Garnett Quarry: Missourian, Kansas
collected by F. E. Peabody, R. Camp, R. L. Carroll, R. R. Reisz, M. J. Heaton, B. R. Pynn, G. MacDonald 1953-1956, 1965, 1980, 1981

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Amniota indet. Haeckel 1866
Reisz and Berman 1986 1 individual
KUVP 1425, assigned to Petrolacosaurus and Edaphosaurus ecordi (Peabody, 1952, 1957)
Reptilia - Petrolacosauridae
Petrolacosaurus kansensis n. gen., n. sp. Lane 1945
Peabody 1952 10 individuals
KUVP 1424 (type), 1426-1429, 8351, 8355, 9951*, 9952*, 33602*, 33603*; Nebraska Geol. Surv. (unnumbered specimen); asterisks mark specimens reported by Reisz (1977)
Podargosaurus hibbardi n. gen., n. sp. Lane 1945
Peabody 1952 1 individual
synonym of Petrolacosaurus kansensis
KUVP 1423 (type)
Pelycosauria
Edaphosaurus ecordi n. sp. Peabody 1957
1 individual
recombined as Xyrospondylus ecordi
KUVP 9963 (type)
Xyrospondylus ecordi (Peabody 1957)
Kissel 2010
unclassified
Haptodus garnettensis n. sp. Currie 1977
Currie 1977 17 specimens
RM14156 skeleton of immature individual (holotype); RM 14157 incomplete skill of immature individual; RM 14157 dentary and splenial; RM14159 hind-limb; RM14162 quadrate process of pterygoid; RM14223 lumbar neural arch and ischium; ROM29872 incomplete skeleton; ROM29937 incomplete skeleton; ROM30099 left lower jaw; ROM43601 left mandibular ramus, right dentary, quadratojugal, epipterygoid, and clavicle; ROM43602 skull, mandible, and a few caudal vertebrae with heal arches; ROM43603 right hind-limb and pelvic girdle and incompletely preserved left femur; ROM43604, disarticulated skeleton including a few cranial elements; ROM43605 left scapulocoracoid; ROM43606 skull lacking braincase; ROM43607 articulated string of postcervical vertebrae and ribs; ROM43608 left maxilla and lacrimal
Kenomagnathus scotti n. gen., n. sp. Spindler 2020
Spindler 2015
Type and only specimen ROM 43608, originally “Haptodus” garnettensis (Laurin, 1993, Fig. 5 A), isolated but associated maxilla and lacrimal.
Tenuacaptor reiszi n. gen., n. sp. Spindler 2015
Spindler 2015
Type and only specimen ROM 43601, originally “Haptodus” garnettensis (Laurin, 1993, Fig., 8 D), disarticulated and partially recovered skeleton (Fig. 4.18).
Ianthodon schultzei n. gen., n. sp. Kissel and Reisz 2004
Kissel and Reisz 2004
KUVP 133735 (holotype)
Edaphosauridae
Ianthasaurus hardestii n. gen., n. sp. Reisz and Berman 1986
Reisz and Berman 1986 5 individuals
corrected as Ianthasaurus hardestiorum
KUVP 39035 (type); ROM 29940-29942, 37751 (last specimen number is from Modesto & Reisz, 1990), ROM 59933 (Mazierski & Reisz, 2010)
Amphibia - Temnospondyli - Trematopidae
Actiobates peabodyi n. gen., n. sp. Schoch and Milner 2014
Schoch and Milner 2014
KUVP 17941 (Holotype: skull (5cm long) and anterior portion of postcranial skeleton)
Amphibia - Temnospondyli
Hesperoherpeton garnettense n. gen., n. sp. Peabody 1958
Peabody 1958
nomen dubium belonging to Temnospondyli
KUVP 9976 (Holotype, a scapulocoracoid and neural arch)
see common names

Geography
Country:United States State/province:Kansas County:Anderson
Coordinates: 38.4° North, 95.3° West (view map)
Paleocoordinates:3.5° South, 28.5° West
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Carboniferous Epoch:Late/Upper Pennsylvanian
Stage:Kasimovian 10 m.y. bin:Carboniferous 5
Key time interval:Missourian
Age range of interval:305.90000 - 303.40000 m.y. ago
Stratigraphy
Geological group:Lansing Formation:Stanton Member:Rock Lake Shale
Stratigraphic resolution:group of beds
Stratigraphy comments: "Rock Lake Member, Stanton Formation, Lansing Group, Missourian Series, Upper Pennsylvanian" (Reisz & Berman, 1996)
all vertebrate remains seem to come exclusively from the basal part of the Rock Lake Shale (see Reisz et al., 1982)
Lithology and environment
Primary lithology:brown calcareous,carbonaceous mudstone
Includes fossils?Y
Lithology description: "dark greyishbrown, moderately well bedded, very carbonaceous, calcareous mudstone" (Reisz et al., 1982)
Environment:fine channel fill Tectonic setting:foreland basin
Glacial or sequence phase:transgressive systems tract
Geology comments: "The Rock Lake Shale is a rather thin but otherwise typical ’outside’ shale of a ’Kansas Megacyclothem’ sequence formed as a change from regressive to transgressive conditions occurred [...] The site is located along the western edge of what was, during the Late Pennsylvanian, a shallow, forested stream valley or channel that was eroded into a limestone coastal plain during the latter stages of a major eustatic fall in sea level. As the succeeding rise in sea level occurred, the valley was gradually flooded by estuarine waters" (Reisz et al., 1982).
Sequence stratigraphy is interpreted from the description given by Reisz et al. (1982). The surface of the underlying limestone is the sequence boundary merged with the transgressive surface and the Lake Rock Shale is the basalmost deposit of the transgressive systems tract.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Preservation of anatomical detail:good
Temporal resolution:snapshot
Collection methods and comments
Collection methods:bulk,mechanical
Reason for describing collection:taxonomic analysis
Museum repositories:ROM
Collectors:F. E. Peabody, R. Camp, R. L. Carroll, R. R. Reisz, M. J. Heaton, B. R. Pynn, G. MacDonald Collection dates:1953-1956, 1965, 1980, 1981
Metadata
Also known as:Garnett Vertebrate Fauna, Charles Hardesty farm
Database number:80784
Authorizer:J. Mueller, R. Butler, J. Fröbisch Enterer:J. Dummasch, M. Walther, T. Liebrecht, E. Dunne
Modifier:E. Dunne Research group:vertebrate
Created:2008-05-08 05:41:33 Last modified:2015-10-19 10:20:44
Access level:the public Released:2008-05-08 05:41:33
Creative Commons license:CC BY
Reference information

Primary reference:

28862. R. R. Reisz, M. J. Heaton, and B. R. Pynn. 1982. Vertebrate Fauna of Late Pennsylvanian Rock Lake Shale near Garnett, Kansas: Pelycosauria. Journal of Paleontology 56(3):741-750 [J. Mueller/T. Liebrecht]

Secondary references:

28870 P. Currie. 1977. A New Haptodontine Sphenacodont (Reptilia: Pelycosauria) from the Upper Pennsylvanian of North America. Journal of Paleontology 51(5):927-942 [J. Mueller/T. Liebrecht]
60077 R. Kissel. 2010. Morphology, Phylogeny, and Evolution of Diadectidae (Cotylosauria: Diadectomorpha). University of Toronto [R. Butler/E. Dunne]
28867 R. A. Kissel and R. R. Reisz. 2004. Synapsid fauna of the Upper Pennsylvanian Rock Lake Shale near Garnett, Kansas and the diversity pattern of early amniotes. In G. Arratia, M. V. H. Wilson and R. Cloutier (eds.), Recent Advances in the Origin and Early Radiation of Vertebrates. Verlag Dr. Friedrich Pfeil, Munich 409-428 [J. Mueller/T. Liebrecht/T. Liebrecht]
56679 D. M. Mazierski and R. R. Reisz. 2010. Description of a new specimen of Ianthasaurus hardestiorum (Eupelycosauria: Edaphosauridae) and a re-evaluation of edaphosaurid phylogeny. Canadian Journal of Earth Sciences 47(6):901-912 [R. Butler/E. Dunne]
28861 S. P. Modesto and R. R. Reisz. 1990. A new skeleton of Ianthasaurus hardestii, a primitive edaphosaur (Synapsida: Pelycosauria) from the Upper Pennsylvanian of Kansas. 27(6):834-844 [J. Mueller/T. Liebrecht]
28865 F. E. Peabody. 1952. Petrolacosaurus kansensis Lane, a Pennsylvanian Reptile from Kansas. The University of Kansas Paleontological Contributions, Series Vertebrata 1:1-41 [J. Mueller/T. Liebrecht]
59289 F. E. Peabody. 1958. An embolomerous amphibian in the Garnett fauna (Pennsylvanian) of Kansas. Journal of Paleontology 32:571-573 [R. Butler/E. Dunne]
28866 R. R. Reisz. 1977. Petrolacosaurus, the Oldest Known Diapsid Reptile. Science 196:1091-1093 [J. Mueller/T. Liebrecht/T. Liebrecht]
28860 R. R. Reisz and D. S. Berman. 1986. Ianthasaurus hardestii n. sp., a primitive edaphosaur (Reptilia, Pelycosauria) from the Upper Pennsylvanian Rock Lake Shale near Garnett, Kansas. Canadian Journal of Earth Sciences 23(1):77-91 [J. Mueller/T. Liebrecht]
57795 R. R. Schoch and A. R. Milner. 2014. Handbook of Paleoherpetology Part 3A2 Temnospondyli I. [R. Butler/E. Dunne/E. Dunne]
60090 F. Spindler. 2015. The basal Sphenacodontia: Systematic revision and evolutionary implications. 385 [R. Butler/E. Dunne/R. Butler]