PBDB Collection

Garnett Quarry (Carboniferous of the United States)

Also known as Garnett Vertebrate Fauna, Charles Hardesty farm

Where: Anderson County, Kansas (38.4° N, 95.3° W: paleocoordinates 3.5° S, 28.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Rock Lake Shale Member (Stanton Formation), Missourian (306.0 - 303.7 Ma)

• "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)

• group of beds-level stratigraphic resolution

Environment/lithology: fine channel fill; brown, calcareous, carbonaceous mudstone

• "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.

• "dark greyishbrown, moderately well bedded, very carbonaceous, calcareous mudstone" (Reisz et al., 1982)

Size class: macrofossils

Collected by F. E. Peabody, R. Camp, R. L. Carroll, R. R. Reisz, M. J. Heaton, B. R. Pynn, G. MacDonald in 1953-1956, 1965, 1980, 1981; reposited in the ROM

Collection methods: bulk, mechanical

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 80784: authorized by Johannes Mueller, entered by Jana Dummasch on 08.05.2008, edited by Torsten Liebrecht, Marcus Walther and Emma Dunne

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Osteichthyes
Amniota -	Amniota indet.⁶ Amniota indet.⁶ Haeckel 1866 amniote KUVP 1425, assigned to Petrolacosaurus and Edaphosaurus ecordi (Peabody, 1952, 1957)
Pelycosauria -	"Edaphosaurus ecordi n. sp." = Xyrospondylus ecordi, "Xyrospondylus ecordi" = Xyrospondylus ecordi² "Edaphosaurus ecordi n. sp." = Xyrospondylus ecordi Peabody 1957 pelycosaur KUVP 9963 (type) "Xyrospondylus ecordi" = Xyrospondylus ecordi² Peabody 1957 pelycosaur
Synapsida - Edaphosauridae	"Ianthasaurus hardestii n. gen. n. sp." = Ianthasaurus hardestiorum⁶ "Ianthasaurus hardestii n. gen. n. sp." = Ianthasaurus hardestiorum⁶ Reisz and Berman 1986 synapsid KUVP 39035 (type); ROM 29940-29942, 37751 (last specimen number is from Modesto & Reisz, 1990), ROM 59933 (Mazierski & Reisz, 2010)
Synapsida -	Tenuacaptor reiszi n. gen. n. sp.⁸, Haptodus garnettensis n. sp.¹, Kenomagnathus scotti n. gen. n. sp.⁸, Ianthodon schultzei n. gen. n. sp.³ Tenuacaptor reiszi n. gen. n. sp.⁸ Spindler 2015 synapsid Type and only specimen ROM 43601, originally “Haptodus” garnettensis (Laurin, 1993, Fig., 8 D), disarticulated and partially recovered skeleton (Fig. 4.18). Haptodus garnettensis n. sp.¹ Currie 1977 synapsid 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.⁸ Spindler 2020 synapsid Type and only specimen ROM 43608, originally “Haptodus” garnettensis (Laurin, 1993, Fig. 5 A), isolated but associated maxilla and lacrimal. Ianthodon schultzei n. gen. n. sp.³ Kissel and Reisz 2004 synapsid KUVP 133735 (holotype)
Reptilia
Araeoscelidia - Petrolacosauridae	"Petrolacosaurus kansensis n. gen. n. sp." = Petrolacosaurus kansensis⁴, "Podargosaurus hibbardi n. gen. n. sp." = Petrolacosaurus kansensis⁴ "Petrolacosaurus kansensis n. gen. n. sp." = Petrolacosaurus kansensis⁴ Lane 1945 diapsid 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." = Petrolacosaurus kansensis⁴ Lane 1945 diapsid KUVP 1423 (type)
Amphibia
Temnospondyli -	Hesperoherpeton garnettense n. gen. n. sp.⁵ Hesperoherpeton garnettense n. gen. n. sp.⁵ Peabody 1958 tetrapod KUVP 9976 (Holotype, a scapulocoracoid and neural arch)
Temnospondyli - Trematopidae	Actiobates peabodyi n. gen. n. sp.⁷ Actiobates peabodyi n. gen. n. sp.⁷ Schoch and Milner 2014 tetrapod KUVP 17941 (Holotype: skull (5cm long) and anterior portion of postcranial skeleton)

¹Currie 1977; ²Kissel 2010; ³Kissel and Reisz 2004; ⁴Peabody 1952; ⁵Peabody 1958; ⁶Reisz and Berman 1986; ⁷Schoch and Milner 2014; ⁸Spindler 2015