-49 [M. Clapham/M. Clapham]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 185368: authorized by Matthew Clapham, entered by Matthew Clapham on 19.04.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Polychaeta
 Sabellida - Serpulidae
Serpulidae indet. Rafinesque 1835
Bivalvia
 Arcida - Arcidae
Barbatia sp. Gray 1842 clam
 Arcida - Glycymerididae
Glycymeris (Glycymeris) cf. apletos Dailey and Popenoe 1966 clam
 Myalinida - Inoceramidae
Inoceramidae indet. Giebel 1852 clam
 Pectinida - Pectinoidae
? Spondylus sp. Linnaeus 1758 scallop
Camptonectes sp. Meek 1864 scallop
 Pectinida - Limidae
Lima "n. sp. A" Bruguière 1797 file clam
Acesta sp. Adams and Adams 1858 file clam
 Ostreida - Gryphaeidae
 Ostreida - Malleidae
Isognomon sp. Lightfoot 1786 oyster
 Mytilida - Crenellidae
aff. Musculus sp. Roding 1798 mussel
 Mytilida - Mytilidae
Mytilus sp. Linnaeus 1758 mussel
Mytilus cf. pauperculus Gabb 1864 mussel
 Carditida - Crassatellidae
Crassatella sp. Lamarck 1799 clam
 Cardiida - Mactridae
Cymbophora popenoei Saul 1974 clam
Cymbophora triangulata Waring 1917 clam
 Cardiida - Tancrediidae
Meekia (Mygallia) bella Saul and Popenoe 1962 clam
Gastropoda
 Patellogastropoda -
Patellogastropoda indet. Lindberg 1986 limpet
 Stromboidea - Aporrhaidae
? Aporrhaidae indet. Gray 1850 snail
 Vanikoroidea - Hipponicidae
 Naticoidea - Naticidae
Naticidae indet. Guilding 1834 moon snail
 Calyptraeoidea - Trichotropidae
"Lysis cf. intermedia" = Garzasia intermedia
"Lysis cf. intermedia" = Garzasia intermedia Cooper 1894 snail
 Sorbeoconcha - Cerithiidae
Cerithiidae indet. Fleming 1822 cerith snail
 Heterostropha - Ringiculidae
Biplica sp. Popenoe 1957 snail
 Basommatophora - Siphonariidae
? Anisomyon sp. Meek and Hayden 1860 pulmonate
 Architectonicoidea - Architectonicidae
? Architectonica sp. Röding 1798 sundial
 Seguenzioidea - Calliotropidae
? Calliomphalus sp. Cossmann 1888 snail
Cephalopoda
 Ammonitida - Baculitidae
Baculites sp. Lamarck 1799 ammonite
Echinoidea
 Cidaroida -
Cidaroida indet. Claus 1880 pencil urchin
Crinoidea
 Isocrinida - Isocrinidae
Isocrinus sp. Meyer in Agassiz 1836 Sea lily
Demospongea
 Clavulina - Clionaidae
Entobia sp. Bronn 1838 demosponge
Calcarea
  -
Calcarea indet. Bowerbank 1864 calcareous sponge