Tapo Canyon (Upper) (Eocene of the United States)

Also known as CIT 180, 217 Tapo Canyon

Where: Ventura County, California (34.3° N, 119.0° W: paleocoordinates 34.5° N, 105.8° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Sespe Formation, Uintan (46.2 - 40.4 Ma)

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Reposited in the CIT

Primary reference: D. J. Golz and J. A. Lillegraven. 1977. Summary of known occurrences of terrestrial vertebrates from Eocene strata of southern California. Contributions to Geology, University of Wyoming 15(1):43-65 [J. Alroy/J. Alroy/J. Marcot]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 16786: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Patricia Holroyd and Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• appears to be at the level of LACM 5857 based on literal interpretation of scale in sections given by Kelly 1990 and Kelly et al. 1991
almost entirely from CIT 180, but some Kelly 1990 records may be from UCMP V-6103 or V-87155; CIT 217 of Golz and Lillegraven 1977, which yielded only "Artiodactyla indet."
NISP 1324+
record of ? Hyaenodontidae indet. is omitted by Kelly 1990

"cf. Sespedectes sp." is omitted by Kelly 1990

not clear what "cf. Hemiacodon sp." is

"Reithroparamyinae indet." is omitted by Kelly 1990
Aves
  -
Aves indet. Linnaeus 1758 bird
Reptilia
 Testudines - Testudinidae
Testudo sp. Linnaeus 1758 turtle
 Testudines - Trionychidae
Trionychidae indet. Gray 1825 softshell turtle
 Testudines -
"Chelonia indet." = Testudines
"Chelonia indet." = Testudines Batsch 1788 turtle
 Squamata -
"Saniwa brooksi" = Saniwa ensidens
"Saniwa brooksi" = Saniwa ensidens Leidy 1870 squamates
 Squamata - Anguidae
Anguidae indet. Gray 1825 squamates
 Squamata -
Peltosaurus macrodon n. sp.1 Brattstrom 1955 squamates
 Ophidia -
 Squamata - Boidae
Boidae indet. Gray 1825 boa
 Squamata -
"Boavus affinis n. sp." = Boavus occidentalis1
"Boavus affinis n. sp." = Boavus occidentalis1 Marsh 1871 snake
Mammalia
 Cimolesta - Apatemyidae
Apatemys downsi n. sp. Gazin 1958 eutherian
from CIT 180; see Gazin 1958a ( Kelly 1990 lists A. bellus
 Theriamorpha -
Tapocyon robustus11, "cf. Plesiomiacis progressus" = Procynodictis progressus, ? Miacis hookwayi n. sp.10
Tapocyon robustus11 Peterson 1919 placental
from CIT 180: see Stock 1934c;
"cf. Plesiomiacis progressus" = Procynodictis progressus Stock 1935 placental
? Miacis hookwayi n. sp.10 Stock 1934 placental
from CIT 180: see Stock 1934c;
 Perissodactyla -
cf. Hesperaletes sp.2 Colbert 2006 odd-toed ungulate
 Artiodactyla - Diacodexeidae
"Hyopsodus egressus n. sp." = Tapochoerus egressus9
"Hyopsodus egressus n. sp." = Tapochoerus egressus9 Stock 1934 even-toed ungulate
from CIT 180: see Stock 1934b; (Stock), @24 (Golz)
 Artiodactyla - Protoceratidae
Leptoreodon (Hesperomeryx) edwardsi n. sp. Stock 1936 protoceratid
from CIT 180: see Stock 1936b; ("no less than": Stock), @1120 (Golz)
 Artiodactyla - Praetragulidae
Simimeryx sp.3 Stock 1934 ruminant
said to be new
 Artiodactyla - Agriochoeridae
Protoreodon pumilus Marsh 1875 agriochoerid
NISP @50 ("approximately 50": Golz)
 Theriamorpha - Sespedectidae
Proterixoides davisi8 Stock 1935 placental
Sespedectes singularis Stock 1935 placental
Novacek 1976
 Rodentia - Ischyromyidae
Leptotomus cf. caryophilus, Eohaplomys tradux n. sp., Microparamys woodi4, "Ischyrotomus tapensis n. sp." = Tapomys tapensis12, "Ischyrotomus compressidens" = Paramys compressidens, "Leptotomus cf. leptodus" = Paramys leptodus
Leptotomus cf. caryophilus Wilson 1940 rodent
Eohaplomys tradux n. sp. Stock 1935 rodent
from CIT 180: see Stock 1935a;
Microparamys woodi4 Kelly and Whistler 1994 rodent
"M. sp. D" of Wood 1962; probably "Paramys cf. minutus" ( of Wilson 1940a
"Ischyrotomus tapensis n. sp." = Tapomys tapensis12 Wilson 1940 rodent
"Ischyrotomus compressidens" = Paramys compressidens Peterson 1919 rodent
"Leptotomus cf. leptodus" = Paramys leptodus Cope 1873 rodent
 Rodentia - Simimyidae
"Simimys simplex" = Simimys simplex, "? Simimys murinus n. sp." = Simimys simplex7
"Simimys simplex" = Simimys simplex Wilson 1935 rodent
includes type of "S. murinus" from CIT 180 of Wilson 1949a; see Lillegraven and Wilson 1977
"? Simimys murinus n. sp." = Simimys simplex7 Wilson 1935 rodent
 Primates - Omomyidae
Yaquius travisi6 Mason 1990 tarsier
"Omomyid n. gen. and sp." of Kelly 1990; CIT 180
Dyseolemur pacificus n. sp. Stock 1934 tarsier
from CIT 180: see Stock 1934a;
Walshina esmaraldensis n. gen. n. sp.5 López-Torres et al. 2018 tarsier
described by Mason 1990; CIT 180
 Primates - Microsyopidae
Craseops sylvestris n. gen. n. sp.9
Craseops sylvestris n. gen. n. sp.9 Stock 1934 primate
from CIT 180: see Stock 1934b;
 Theriamorpha - Herpetotheriidae
"Peratherium knighti" = Herpetotherium knighti
"Peratherium knighti" = Herpetotherium knighti McGrew et al. 1959 marsupial
probably "P. sp." of Stock 1936a from CIT 180
Amphibia
 Salientia -