Thomas Farm (Miocene of the United States)
Where: Gilchrist County, Florida (29.7° N, 82.6° W: paleocoordinates 30.0° N, 78.9° W)
• coordinate based on political unit
• outcrop-level geographic resolution
When: Alachua Formation, Hemingfordian (20.4 - 16.0 Ma)
• member-level stratigraphic resolution
Environment/lithology: terrestrial; calcareous sandstone and blue claystone
• fossils are from multiple horizons including a "joint clay"; a "layer of clayballs"; a "lime sand"; a bed of limestone "boulders" with "gravel and lime sand" matrix; and a "laminated bluish clay"; most of the material is from the "lime sand"
Size classes: macrofossils, mesofossils
Collected by C. Simpson, T. Barbour. P. Brodkorb in (Simpson), 1938 - 1942 (MCZ), 1959 (Brodkorb); reposited in the FLMNH, MCZ
Collection methods: bulk, quarrying, sieve,
Primary reference: T. E. White. 1942. The Lower Miocene mammal fauna of Florida. Bulletin of the Museum of Comparative Zoology 92(1):1-49 [J. Alroy/J. Alroy/J. Alroy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 18597: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by John Hunter, Jonathan Marcot, Jason Head, Matthew Carrano, Brian Beatty, Richard Hulbert, Terri Cleary and Mark Uhen
Creative Commons license: CC BY (attribution)
Taxonomic list
• six fossiliferous levels, but no detectable faunal turnover: Pratt 1990
NISP 2445, based on Pratt 1990, but this excludes small mammals (NISP 82+) and includes 250 specimens that may be specifically indeterminate; total about 2527; Pratt and Morgan 1989 report 81 specimens of two species for which Black 1963a reported 5, hence his 105 specimens in three other species may now be represented by about 1700, for a rough total of 1783 small mammals and 4310 overall
NISP 2445, based on Pratt 1990, but this excludes small mammals (NISP 82+) and includes 250 specimens that may be specifically indeterminate; total about 2527; Pratt and Morgan 1989 report 81 specimens of two species for which Black 1963a reported 5, hence his 105 specimens in three other species may now be represented by about 1700, for a rough total of 1783 small mammals and 4310 overall
Show authors, comments, and common names
| unclassified | |
| Amphibia | |
"Scaphiopus cf. holbrooki" = Scaphiopus (Scaphiopus) holbrooki2
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Siren hesterna n. sp.11
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| Aves | |
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"Phalacrocorax subvolans n. sp." = Anhinga subvolans8
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Promilio epileus n. sp.28, "Proictinia floridana n. sp." = Promilio floridanus8, Promilio brodkorbi n. sp.28
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Boreortalis laesslei n. gen. n. sp.7
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Rhegminornis calobates n. gen. n. sp.27
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| Reptilia | |
Alligator olseni n. sp.30
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Ogmophis pauperrimus n. sp.26
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"Neurodromicus stanolseni n. sp." = Boa constrictor26, "Neurodromicus barbouri n. sp." = Boa constrictor26, Calamagras floridanus n. sp.3, Pterygoboa sp.17
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Anilioides minuatus n. gen. n. sp.3
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Peltosaurus floridanus n. sp.26
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Testudo tedwhitei n. sp.32
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| Mammalia | |
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Miomyotis floridanus n. gen. n. sp.15, Karstala silva n. gen. n. sp.9, Suaptenos whitei n. gen. n. sp.15
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Primonatalus prattae n. gen. n. sp.18
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"Aelurodon johnhenryi n. sp." = Phoberocyon johnhenryi31
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Leptarctus ancipidens20, Mustelinae indet.24, Oligobunis floridanus n. sp.31, Zodiolestes freundi n. sp.14
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"Cynelos caroniavorus" = Cynelos caroniavorus24, "Parictis bathygenus n. sp." = Cynelos caroniavorus31, Amphicyon longiramus n. sp.
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"Tomarctus canavus n. sp." = Metatomarctus canavus, "Nothocyon insularis" = Metatomarctus canavus31, "Aelurocyon spissidens n. sp." = Euoplocyon spissidens31, Phlaocyon sp.12, "Paradaphoenus tropicalis n. sp." = Osbornodon iamonensis
"Tomarctus canavus n. sp." = Metatomarctus canavus Simpson 1932 bone-crushing dog
"Paradaphoenus tropicalis n. sp." = Osbornodon iamonensis Sellards 1916 canid includes "P. nobilis" of White 1942
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Parahippus leonensis Sellards 1916 anchitheriine horse includes "P. barbouri" type of White 1942, and apparently "Merychippus gunteri" of White 1942
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Floridachoerus olseni n. sp.29
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"Floridatragulus dolichanthereus n. sp." = Floridatragulus dolichanthereus, "Floridatragulus barbouri n. sp." = Floridatragulus dolichanthereus31, "Oxydactylus floridanus n. sp." = Nothokemas floridanus, "Nothokemas grandis n. gen. n. sp." = Nothokemas floridanus31
"Floridatragulus dolichanthereus n. sp." = Floridatragulus dolichanthereus White 1940 camel includes "Hypermekops olseni" type of White 1942; see also Patton 1967
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Synthetoceras australis20, "Synthetoceras (Prosynthetoceras) douglasi n. sp." = Prosynthetoceras texanus31
"Synthetoceras (Prosynthetoceras) douglasi n. sp." = Prosynthetoceras texanus31 Hay 1924 protoceratid | |
Machaeromeryx gilchristensis n. sp., Parablastomeryx floridanus n. sp.
Machaeromeryx gilchristensis n. sp. White 1941 musk deer
Parablastomeryx floridanus n. sp. White 1940 musk deer | |
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Petauristodon pattersoni22 Pratt and Morgan 1989 squirrel includes "Prosciurus? sp." of Black 1963a (1 specimen)
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1Alroy 2002; 2Auffenberg 1956; 3Auffenberg 1963; 4Baskin 1986; 5Beatty 2010; 6Becker 1987; 7Brodkorb 1954; 8Brodkorb 1956; 9Czaplewski and Morgan 2001; 10Daza et al. 2014; 11Goin and Auffenberg 1955; 12Hayes 2000; 13Holman 1961; 14Labs Hochstein 2007; 15Lawrence 1943; 16Mead 2013; 17Mead and Schubert 2013; 18Morgan and Czaplewski 2003; 19Morgan and Pratt 1988; 20Olsen 1962; 21Pratt 1990; 22Pratt and Morgan 1989; 23Steadman 2008; 24Tedford and Frailey 1976; 25Tihen 1951; 26Vanzolini 1952; 27Wetmore 1943; 28Wetmore 1958; 29White 1941; 30White 1942; 31White 1947; 32Williams 1953; 33Wood 1964