Pisocrinus-Abyssocrinus antiquus Assoc., Henryhouse Fm., White Mound (Silurian to of the United States)

Where: Oklahoma (34.4° N, 97.0° W: paleocoordinates 27.9° S, 60.4° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Henryhouse Formation, Ludlow to Ludlow (427.4 - 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%."

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

Bryozoa indet. Ehrenberg 1831
 Octactinellida - Astraeospongiidae
 Rugosa -
Rugosa indet. horn coral
 Tabulata -
Tabulata indet. tabulate coral
 Favositida - Favositidae
Favosites sp. Lamarck 1816 tabulate coral
 Fissiculata - Phaenoschismatidae
Polydeltoideus enodatus Breimer and Macurda 1972 blastoid
 Hemicosmitoida - Caryocrinitidae
 Monobathrida -
 Monobathrida - Paramelocrinidae
 Monobathrida - Dolatocrinidae
 Monobathrida - Hirneacrinidae
Hagnocrinus sp. Frest and Strimple 1977 Sea lily
 Monobathrida -
 Monobathrida - Eucalyptocrinitidae
Eucalyptocrinites sp. Goldfuss 1831 Sea lily
 Monobathrida - Patelliocrinidae
 Monobathrida - Hexacrinitidae
 Diplobathrida -
 Diplobathrida - Gazacrinidae
 Diplobathrida - Lampterocrinidae
 Diplobathrida -
 Diplobathrida - Rhodocrinitidae
Elpidocrinus sp. Strimple 1963 Sea lily
 Sagenocrinida - Lecanocrinidae
Lecanocrinidae indet. Springer 1913 Sea lily
"lecanocrinid spp. (plates)"
 Sagenocrinida - Homalocrinidae
 Taxocrinida - Taxocrinidae
 Dendrocrinida - Dendrocrinidae
 Cyathocrinida - Cyathocrinitidae
 Cyathocrinida - Euspirocrinidae
 Cyathocrinida - Thalamocrinidae
 Cyathocrinida - Codiacrinidae
Amphipsalidocrinus sp. Weller 1930 Sea lily
 Cladida - Botryocrinidae
 Inadunata -
Passalocrinus sp. Sea lily
"(microcrinoid or juvenile blastoid)"
 Disparida -
Disparida indet. Sea lily
"disparid gen. nov. Sevastopulo and Lane, 1981 (microcrinoid)"
 Pisocrinida - Pisocrinidae
Pisocrinus spatulatus Sea lily
Subgenus given only as (G.)
Parapisocrinus quinquelobus Ausich and Copper 2010 Sea lily
 Myelodactylida - Myelodactylidae
Myelodactylus sp. Hall 1852 Sea lily
 Disparida - Synbathocrinidae
 Disparida - Zophocrinidae
 Calceocrinida - Calceocrinidae
Calceocrinidae indet. Meek and Worthen 1869 Sea lily
"Synchirocrinus" sp. n. sp. Jaekel 1918 Sea lily
  - Cyclocystoididae
Sievertsia sp. n. sp. Smith and Paul 1982
Asteroidea indet. de Blainville 1830 sea star
starfish plates
Echinoidea indet. Leske 1778 sea urchin
 Mitrata -
Mitrata indet. Jaekel 1918
Ostracoda indet. Latreille 1802 ostracod
 Phacopida - Cheiruridae
 Phacopida - Calymenidae
Diacalymene clavicula trilobite
Presumably the same taxon listed as "Calymene clavicula Cambpell" in table 45.48
 Phacopida - Phacopidae
 Phacopida - Dalmanitidae
 Corynexochida - Styginidae
Kosovopeltis spp. Snajdr 1958 trilobite
"likely nebula Cambpell and hypha Campbell"
 Proetida - Proetidae
Proetus foculus Campbell 1967 trilobite
 Cornulitida - Cornulitidae
Cornulites sp. Schlotheim 1820
 Tentaculitida - Tentaculitidae
Tentaculites sp. von Schlotheim 1820
 Rhynchonellida - Camarotoechiidae
 Athyridida - Anoplothecidae
 Athyridida - Meristellidae
 Athyridida - Meristidae
 Athyridida - Rhynchospirinidae
 Atrypida - Atrypidae
 Atrypida - Lissatrypidae
"Lissatrypa concentrica" = Lissatrypa, "Nanospira parvula" = Lissatrypa
"Lissatrypa concentrica" = Lissatrypa
"Nanospira parvula" = Lissatrypa
 Protorthida - Skenidiidae
Skenidioides sp. Schuchert and Cooper 1931
 Orthida -
Orthida indet. Schuchert and Cooper 1932
 Orthida - Rhipidomellidae
 Orthida - Dicoelosiidae
 Orthida - Dalmanellidae
Isorthis arcuaria Hall and Clarke 1892
 Orthida - Hesperorthidae
 Spiriferida - Ambocoeliidae
Ambocoeliidae indet. George 1931
"ambocoeliid resembling Plicoplasia"
 Pentamerida - Parastrophinidae
 Dictyonellida - Eichwaldiidae
 Orthotetida - Chilidiopsidae
"Coolinia reedsi" = Fardenia (Coolinia)
"Coolinia reedsi" = Fardenia (Coolinia)
 Orthotetida - Schuchertellidae
"Schuchertella" attentuata
Is this a misprint for "attenuata"?
 Strophomenida - Strophodontidae
 Strophomenida - Rafinesquinidae
 Strophomenida - Amphistrophiidae
"Amphistrophiella (Amsdenostrophiella) prolongata" = Amsdenostrophiella prolongata
"Amphistrophiella (Amsdenostrophiella) prolongata" = Amsdenostrophiella prolongata Foerste 1909
 Strophomenida - Leptaenoideidae
 Craniopsida - Craniopsidae
Craniops sp. n. sp.
Craniops sp. n. sp. Hall 1859
 Craniida - Craniidae
Craniidae indet. Menke 1828
 Bellerophontida -
Bellerophontoidea indet. M'Coy 1851 snail
 Euomphalina - Platyceratidae
Platyostoma sp. Conrad 1842 snail
 Conocardiida - Pseudobigaleaidae
Bigalea sp. n. sp.
Bigalea sp. n. sp. Pojeta and Runnegar 1976
 Sabellida - Serpulidae
Spirorbis sp. Daudin 1800