Pisocrinus-Abyssocrinus antiquus Assoc., Henryhouse Fm., White Mound (Silurian to of the United States)
Where: Oklahoma (34.4° N, 97.0° W: paleocoordinates 28.2° S, 60.0° W)
• coordinate based on nearby landmark
• local area-level geographic resolution
When: Upper Member (Henryhouse Formation), Ludfordian to Ludfordian (425.6 - 419.2 Ma)
• Upper Henryhouse, assigned age range of Ludlow-Pridoli by authors. Collection comes from beds "approximately 3 m [in total thickness] beginning 5 m below Haragan contact"
• group of beds-level stratigraphic resolution
Environment/lithology: deep subtidal ramp; shelly/skeletal marl
• "Echinoderms most often cups and calices...but a very small proportion of complete crowns also occur..root systems and holdfasts moderately common...skeletal grains generally unabraded, and there is only occasional evidence of winnowing. Trilobites highly fragmented, as are many of the common bryzoan taxa. Brachiopods usually intact. The abundant and diverse inadunate and flexible crinoid fauna, limited but diverse non-crinoid echinderms, and rare but diverse camerates, sugges a rather deep water assemblage occasionally disturbed by storms, i.e. well below normal wave base. Base on [brachiopods] a position analogous to BA outer 4 or inner 5 is likely. The brach. faunaa differs somewhat from that described by Amsden 91951) from more typical Henryhouse sections...This argillaceous carbonate community somewaht resembles the Midcontinent carbonates from which the Pisocrinus-Gissocrinus assoc. [PBDB coll. 26815, 26816] is derived, but echinoderm diversity is much less and brachiopods are correspondingly more prominent in the younger community." [This marl facies is between shallower limestone facies and deeper graptolite shale facies according to some of Amsden's maps.]
•SEP environmental call based on given info
• "Moderately to abundantly fossiliferous...The lithology is a mud-supported marlstone, with skeletal debbris ranging from about 17-50%."
Size class: macrofossils
Collection methods: Table 45.49, which gives abundances for White Mound. I have added Nummicrinus, which is mentioned by name in text, but would appear to be included in the table only as part of the "lecanocrinid spp. (plates)."
Primary reference: T. J. Frest, C. E. Brett, and B. J. Witzke. 1999. Caradocian-Gedinnian echinoderm associations of Central and Eastern North America. Paleocommunities--a case study from the Silurian and Lower Devonian 638-783 [M. Foote/K. Koverman/P. Wagner]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 26824: authorized by Michael Foote, entered by Michael Foote on 05.11.2002, edited by Pete Wagner
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| unclassified | |
Saccocrinus sp., Lepidocoelus sp. n. sp.
Lepidocoelus sp. n. sp. | |
| Stylophora | |
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Mitrata indet. Jaekel 1918 | |
| Blastoidea | |
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Polydeltoideus enodatus Riemann and Fay 1961 blastoid | |
| Crinoidea | |
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Myelodactylus sp. Hall 1852 Sea lily | |
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Parapisocrinus quinquelobus Ausich and Copper 2010 Sea lily | |
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Zophocrinus angulatus Sea lily | |
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Abyssocrinus antiquus Sea lily | |
Calceocrinidae indet., "Synchirocrinus" quadratus, "Synchirocrinus" sp. n. sp., Calceocrinus humilis
"Synchirocrinus" quadratus Sea lily
"Synchirocrinus" sp. n. sp. Jaekel 1918 Sea lily
Calceocrinus humilis Sea lily | |
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Botryocrinus parcus Sea lily | |
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Amphipsalidocrinus sp. Weller 1930 Sea lily | |
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Gissocrinus quadratus Sea lily | |
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Thalamocrinus elongatus Sea lily | |
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Euspirocrinus cirratus Sea lily | |
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Bactrocrinites oklahomensis Sea lily | |
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Asaphocrinus densus Sea lily | |
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Gnorimocrinus pontotocensis Sea lily | |
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Pidelocrinus planus Sea lily | |
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Gazacrinus stellatus Sea lily | |
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Lampterocrinus fatigatus Sea lily | |
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Pelidocrinus exiguus Sea lily | |
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Elpidocrinus sp. Strimple 1963 Sea lily
Neoarchaeocrinus necopinus Sea lily | |
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Eucalyptocrinites sp. Goldfuss 1831 Sea lily | |
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Macrostylocrinus sp. Sea lily | |
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Hexacrinites carinatus Sea lily | |
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Paramelocrinus ubaghsi Sea lily | |
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Hagnocrinus sp. Frest and Strimple 1977 Sea lily | |
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Allocrinus irroratus Sea lily
Allocrinus globulus Sea lily | |
| Rhombifera | |
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Caryocrinites sp. Say 1825 | |
| Cyclocystoidea | |
Sievertsia sp. n. sp.
Sievertsia sp. n. sp. Smith and Paul 1982 | |
| Asteroidea | |
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| Echinoidea | |
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Echinoidea indet. Leske 1778 sea urchin | |
| Deuteropoda | |
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Ostracoda indet. Latreille 1802 ostracod | |
| Cirripedia | |
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Cirripedia indet. barnacle | |
| Trilobita | |
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Proetus foculus Campbell 1967 trilobite | |
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Diacalymene clavicula trilobite Presumably the same taxon listed as "Calymene clavicula Cambpell" in table 45.48
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Ananaspis guttulus trilobite | |
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Dalmanites rutellum trilobite | |
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Cheirurus infensus trilobite | |
| Rostroconchia | |
Bigalea sp. n. sp.
Bigalea sp. n. sp. Pojeta and Runnegar 1976 | |
| Gastropoda | |
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Platyostoma sp. Conrad 1842 snail | |
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Bellerophontoidea indet. M'Coy 1851 snail | |
| Sedentaria | |
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Spirorbis sp. Daudin 1800 | |
| Bryozoa | |
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Bryozoa indet. Ehrenberg 1831 | |
| Lophophorata | |
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Tentaculites sp. von Schlotheim 1820 | |
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Cornulites sp. Schlotheim 1820 | |
| Craniata | |
Craniops sp. n. sp.
Craniops sp. n. sp. Hall 1859 | |
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Craniidae indet. Menke 1828 | |
| Rhynchonellata | |
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Skenidioides sp. Schuchert and Cooper 1931 | |
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Orthida indet. Schuchert and Cooper 1932 | |
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Isorthis arcuaria Hall and Clarke 1892 | |
"Lissatrypa concentrica" = Lissatrypa, "Nanospira parvula" = Lissatrypa
"Lissatrypa concentrica" = Lissatrypa
"Nanospira parvula" = Lissatrypa | |
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Merista oklahomensis Amsden 1953 | |
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| Chileata | |
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Dictyonella gibbosa Hall 1868 | |
| Strophomenata | |
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Lissostrophia (Lissostrophia) cooperi Amsden 1949 | |
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Leptaena oklahomensis Amsden 1951 | |
"Amphistrophiella (Amsdenostrophiella) prolongata" = Amphistrophia (Amphistrophiella) prolongata
"Amphistrophiella (Amsdenostrophiella) prolongata" = Amphistrophia (Amphistrophiella) prolongata Foerste 1909 | |
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Leptaenisca irregularis Amsden 1951 | |
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"Coolinia reedsi" = Fardenia (Coolinia)
"Coolinia reedsi" = Fardenia (Coolinia) | |
| Anthozoa | |
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Tabulata indet. tabulate coral | |
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Favosites sp. Lamarck 1816 tabulate coral | |
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Rugosa indet. horn coral | |
| Heteractinida | |
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Astraeospongium spp. Roemer 1860 | |