Ausich et al.—Fort Payne Formation Batocrinidae


687


Alternatively, conditions at the toe-of-slope basinal settings should have been more predictable, although the presence of sheet packstone facies indicates that this setting was periodically disrupted by storms and/or by down-slope sediment slides. The two contrasting Fort Payne buildups may have offered contrasting sediments for holdfast anchoring: coarse, poorly sorted skeletal debris on carbonate packstone buildups versus a semi-consolidated carbonate mud on wackestone buildups (Ausich and Meyer, 1990; Meyer et al., 1995). It is also possible that the presumed microbial nature of mud accumulation on wackestone buildups may have offered a food resource that contrasted with that on crinoidal packstone buildups. However, differences in the substratum conditions between these two buildup types did not restrict most batocrinid species.


Materials and methods


As outlined in Supplemental Data 1, crinoid assemblages from specific localities and facies were evaluated using Principal Coordinate Analysis in order to examine the possibility of specific associations of batocrinids in each facies. Further explanation of methods is given in Supplemental Data 1.


Repositories and institutional abbreviations.—CMC IP, Cincinnati Museum Center, Cincinnati, Ohio; FMNH, Field Museum of Natural History, Chicago, Illinois; IGS, Illinois State Geological Survey, Champaign, Illinois; IU, Department of Earth and Atmospheric Sciences, Indiana University, Bloomington, Indiana; OSU, Orton Geological Museum, The Ohio State University, Columbus, Ohio; UI, Department of Geology, University of Illinois, Champaign, Illinois; USNM, Springer Room, U.S. National Museum of Natural History, Washington, D.C.


Systematic paleontology


The synonymies listed include only key references and references with representative illustrations. Complete synony- mies for taxa discussed here (Supplemental Data 2), detailed locality information (Supplemental Data 3), and tables of measurements (Supplemental Data 4) are companions to the present paper. In addition, most of the citations listed in Supplemental Data 2 will also be listed in Webster and Webster (2013). Morphological terminology follows Ubaghs (1978a) and


Ausich et al. (1999). Abbreviations used in designating mea- surements include CaH, calyx height; CaW, calyx width; BH, basal plate height; BW, basal plate width; BRW, basal rim width; TH, tegmen height (from arm openings to base of anal tube). An * indicates a measurement of an incomplete or of a compressed specimen. Class- and order-level classification follows Wright et al. (2017).


Class Crinoidea Miller, 1821


Subclass Camerata Wachsmuth and Springer, 1885 Infraclass Eucamerata Cole, 2017


Order Monobathrida Moore and Laudon, 1943


Table 2. Distribution and relative abundance of Batocrinidae among facies and localities Kentucky and Tennessee with 25 or more batocrinid specimens known; total number of species per locality is based on Krivicich et al., 2014.


Packstone Buildups


Batocrinid species Abatocrinus grandis


Cave Springs North


Abatocrinus stereopes


Eretmocrinus ramulosus 41 1 3


Alloprosallocrinus conicus Eretmocrinus magnificus


Eretmocrinus spinosus Macrocrinus casualis


Macrocrinus mundulus


67 48


E. magnificus×E. spinosus 01 1 2


5 3


15


00 3 4


Macrocrinus strotobasilaris 00 0 Magnusrinus cumberlandensis n. sp. Magnuscrinus kammeri Uperocrinus nashvillae Uperocrinus robsutus


00 0 0


1


10 22


Total Batocrinid Specimens Total Locality Specimens


Percent Relative Abundance of Batocrinidae in Fauna


40.9%


148 362


29.2% 53.3% 37.3% 42.3% 32.0% 19.6% 12.8%


227 777


359 673


106 284


152 359


128 163 195 32


193 12 4


3 7


Cave Springs South


217


Gross Creek


35 5 72 90


39 59


Gross Creek West


4 0


40 8 0


11 0 3 0 0 0 0


34 6


Owens Branch


5 0


52 39 10 22 0 2 0 0 0 0


11 11


Wackestone Buildups Lily


Creek 0


0


32 4 1 3 0 0 0 0 0 0 0 1


41


Pleasant Hill


1 0


21 7 3 0 0 0 0 0 0 0 0 0


32


Bug- wood


0 0


16 5 2 2 0 0 0 0 0 0 0 0


25


Wolf Creek/ Caney Fork


7 0


33 69 3 3 0


10 1 1 0 0 9


Allochtonous Facies 61


0 Unknown Facies


DW 61 RS 1


0 0


24 2 3 0 0


20 55.9%


156 279


10 0


1 1 0 0 0 3 0 0 7


Falls 21


76 6


14 30 52 24 23 140 0 3 0


7 32


1 4 1 6 0 5 1 0 1


24.3% 27.3% 70.3% 55.0%


81 72 270 334 264 384


120 218


Site 301 Loc 5 Tenn


4 0


49 22 0 3 0 0 0 0 0 2


35 5


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