Hannatoma F: Sandy Shales Fm: San Antonio, Venezuela (Kehrer) (Eocene of Venezuela)

Where: Venezuela (8.1° N, 72.3° W: paleocoordinates 5.8° N, 65.6° W)

• coordinate based on nearby landmark

When: Lower Sandy Shales Formation, Late/Upper Eocene (37.2 - 33.9 Ma)

Environment/lithology: marine; lithified limestone and shelly/skeletal lime mudstone

• The formation mainly consists of nonmarine or lacustrine sediments such as sandstones, clays, shales, and interbedded lignitic coal seams. There are four fossiliferous limestones within the formation. This fossil collection is of the third limestone from the bottom up.

Size class: macrofossils

Collection methods: The region was mapped by W.G.C. Tomalin of Shell and fossils were identified by W.P. Woodring.

Primary reference: J. W. Durham, A.N. Dusenbury, Jr, H.D. Hedberg, L. Kehrer, J.G. Marks, R.M. Stainforth, and B. Stone. 1949. The age of the Hannatoma mollusk fauna of South America; a symposium. Journal of Paleontology 23(2):145-160 [L. Ivany/C. Visaggi/C. Visaggi]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 42792: authorized by Linda Ivany, entered by Christy Visaggi on 05.08.2004, edited by Austin Hendy

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
"Noetid" indet.
Gastropoda
 Cerithioidea - Turritellidae
Turritella aff. samanensis
Turritella aff. samanensis Olsson 1928 turret shell
 Cerithioidea - Potamididae
Harrisianella cf. peruviana
Harrisianella cf. peruviana Olsson 1929 horn snail
 Sorbeoconcha - Triforidae
Cerithiella sp.
Cerithiella sp. Verrill 1882 snail
 Neogastropoda - Melongenidae
"Cornulina" cf. levifusoides
 Neogastropoda - Turridae
Turridae indet.
Turridae indet. Swainson 1840 turrid
 Sorbeoconcha - Naticidae
Neverita ? sp.
Neverita ? sp. Risso 1826 moon snail
 Opisthobranchia - Cylichnidae
Abderospira ? sp.
Abderospira ? sp. Dall 1896 snail
Bivalvia
 Lucinida - Lucinidae
? Lucina sp.
? Lucina sp. Bruguière 1797 clam
 Pholadida - Corbulidae
Corbula sp.
Corbula sp. Bruguière 1789 clam
 Pholadida - Raetomyidae
Raetomya ? sp.
Raetomya ? sp. Newton 1919 clam
 Cardiida - Veneridae
Pitar sp., "Clementia dariena" = Clementia (Clementia) dariena
Pitar sp. Römer 1857 venus clam
"Clementia dariena" = Clementia (Clementia) dariena Conrad 1855 venus clam
Clementia dariena vetula
 Cardiida - Mactridae
Spisula sp.
Spisula sp. Gray 1837 clam
 Cardiida - Tellinidae
Tellina ? sp.
Tellina ? sp. Linnaeus 1758 tellin clam
 Pectinida - Anomiidae
Anomia ? sp.
Anomia ? sp. Linnaeus 1758 jingle