USGS Loc. 20001 - ridge between Candelaria and Río Ciruelas: Early/Lower Miocene - Late/Upper Miocene, Costa Rica
collected by Malavassi 1957

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Maxillopoda - Sessilia - Balanidae
Balanus sp. Da Costa 1778
Woodring and Malavassi V 1961
Bivalvia - Pectinida - Pectinidae
? Lyropecten (? Nodipecten) cf. nodosus (Linnaeus 1758)
Woodring and Malavassi V 1961
recombined as Nodipecten nodosus
Pecten (Flabellipecten) gatunensis Toula 1909
Woodring and Malavassi V 1961
recombined as Leopecten gatunensis
subsp. gatunensis
Aequipecten aff. plurinominis (Pilsbry and Johnson 1917)
Woodring and Malavassi V 1961
recombined as Lindapecten plurinominis
Gastropoda - Tonnidae
Malea aff. elliptica Pilsbry and Johnston 1917
Woodring and Malavassi V 1961
Gastropoda - Cassidae
Cypraecassis cf. tenuis (Wood 1828)
Woodring and Malavassi V 1961
Gastropoda - Sorbeoconcha - Turritellidae
Turritella (Torcula) altilira (Conrad 1857)
Woodring and Malavassi V 1961
subsp.
Gastropoda - Architectonicidae
Architectonica (Architectonica) nobilis (Röding 1798)
Woodring and Malavassi V 1961
original and current combination Architectonica nobilis
subsp. nobilis
Echinoidea - Spatangoida
Schizobrissus kewi n. sp. Durham 1961
1 specimen
Echinoidea - Spatangoida - Paleopneustidae
Pericosmus israelskyi n. sp. Durham 1961
1 specimen
Echinoidea - Spatangoida - Schizasteridae
Schizaster costaricensis n. sp. Durham 1961
10 specimens
Echinoidea - Spatangoida - Brissidae
Plagiobrissus costaricensis n. sp. Durham 1961
1 specimen
Plagiobrissus malavassii n. sp. Durham 1961
2 specimens
Brissopsis sp. Agassiz 1840
1 specimen
Echinoidea - Echinolampadoida - Echinolampadidae
Echinolampas woodringi n. sp. Durham 1961
3 specimens
Echinoidea - Clypeasteroida - Clypeasteridae
Clypeaster sp. Lamarck 1801
2 specimens
see common names

Geography
Country:Costa Rica
Coordinates: 10.0° North, 84.3° West (view map)
Paleocoordinates:9.5° North, 82.5° West
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period:Neogene Epoch:Miocene
Key time interval:Early/Lower Miocene - Late/Upper Miocene
Age range of interval:23.03000 - 5.33300 m.y. ago
Stratigraphy
Stratigraphic resolution:bed
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From unnamed lithostratigraphic unit. AGE: Early-Late Miocene, based on correlation of echinoid faunas with other assemblages; appears similar in age to Mesón and Tuxpan Fms of Mesico and the Ojo de Agua Fm of Venezuela. STRATIGRAPHIC POSITION: From unknown position within section.
Lithology and environment
Primary lithology: poorly lithified "siliciclastic"
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Not stated in text. LITHIFICATION: Poorly lithified, on the basis of figured specimens.
Environment:offshore
Geology comments: ENVIRONMENT: Probably accumulated in 100-300 m water depth.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:surface (in situ),field collection
Reason for describing collection:taxonomic analysis
Museum repositories:USNM
Collectors:Malavassi Collection dates:1957
Collection method comments: COLLECTOR: E. Malavassi V, 1957. REPOSITORY: USNM.
Taxonomic list comments:COVERAGE: Exhaustive for echinoids. Molluscs not reported but are almost certainly present. NOMENCLATURE: Authoritative publication, with somewhat antiquated nomenclature, but with species-resolution identifications.
Metadata
Database number:92098
Authorizer:A. Hendy, N. Bonuso Enterer:A. Hendy, P. Monarrez
Research group:marine invertebrate
Created:2009-10-29 18:21:16 Last modified:2013-11-25 13:37:23
Access level:the public Released:2009-10-29 18:21:16
Creative Commons license:CC BY
Reference information

Primary reference:

31012. J. W. Durham. 1961. Miocene echinoids from the Valle Central, Costa Rica. Journal of Paleontology 35(3):480-488 [A. Hendy/A. Hendy]

Secondary references:

46416 W. P. Woodring and E. Malavassi V. 1961. Miocene Foraminifera, Mollusks, and a Barnacle from the Valle Central, Costa Rica. Journal of Paleontology 35(3):489-497 [N. Bonuso/P. Monarrez]