PBDB Collection

Tri-Britton (Pleistocene of the United States)

Where: Hendry County, Florida (26.5° N, 81.2° W: paleocoordinates 26.5° N, 81.0° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Irvingtonian (1.8 - 0.3 Ma)

• from a "two to three meter-thick bed"

• bed-level stratigraphic resolution

Environment/lithology: fluvial; shelly/skeletal sandstone

• "high energy fluvial deposit formed during an interval of relatively low sea level, as the marine mollusk shells and chondrichthyan teeth appear to be re-worked"

• "shelly, medium- to coarse-grained, quartz sand"

Size class: macrofossils

Collection methods: salvage, quarrying,

Primary reference: M. Meers and R. Hulbert. 2002. A new middle Pleistocene local fauna from southwestern Florida. Journal of Vertebrate Paleontology 22(3):87A [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 26550: authorized by John Alroy, entered by John Alroy on 16.10.2002, edited by Evangelos Vlachos and Mark Uhen

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Actinopteri
Lepisosteiformes - Lepisosteidae	Lepisosteus sp. Lepisosteus sp. Agassiz 1843 gar
Reptilia
Crocodylia - Alligatoridae	Alligator sp. Alligator sp. Daudin 1809 alligator
Testudines - Trionychidae	Apalone sp. Apalone sp. Rafinesque 1832 softshell turtle
Testudines - Testudinidae	Hesperotestudo sp., Gopherus polyphemus¹ Hesperotestudo sp. Williams 1950 turtle Gopherus polyphemus¹ Daudin 1802 Florida gopher tortoise The small sample includes one NUCH (UF 209990), several carapacial elements (costal, peripherals, and bridge elements), one right EPI (UF 210862), one ENT (UF208986), two HYPO (UF 209990, 209098), and three XIPH (UF 209098, 209991).
Testudines - Emydidae	Pseudemys sp. Pseudemys sp. Gray 1856 cooter
Mammalia
Proboscidea - Elephantidae	Mammuthus sp. Mammuthus sp. Brookes 1828 mammoth
Proboscidea - Mammutidae	Mammut sp. Mammut sp. Blumenbach 1799 mastodon
Rodentia - Castoridae	Castoroides dilophidus² Castoroides dilophidus² Martin 1969 giant beaver
Artiodactyla - Camelidae	Palaeolama sp. Palaeolama sp. Gervais 1869 camel
Perissodactyla - Equidae	Equus sp. Equus sp. Linnaeus 1758 horse
Perissodactyla - Tapiridae	Tapirus sp. Tapirus sp. Brisson 1762 tapir
Cingulata - Pampatheriidae	Holmesina sp. Holmesina sp. Simpson 1930 edentate
Megatherioidea - Megalonychidae	Megalonyx sp. Megalonyx sp. Harlan 1825 edentate
- Mylodontidae	Paramylodon sp. Paramylodon sp. Brown 1903 edentate

¹Franz and Quitmyer 2005; ²Hulbert et al. 2014