PBDB Collection

Brooksville 2: Arikareean, Florida

List of taxa

Where & when

Geology

Taphonomy & methods

Metadata & references

Taxonomic list

Mammalia

	Herpetotherium sp. Cope 1873
	said to be new
Mammalia - Carnivora - Canidae

	Phlaocyon taylori n. sp. Hayes 2000
	(7 measurements)

	Enhydrocyon cf. pahinsintewakpa (Macdonald 1963)

	Osbornodon wangi n. sp. Hayes 2000
	(3 measurements)
Mammalia - Carnivora - Palaeogalidae

	Palaeogale minuta (Gervais 1848)
	(1 measurement)
Mammalia - Carnivora - Mustelidae

	Arikarictis chapini n. sp. Hayes 2000
	(3 measurements)

	Acheronictis webbi n. sp. Hayes 2000
	(3 measurements)
Mammalia - Camelidae

	Nothokemas waldropi Frailey 1978
Mammalia - Merycoidodontidae

	Phenacocoelinae indet. Schultz and Falkenbach 1950
Mammalia - Hypertragulidae

	Nanotragulus loomisi Lull 1922
Mammalia - Perissodactyla - Equidae

	Miohippus sp. Marsh 1874
Mammalia - Geolabididae

	Centetodon magnus (Clark 1936)
Mammalia - Erinaceidae

	Parvericius montanus Koerner 1940
	(1 measurement)
Mammalia - Rodentia - Florentiamyidae

	Florentiamyidae indet. Wood 1936
Mammalia - Rodentia - Heliscomyidae

	Heliscomyidae indet. Korth et al. 1991
Mammalia - Rodentia - Eomyidae

	Eomyidae indet. Winge 1887
Mammalia - Rodentia - Castoridae

	Agnotocastor sp. Stirton 1935
Mammalia - Rodentia - Sciuridae

	Sciuridae indet. Gray 1821
Mammalia - Rodentia - Entoptychidae

	Entoptychinae indet. Miller and Gidley 1918
	said to be new
Mammalia - Lagomorpha - Leporidae

	Megalagus abaconis n. sp. Hayes 2000
	(6 measurements)
Mammalia - Chiroptera - Mormoopidae

	Mormoopidae indet. Saussure 1860
	a bat

	Koopmanycteris palaeomormoops n. gen., n. sp. Morgan et al. 2019	Morgan et al. 2019	42 specimens
	UF 157765 (holotype), right dentary with p4-m3 and alveoli for i1-p3
Mammalia - Chiroptera - Phyllostomidae

	Phyllostomatidae indet. Savage 1951	Czaplewski and Morgan 2002
	a bat; large sized
Mammalia - Chiroptera - Emballonuridae

	Emballonuridae indet. Dobson 1875
	a bat
Mammalia - Chiroptera - Vespertilionidae

	Vespertilionidae indet. Gray 1821
	a bat
Reptilia - Helodermatidae

	Helodermatidae indet. Gray 1837	Bourque 2013
Reptilia

	Scolecophidia indet. (Duméril and Bibron 1844)	Mead 2013	3 specimens
	UF 268995, -96, 269073, three trunk vertebrae
Reptilia - Eublepharidae

	Eublepharidae indet. Boulenger 1883	Chovanec 2014	3 specimens
	"UF 275603 (partial left maxilla), UF 274247 (partial right dentary), UF 278770 (partial left dentary)"
Reptilia - Scincidae

	Scincidae indet. Gray 1825	Chovanec 2014	5 specimens
	"UF 274043 (partial right dentary with splenial), UF 274063 (partial right dentary), UF 274239 (partial right dentary), UF 274240 (partial right dentary), UF 274252 (right premaxilla)"
Reptilia - Rhineuridae

	Rhineuridae indet. Vanzolini 1951	Chovanec 2014	3 specimens
	"UF 268989-94 (vertebrae), UF 274047 (vertebra), UF 275673 (partial right dentary)"
Reptilia - Iguanidae

	Iguanidae indet. Oppel 1811	Chovanec 2014	3 specimens
	"UF 275612 (partial left dentary), UF 274077 (partial right dentary), UF 275644 (partial right dentary)"

	Iguaninae indet. Cope 1886	Chovanec 2014	2 specimens
	"UF 274049 (partial right dentary), UF 275635 (partial left dentary)"
Reptilia - Polychrotidae

	Anolis informal morphotype A	Chovanec 2014	36 specimens
	"UF 274039 (partial dentary), 274041 (partial dentary), 274061 (frontal), 274073 (partial dentary), 274074 (partial dentary), 275606 (partial maxilla), 275608 (partial dentary), 275611 (partial dentary), 275620 (partial dentary), 275627 (left postorbital), 275629 (partial dentary), 275645-275647 (partial dentaries), 275649-650 (partial dentaries), 275653 (partial left maxilla), 275667 (braincase), 275677-275681 (frontals), 275682-275684 (left quadrates), 275685-275686 (frontals), 275693-275694 (partial maxillae), 275697 (partial dentary), 275699-275701 (partial dentaries), 278727 (left prefrontal), 278745 (left prefrontal)"

	cf. Anolis informal morphotype B	Chovanec 2014	5 specimens
	"UF 275662 (partial right dentary), UF 275695 (partial right dentary), UF 275696 (partial right dentary), UF 275619 (partial left dentary), UF 275665 (partial left dentary)"
Reptilia

	Alligatoridae indet. Gray 1844	Bourque 2013
	"dwarf alligatorid"
	= Alligator sp. Daudin 1809	Whiting et al. 2016
	UF 422816 and additional remains
Reptilia - Testudines - Kinosternoidea

	Xenochelys floridensis n. sp. Bourque 2013	Bourque 2013
	UF 150006-150007, holotype
Reptilia - Testudines - Testudinidae

	Testudinidae indet. Batsch 1788	Bourque 2013
	"small tortoise (from sub-localities 1A and 1B)
Amphibia - Temnospondyli - Rhinophrynidae

	Rhinophrynus sp. Dumeril and Bibron 1841	Blackburn et al. 2019	12 specimens
	from Quarry 1A, localities HE003 and HE008
Echinoidea - Spatangoida - Schizasteridae

	Agassizia (Aniaster) mossomi Cooke 1942	Cooke 1942
see common names

Geography

Country:	United States	State/province:	Florida	County:	Hernando
Coordinates:	28.5° North, 82.2° West (view map)
Paleocoordinates:	28.7° North, 77.0° West
Basis of coordinate:	based on political unit
Geographic resolution:	outcrop

Time


10 m.y. bin:	Cenozoic 4-5
*Period:	Tertiary	*Epoch:	Oligocene
*Local age/stage:	Middle Arikareean
Key time interval:	Arikareean
Age range of interval:	29.5 - 18.5 m.y. ago
Age estimate:	27 ± 1 Ma (other)
* legacy (obsolete) database fields

Stratigraphy

Stratigraphic resolution:	group of beds
Stratigraphy comments: Middle Arikareean The age of the deposit was considered to be 26–25 Ma by Tedford et al. (2004) based on mammalian biochronology. Later analysis by Czaplewski and Morgan (2012) and Morgan et al. (2019) suggested a slightly older age range of 28–26 Ma

Lithology and environment

Primary lithology:	planar lamination claystone
Secondary lithology:	sandstone
Includes fossils?	Y
Includes fossils?	Y
Lithology description: laminated clay and sand
Environment:	fissure fill

Taphonomy

Modes of preservation:	body
Size of fossils:	macrofossils,mesofossils

Collection methods and comments

Collection methods:	field collection
Reason for describing collection:	general faunal/floral analysis

Metadata

Database number:	17476
Authorizer:	J. Alroy, P. Mannion, P. Barrett, J. Bloch, M. Uhen, B. Allen, P. Holroyd	Enterer:	J. Alroy, R. Hulbert, P. Mannion, P. Holroyd, B. Allen, T. Cleary, M. Uhen
Modifier:	B. Allen	Research group:	vertebrate
Created:	2002-05-15 00:00:00	Last modified:	2023-07-25 09:38:26
Access level:	the public	Released:	2002-05-15 00:00:00
Creative Commons license:	CC BY

Reference information

Primary reference:

4229.

F. G. Hayes. 2000. The Brooksville 2 local fauna (Arikareean, latest Oligocene) Hernando County, Florida. Bulletin of the Florida Museum of Natural History 43(1):1-47 [J. Alroy/J. Alroy/J. Alroy]

Secondary references:

71280		D.C. Blackburn, L. Roberts, M. C. Vallejo-Pareja and E. L. Stanley. 2019. First Record of the Anuran Family Rhinophrynidae from the Oligocene of Eastern North America . Journal of Herpetology 53(4):316-323 [P. Holroyd/P. Holroyd]
58392		J. R. Bourque. 2013. Fossil Kinosternidae from the Oligocene and Miocene of Florida, USA. In D. B. Brinkman, P. A. Holroyd, and J. Gardner (eds.), Morphology and Evolution of Turtles, Vertebrate Paleobiology and Paleoanthropology 459-475 [P. Holroyd/P. Holroyd]
59473		K. Chovanec. 2014. East Tennessee State University. [P. Barrett/T. Cleary]
32917		C. W. Cooke. 1942. Cenozoic irregular echinoids of the Eastern United States. Journal of Paleontology 16:1-62 [L. Villier/L. Villier]
7290		N. J. Czaplewski and G. Morgan. 2002. Phyllostomatid bats from the Oligocene and early Miocene of Florida. Journal of Vertebrate Paleontology 22(3):48A [J. Alroy/J. Alroy/J. Alroy]
84078		A. K. Hastings, B. W. Schubert, J. R. Bourque and R. C. Hulbert, Jr. 2023. Oldest record of Alligator in southeastern North America. Palaeontologia Electronica 26(1):a6:1-19 [P. Mannion/P. Mannion]
50261		J. I. Mead. 2013. Scolecophidia (Serpentes) of the late Oligocene and early Miocene, North America, and a fossil history overview. Geobios 46:225-231 [J. Bloch/R. Hulbert]
85393		G. S. Morgan, N. J. Czaplewski, and N. B. Simmons. 2019. A New Mormoopid Bat from the Oligocene (Whitneyan and Early Arikareean) of Florida, and Phylogenetic Relationships of the Major Clades of Mormoopidae (Mammalia: Chiroptera). Bulletin of the American Museum of Natural History 434:1-146 [B. Allen/B. Allen]
59566		E. T. Whiting, D. W. Steadman, and K. A. Vliet. 2016. Cranial Polymorphism and Systematics of Miocene and Living Alligator in North America. Journal of Herpetology 50(2):306-315 [P. Mannion/P. Mannion]