Tapo Canyon (Upper): Uintan, California

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
? Helminthoglypta stocki
Roth 1988
Amphibia - Temnospondyli
Anura indet. (Fischer von Waldheim 1813)
Mammalia - Rodentia - Ischyromyidae
Microparamys woodi Kelly and Whistler 1994
Kelly and Whistler 1994 2 specimens
"M. sp. D" of Wood 1962; probably "Paramys cf. minutus" ( of Wilson 1940a
Ischyrotomus tapensis n. sp. Wilson 1940
Wilson 1940 12 specimens
recombined as Tapomys tapensis
(5 measurements)
Eohaplomys tradux n. sp. Stock 1935
2 specimens
from CIT 180: see Stock 1935a; (1 measurement)
Leptotomus cf. caryophilus Wilson 1940
Ischyrotomus compressidens (Peterson 1919)
original and current combination Paramys compressidens
Leptotomus cf. leptodus (Cope 1873)
original and current combination Paramys leptodus
Mammalia - Rodentia - Simimyidae
Simimys simplex (Wilson 1935)
1 specimen
includes type of "S. murinus" from CIT 180 of Wilson 1949a; see Lillegraven and Wilson 1977
? Simimys murinus n. sp. Wilson 1949
Mason and Swisher 1989
synonym of Simimys simplex
Mammalia - Primates - Microsyopidae
Craseops sylvestris n. gen., n. sp. Stock 1934
Stock 1934 2 specimens
from CIT 180: see Stock 1934b; (6 measurements)
Mammalia - Primates - Omomyidae
Yaquius travisi Mason 1990
Mason 1990 7 specimens
"Omomyid n. gen. and sp." of Kelly 1990; CIT 180 (1 measurement)
Phenacolemur shifrae Krishtalka 1978
1 specimen
described by Mason 1990; CIT 180
    = Walshina esmaraldensis n. gen., n. sp. López-Torres et al. 2018
López-Torres et al. 2018
Dyseolemur pacificus n. sp. Stock 1934
5 specimens
from CIT 180: see Stock 1934a;
Mammalia - Sespedectidae
Sespedectes singularis Stock 1935
34 specimens
Novacek 1976
Proterixoides sp. Stock 1935
53 specimens
    = Proterixoides davisi Stock 1935
Novacek 1985
Mammalia - Perissodactyla
Dilophodon sp. Scott 1883
Stock 1936 1 specimen
    = informal Colbert tapirid sp.
Colbert and Schoch 1998
specimen from CIT 180 described by Stock 1936c
    = cf. Hesperaletes sp. Colbert 2006
Colbert 2006
Mammalia - Diacodexeidae
Hyopsodus egressus n. sp. Stock 1934
Stock 1934 8 specimens
recombined as Tapochoerus egressus
from CIT 180: see Stock 1934b; (Stock), @24 (Golz) (1 measurement)
Mammalia - Protoceratidae
Leptoreodon (Hesperomeryx) edwardsi n. sp. Stock 1936
100 specimens
from CIT 180: see Stock 1936b; ("no less than": Stock), @1120 (Golz) (5 measurements)
Mammalia - Agriochoeridae
Protoreodon pumilus (Marsh 1875)
NISP @50 ("approximately 50": Golz)
Mammalia - Praetragulidae
Simimeryx sp. Stock 1934
Kelly 1990
said to be new
Mammalia
cf. Plesiomiacis progressus (Stock 1935)
recombined as Procynodictis progressus
? Miacis hookwayi n. sp. Stock 1934
Stock 1934 1 specimen
from CIT 180: see Stock 1934c; (1 measurement)
Tapocyon occidentalis n. gen., n. sp. Stock 1934
Stock 1934 7 specimens
from CIT 180: see Stock 1934c; (1 measurement)
    = Tapocyon robustus Peterson 1919
Wesley and Flynn 2003
Mammalia - Apatemyidae
Apatemys downsi n. sp. Gazin 1958
1 specimen
from CIT 180; see Gazin 1958a ( Kelly 1990 lists A. bellus
Mammalia
Peratherium knighti McGrew et al. 1959
1 specimen
recombined as Herpetotherium knighti
probably "P. sp." of Stock 1936a from CIT 180
Reptilia - Testudines - Testudinidae
Testudo sp. Linnaeus 1758
Reptilia - Testudines - Trionychidae
Trionychidae indet. Gray 1825
Reptilia - Testudines
Chelonia indet. (Latreille 1800)
synonym of Testudines
Reptilia - Ophidia
Ophidia indet. Latreille 1804
Reptilia - Boidae
Boidae indet. Gray 1825
Reptilia
Boavus affinis n. sp. Brattstrom 1955
Brattstrom 1955
synonym of Boavus occidentalis
Reptilia - Lacertilia
Lacertilia indet. Owen 1842
Reptilia
Saniwa brooksi Brattstrom 1955
synonym of Saniwa ensidens
Peltosaurus macrodon n. sp. Brattstrom 1955
Brattstrom 1955
Reptilia - Anguidae
Anguidae indet. Gray 1825
Reptilia
Aves indet. Linnaeus 1758
see common names

Geography
Country:United States State/province:California County:Ventura
Coordinates: 34.3° North, 119.0° West (view map)
Paleocoordinates:34.5° North, 105.8° West
Basis of coordinate:based on political unit
Geographic resolution:small collection
Time
Period:Paleogene Epoch:Eocene
Stage:Lutetian 10 m.y. bin:Cenozoic 2
*Period:Tertiary
Key time interval:Uintan
Age range of interval:46.20000 - 40.40000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Sespe
Local section:SimiV Local bed:5
Local order:bottom to top
Lithology and environment
Primary lithology: not reported
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection size:1324 specimens
Reason for describing collection:general faunal/floral analysis
Museum repositories:CIT
Taxonomic list comments: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
Metadata
Also known as:CIT 180, 217 Tapo Canyon
Database number:16786
Authorizer:J. Alroy, P. Holroyd, J. Marcot Enterer:J. Alroy, P. Holroyd, J. Marcot
Modifier:J. Alroy Research group:vertebrate
Created:1993-02-18 00:00:00 Last modified:2009-03-15 22:05:06
Access level:the public Released:1993-02-18 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

1681. 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]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
696 B. H. Brattstrom. 1955. New snakes and lizards from the Eocene of California. Journal of Paleontology 29(1):145-149 [J. Alroy/M. Sommers/J. Alroy]
54688 M. W. Colbert. 2006. Hesperaletes (Mammalia : Perissodactyla), a new tapiroid from the middle Eocene of southern California. Journal of Vertebrate Paleontology 26(3):697-711 [J. Marcot/J. Marcot]
6231 M. W. Colbert and R. M. Schoch. 1998. Tapiroidea and other moropomorphs. In C. M. Janis, K. M. Scott, and L. L. Jacobs (eds.), Evolution of Tertiary mammals of North America 569-582 [J. Alroy/J. Alroy/J. Alroy]
2059 T. S. Kelly. 1990. Biostratigraphy of Uintan and Duchesnean land mammal assemblages from the Middle Member of the Sespe Formation, Simi Valley, California. Contributions in Science, Natural History Museum of Los Angeles County 419:1-42 [J. Alroy/J. Alroy/J. Marcot]
2074 T. S. Kelly and D. P. Whistler. 1994. Additional Uintan and Duchesnean (Middle and Late Eocene) mammals from the Sespe Formation, Simi Valley, California. Contributions in Science, Natural History Museum of Los Angeles County 439:1-29 [J. Alroy/J. Alroy/J. Marcot]
66860 S. López-Torres, M. T. Silcox, and P. A. Holroyd. 2018. New omomyoids (Euprimates, Mammalia) from the late Uintan of southern California, USA, and the question of the extinction of the Paromomyidae (Plesiadapiformes, Primates). Palaeontologia Electronica 21.3.37A:1-28 [P. Holroyd/P. Holroyd/P. Holroyd]
2452 M. A. Mason. 1990. New Fossil primates from the Uintan (Eocene) of southern California. PaleoBios 13(49):1-7 [J. Alroy/J. Alroy/J. Ju]
2453 M. A. Mason and C. C. Swisher. 1989. New evidence for the age of the South Mountain local fauna, Ventura County, California. Contributions in Science, Natural History Museum of Los Angeles County 410:1-9 [J. Alroy/J. Alroy/P. Holroyd]
2665 M. J. Novacek. 1985. The Sespedectinae, a new subfamily of hedgehog-like insectivores. American Museum Novitates 2822:1-24 [J. Alroy/J. Alroy/K. Beard]
61265 B. Roth. 1988. Camaenid land snails (Gastropoda: Pulmonata) from the Eocene of southern California and their bearing on the history of the American Camaenidae. Transactions of the San Diego Society of Natural History 21(12):203-220 [P. Holroyd/P. Holroyd]
3262 C. Stock. 1934. Microsyopsinae and Hyopsodontidae in the Sespe Upper Eocene, California. Proceedings of the National Academy of Sciences 20(6):349-354 [J. Alroy/J. Alroy/J. Alroy]
3263 C. Stock. 1934. New creodonta from the Sespe upper Eocene, California. Proceedings of the National Academy of Sciences 20(7):423-427 [J. Alroy/J. Alroy/J. Marcot]
3275 C. Stock. 1936. Perissodactyla of the Sespe Eocene, California. Proceedings of the National Academy of Sciences 22(5):260-265 [J. Alroy/J. Alroy/J. Marcot]
3691 R. W. Wilson. 1940. Californian paramyid rodents. Carnegie Institution of Washington Publication 514(5):59-84 [J. Alroy/J. Alroy/J. Alroy]