Where: Merida, Venezuela (8.0° N, 71.4° W: paleocoordinates 5.5° S, 34.5° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Palmarito Formation, Kungurian (279.3 - 272.3 Ma)
• Several exotic blocks. Palmarito Fm contains Perrinites hilli and Parafusulina of Kungurian age.
• group of beds-level stratigraphic resolution
Environment/lithology: open shallow subtidal; shelly/skeletal, gray, silty packstone and gray, calcareous siltstone
Size class: macrofossils
Preservation: replaced with silica
Collection methods: bulk, chemical, mechanical,
• Prepared by HCl etching, dried silt removed by air abrasion. Hustedia and Composita rare in calcareous siltstone, interpreted as generalist early colonizers.
Primary reference: P.R. Hoover. 1981. Paleontology, Taphonomy, and Paleoecology of the Palmarito Formation (Permian of Venezuela). Bulletins of American Paleontology 80(313):1-138 [D. Bottjer/M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 41516: authorized by David Bottjer, entered by Matthew Clapham on 15.07.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Crinoidea | |
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Polyplacophora | |
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Cephalopoda | |
"cf. Mooreoceras sp." = Pseudorthoceras
"cf. Mooreoceras sp." = Pseudorthoceras Girty 1912 | |
Gastropoda | |
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"Straparollus (Euomphalus) aff. kaibabensis" = Euomphalus kaibabensis, Cylicioscapha sp.
"Straparollus (Euomphalus) aff. kaibabensis" = Euomphalus kaibabensis Chronic 1952 snail
Cylicioscapha sp. Yochelson 1956 snail | |
Glyptospira sp. Chronic 1952 snail | |
Anomphalus sp. Meek and Worthen 1866 snail | |
Orthonema sp. Meek and Worthen 1862 snail
Taosia sp. Girty 1939 snail | |
? Meekospira sp. Ulrich and Scofield 1897 snail | |
Kinishbia sp. Winters 1956 snail | |
"Pleurotomariacea indet." = Pleurotomarioidea
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Apachella sp. Winters 1956 snail
Apachella aff. franciscana Chronic 1952 snail
Glyptotomaria sp. Knight 1945 snail | |
"Colpites" sp. Knight 1936 snail | |
Bivalvia | |
Nuculopsis sp. Girty 1912 nut clam | |
Sanguinolites sp. M'Coy 1844 clam | |
Pseudopermophorus sp. Ciriacks 1963 clam | |
Astartella sp. Hall 1858 clam | |
Aviculopecten sp. M'Coy 1851 scallop | |
Pseudomonotis sp. von Beyrich 1862 scallop
Pegmavalvula cf. gloveri Newell and Boyd 1970 scallop | |
Guizhoupecten sp. Chen 1962 scallop
Streblochondria sp. Newell 1938 scallop | |
Parallelodon sp. Meek and Worthen 1866 clam | |
Rhynchonellata | |
Pontisia stehlii Cooper and Grant 1969 | |
Composita cf. pilula Cooper and Grant 1976 | |
Hustedia hyporhachis Hoover 1981 | |
? Texarina cf. wordensis King 1931 | |
Strophomenata | |
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Rugatia intermedia Hoover 1981
Echinauris cf. lappacea Cooper and Grant 1975
"Kutorginella cf. umbonata" = Retaria umbonata Muir-Wood and Cooper 1960 | |
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? Holotricharina "sp. A" Cooper and Grant 1975 | |
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Derbyia cf. filosa Cooper and Grant 1974 | |
Meekella skenoides Girty 1908 | |
Bryozoa | |
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Stenolaemata | |
"Fenestrida indet." = Fenestelloidea
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Anthozoa | |
Lophophyllidium sp. Grabau 1928 horn coral | |
Heteractinida | |
Wewokella solida Girty 1911 | |
Hexactinellida | |
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Demospongiae | |
? Amblysiphonella sp. Steinmann 1882 demosponge | |
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