PBDB Collection

Casa Blanca (Eocene of the United States)

Also known as TMM 42486; Spillway Quarry

Where: Webb County, Texas (27.5° N, 99.4° W: paleocoordinates 29.5° N, 89.8° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Laredo Formation, Late/Upper Uintan (46.2 - 39.7 Ma)

• Uinta C

Environment/lithology: estuary or bay; sandstone

• "tropical coastal conditions... mangrove swamp... estuarine" (Westgate 1989)

• "massive sandstone, fine-grained"

Size classes: macrofossils, mesofossils

Reposited in the TMM

Collection methods: bulk, quarrying, sieve,

• "Vertebrates were recovered by plaster jacketing and bulk sampling. More than 5,000 kg of sediment was screen-washed... [using] fine screen with a mesh of 11 x 7 threads /cm2"

Primary reference: J. W. Westgate. 1988. Biostratigraphic implications of the first Eocene land-mammal fauna from the North American coastal plain. Geology 16:995-998 [J. Alroy/J. Alroy/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 16542: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Mark Uhen and Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

• two isolated specimens are from nearby TMM 41871 and TMM 42185, which are in the same unit

•Westgate 1990 reports NISP 101 excluding rodents and indeterminate records; later publications report 288, for a total of 389 plus two species lacking counts; Westgate 1988 reports "nearly 700" and Westgate 1990 "over 700," and I believe the discrepancy is due to counting indeterminate specimens

•said to be Uinta C

Show authors, comments, and common names

unclassified
-	Spinizoncolpites prominatus⁸, Langiopollis eocaenica⁸, Paraoreomunea sp.⁸, Leea sp.⁸ Spinizoncolpites prominatus⁸ Langiopollis eocaenica⁸ Paraoreomunea sp.⁸ Leea sp.⁸
Polypodiopsida
Schizaeales - Polypodiidae	Lygodiumsporites adriennis⁸ Lygodiumsporites adriennis⁸
Polypodiales - Polypodiidae	Pteris dentata⁸ Pteris dentata⁸
Angiospermae
Malvales - Bombacaceae	Bombacacidites paulus⁸ Bombacacidites paulus⁸
Mesangiosperms - Arecaceae	Spinizonocolpites prominatus³, Nypa sp.³ Spinizonocolpites prominatus³ palm Nypa sp.³ van Wurmb 1779 palm
Lycopodiopsida
Selaginellales - Selaginellaceae	Selaginella sp.⁸ Selaginella sp.⁸ Beauvois 1804 spikemoss
Malacostraca
Decapoda -	Decapoda indet.⁸ Decapoda indet.⁸ Latreille 1802 decapod
Deuteropoda
-	Ostracoda indet.⁸ Ostracoda indet.⁸ Latreille 1802 ostracod
Ostracoda
Podocopida - Bythocyprididae	Bythocypris indet.⁸ Bythocypris indet.⁸ Brady 1880 ostracod
Bivalvia
Mytilida - Mytilidae	? Brachidontes sp.⁸ ? Brachidontes sp.⁸ Swainson 1840 mussel
Ostreida - Ostreidae	Crassostrea amichel⁸ Crassostrea amichel⁸ oyster
Gastropoda
Sorbeoconcha - Naticidae	Naticidae indet.⁸ Naticidae indet.⁸ Guilding 1834 moon snail
Cerithioidea - Turritellidae	Turritella cortezi⁸ Turritella cortezi⁸ turret shell
Mammalia
Condylarthra - Hyopsodontidae	Hyopsodus cf. uintensis Hyopsodus cf. uintensis Osborn 1902 condylarth
Chiroptera -	Chiroptera indet.¹¹ Chiroptera indet.¹¹ Blumenbach 1779 bat
Soricomorpha - Geolabididae	Centetodon pulcher Centetodon pulcher Marsh 1872 placental
Ferae -	Procynodictis cf. vulpiceps Procynodictis cf. vulpiceps Wortman and Matthew 1899 placental
Carnivora - Miacidae	cf. Miocyon sp.¹ cf. Miocyon sp.¹ Matthew 1909 carnivoran
Acreodi -	cf. Simidectes magnus cf. Simidectes magnus Peterson 1919 mesonychian
Acreodi - Mesonychidae	cf. Harpagolestes uintensis¹⁰, Harpagolestes cf. uintensis¹⁰ cf. Harpagolestes uintensis¹⁰ Scott 1888 condylarth Harpagolestes cf. uintensis¹⁰ Scott 1888 condylarth
Artiodactyla - Leptochoeridae	Laredochoerus edwardsi n. gen. n. sp.⁸, Laredochoerus edwardsi n. sp.⁷ Laredochoerus edwardsi n. gen. n. sp.⁸ Westgate 1994 even-toed ungulate Laredochoerus edwardsi n. sp.⁷ Westgate 1994 even-toed ungulate
Artiodactyla - Agriochoeridae	Protoreodon petersoni, Protoreodon parvus⁸ Protoreodon petersoni Gazin 1955 agriochoerid Protoreodon parvus⁸ Scott and Osborn 1887 agriochoerid
Artiodactyla - Protoceratidae	Leptoreodon leptolophus, Leptoreodon pusillus, Toromeryx cf. marginensis Leptoreodon leptolophus Golz 1976 protoceratid additional specimen from TMM 41871 described by Wilson 1984 Leptoreodon pusillus Golz 1976 protoceratid Toromeryx cf. marginensis Wilson 1974 protoceratid
Perissodactyla - Equidae	Epihippus sp.¹¹ Epihippus sp.¹¹ Marsh 1878 horse
Perissodactyla - Hyracodontidae	? Triplopus sp.⁸ ? Triplopus sp.⁸ Cope 1880 odd-toed ungulate
Perissodactyla - Amynodontidae	Amynodon advenus Amynodon advenus Marsh 1875 odd-toed ungulate also present at TMM 42185
Perissodactyla - Brontotheriidae	Notiotitanops mississippiensis¹⁰ Notiotitanops mississippiensis¹⁰ Gazin and Sullivan 1942 brontothere
Primates -	Mahgarita cf. stevensi¹¹ Mahgarita cf. stevensi¹¹ Wilson and Szalay 1976 primate
Primates - Omomyidae	Macrotarsius cf. jepseni, "? Mytonius sp. n. sp." = Ourayia⁸, Omomys cf. carteri¹² Macrotarsius cf. jepseni Robinson 1968 tarsier "? Mytonius sp. n. sp." = Ourayia⁸ Gazin 1958 tarsier Omomys cf. carteri¹² Leidy 1869 tarsier
Primates - Microsyopidae	Microsyops sp. Microsyops sp. Leidy 1872 primate
Rodentia - Ischyromyidae	Ischyromyidae indet., Mytonomys cf. robustus, Microparamys sp., Thisbemys sp. Ischyromyidae indet. Alston 1876 rodent two forms Mytonomys cf. robustus Peterson 1919 rodent Microparamys sp. Wood 1959 rodent not Laredomys Thisbemys sp. Wood 1959 rodent
Rodentia -	cf. Nonomys sp.⁸ cf. Nonomys sp.⁸ Emry and Dawson 1973 rodent
Rodentia - Laredomyidae	Laredomys riograndensis n. sp.¹³ Laredomys riograndensis n. sp.¹³ Wilson and Westgate 1991 rodent may include unidentified mammal, said to be new
Rodentia - Sciuravidae	Pauromys simplex n. sp.⁴ Pauromys simplex n. sp.⁴ Walton 1993 rodent
Rodentia - Cylindrodontidae	Cylindrodontidae indet. Cylindrodontidae indet. Miller and Gidley 1918 rodent said to be new
Rodentia - Eutypomyidae	Microeutypomys karenae n. sp.⁵ Microeutypomys karenae n. sp.⁵ Walton 1993 rodent
Sirenia - Sirenia	Sirenia indet. Sirenia indet. sirenian
Tribosphenida - Herpetotheriidae	Peratherium comstocki, Herpetotherium marsupium¹ Peratherium comstocki Cope 1884 marsupial Herpetotherium marsupium¹ Troxell 1923 marsupial
Reptilia
Squamata - Anguidae	Glyptosaurinae indet.⁶, Glyptosaurinae indet.⁹ Glyptosaurinae indet.⁶ Marsh 1872 squamates Glyptosaurinae indet.⁹ Marsh 1872 squamates
Squamata - Palaeophiidae	Pterosphenus schucherti⁶, Pterosphenus schucherti⁹ Pterosphenus schucherti⁶ Lucas 1898 snake Pterosphenus schucherti⁹ Lucas 1898 snake
Crocodylia - Alligatoridae	Caimaninae indet.⁹, Allognathosuchus sp.⁶ Caimaninae indet.⁹ Brochu 1999 crocodilian Allognathosuchus sp.⁶ Mook 1921 crocodilian
Crocodylia - Planocraniidae	"Pristichampsus cf. vorax" = Boverisuchus vorax⁶ "Pristichampsus cf. vorax" = Boverisuchus vorax⁶ Troxell 1925 crocodilian
Aves
-	Aves indet.⁶ Aves indet.⁶ Linnaeus 1758 bird
Neornithes -	Gruiformes indet.⁸ Gruiformes indet.⁸ Bonaparte 1854 bird
Reptilia
Testudines - Trionychidae	Trionychidae indet.² Trionychidae indet.² Gray 1825 softshell turtle
Testudines - Carettochelyidae	cf. Allaeochelys sp.⁶ cf. Allaeochelys sp.⁶ Noulet 1867 turtle
Testudines - Kinosternoidea	Xenochelys sp.⁶, cf. Baptemys sp.⁶ Xenochelys sp.⁶ Hay 1906 mud turtle cf. Baptemys sp.⁶ Leidy 1870 mud turtle
Testudines - Emydidae	Emydidae indet.⁶ Emydidae indet.⁶ Rafinesque 1815 turtle
Testudines - Pantestudinidae	Hadrianus sp.⁶ Hadrianus sp.⁶ Cope 1872 turtle
Amphibia
Salientia -	Anura indet.⁶ Anura indet.⁶ frog
Actinopteri
Lepisosteiformes - Lepisosteidae	Lepisosteus sp.⁶ Lepisosteus sp.⁶ Agassiz 1843 gar
Perciformes -	Diaphyodus wilsoni n. sp.⁶ Diaphyodus wilsoni n. sp.⁶ perch-like fish
Acanthomorphata - Sciaenidae	Jefitchia sp.⁶ Jefitchia sp.⁶ Frizzell and Dante 1965
Siluriformes - Ariidae	cf. Arius sp.⁶ cf. Arius sp.⁶ Cuvier and Valenciennes 1840 Ariid catfish
Acanthopterygii -	Cylindracanthus sp.⁹ Cylindracanthus sp.⁹ Leidy 1856
Elopiformes - Megalopidae	Megalopidae indet.⁶ Megalopidae indet.⁶ Jordan 1923
Elopiformes - Phyllodontidae	cf. Paralbula marylandica⁶ cf. Paralbula marylandica⁶ Blake 1940
Chondrichthyes
Lamniformes - Mitsukurinidae	Striatolamia macrota⁶, Striatolamia macrota⁸ Striatolamia macrota⁶ Agassiz 1838 goblin shark Striatolamia macrota⁸ Agassiz 1838 goblin shark
Carcharhiniformes - Carcharhinidae	Carcharhinus sp.⁶, Carcharhinus sp.⁸ Carcharhinus sp.⁶ de Blainville 1816 requiem shark [entered as Carcarhinus sp.] Carcharhinus sp.⁸ de Blainville 1816 requiem shark
Carcharhiniformes - Galeocerdidae	Galeocerdo eaglesomei⁶, Galeocerdo eaglesomei⁸ Galeocerdo eaglesomei⁶ White 1926 tiger shark Galeocerdo eaglesomei⁸ White 1926 tiger shark
Rhinopristiformes - Pristidae	Pristis sp.⁶, Pristis sp.⁸ Pristis sp.⁶ Linck 1790 sawfish Pristis sp.⁸ Linck 1790 sawfish
Myliobatiformes - Rhinopteridae	Rhinoptera sp.⁶ Rhinoptera sp.⁶ Cuvier 1829 cownose ray
Myliobatiformes - Myliobatidae	Myliobatis sp.⁶ Myliobatis sp.⁶ Cuvier 1816 eagle ray
Myliobatiformes - Dasyatidae	Dasyatis sp.⁶ Dasyatis sp.⁶ Rafinesque 1810 whiptail stingray
Rajiformes - Rhinobatidae	Rhinobatos sp.⁶ Rhinobatos sp.⁶ Link 1790 guitarfish

¹Alroy 2002; ²Alroy 2006; ³Gee 2001; ⁴Walton 1993; ⁵Walton 1993; ⁶Westgate 1989; ⁷Westgate 1994; ⁸Westgate 2001; ⁹Westgate 2008; ¹⁰Westgate 2009; ¹¹Westgate 2012; ¹²Williams and Kirk 2008; ¹³Wilson and Westgate 1991