PBDB Collection

CIT loc. 1159, Dayton Canyon (Cretaceous of the United States)

Also known as LACMIP loc. 10715; LACIMP loc. 6965 [erroneously? listed as UCLA 6965 in Squires & Stacheson 2017); CSUN loc. 175; CAS 699

Where: Los Angeles County, California (34.2° N, 118.7° W: paleocoordinates 40.1° N, 88.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Metaplacenticeras pacificum ammonoid zone, Chatsworth Formation, Late/Upper Campanian (83.5 - 70.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Collected by W.P. Popenoe, H.L. Popenoe, R. Durbin in 1935; reposited in the LACM

Collection methods: surface (in situ)

Primary reference: W. P. Popenoe. 1942. Upper Cretaceous formations and faunas of southern California. Bulletin of the American Association of Petroleum Geologists 26(2):162-187 [J. Marcot/J. Marcot]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 185168: authorized by Matthew Clapham, entered by Matthew Clapham on 14.04.2017, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Gastropoda
Epitonioidea - Epitoniidae	Acirsa nexilia¹³, Belliscala suciense¹³ Acirsa nexilia¹³ White 1889 wentletrap Belliscala suciense¹³ Squires and Saul 2003 wentletrap
Sorbeoconcha - Capulidae	"Lysis californiensis" = Lysis suciensis⁸ "Lysis californiensis" = Lysis suciensis⁸ Whiteaves 1879 snail
Sorbeoconcha - Naticidae	Gyrodes (Sohlella) pacificus⁵, Gyrodes expansa Gyrodes (Sohlella) pacificus⁵ Popenoe et al. 1987 moon snail Gyrodes expansa Gabb 1864 moon snail
Sorbeoconcha - Aporrhaidae	Anchura phaba² Anchura phaba² Elder and Saul 1996 snail
Neogastropoda - Ptychatractidae	Exilia stechesonae n. sp.¹⁴ Exilia stechesonae n. sp.¹⁴ Squires and Stecheson 2017 snail
Neogastropoda - Perissityidae	Zinsitys kingii⁷, Perissitys pacifica n. sp.⁴, Murphitys corona⁴ Zinsitys kingii⁷ Gabb 1864 snail Perissitys pacifica n. sp.⁴ Popenoe and Saul 1987 snail Murphitys corona⁴ Popenoe and Saul 1987 snail "probably this species"
Neogastropoda - Volutidae	Volutoderma angelica n. sp.¹¹ Volutoderma angelica n. sp.¹¹ Saul and Squires 2008 volute
Neogastropoda - Mitridae	Paleofusimitra sp.⁹ Paleofusimitra sp.⁹ Sohl 1963 mitre shell as Paleofusimitra n. sp.
Sorbeoconcha - Cassidae	Haydenia impressa⁹ Haydenia impressa⁹ Gabb 1864 snail
Cerithioidea - Turritellidae	Turritella chicoensis⁹ Turritella chicoensis⁹ Gabb 1864 turret shell as Turritella chicoensis pescaderoensis
Trochoidea - Turbinidae	"Margarites ornatissima" = Atira ornatissima "Margarites ornatissima" = Atira ornatissima Gabb 1864 snail
Heterostropha - Ringiculidae	"Oligoptycha obliqua" = Biplica obliqua "Oligoptycha obliqua" = Biplica obliqua Gabb 1864 snail
Bivalvia
Nuculida - Nuculidae	"Acila demessa" = Acila (Truncacila) demessa "Acila demessa" = Acila (Truncacila) demessa Finlay 1927 divaricate nutclam
Arcida - Glycymerididae	"Glycymeris veatchii" = Glycymerita veatchii¹² "Glycymeris veatchii" = Glycymerita veatchii¹² Gabb 1864 clam hypotype and as "Glycymeris veatchii var. anae"
Arcida - Parallelodontidae	? Indogrammatodon cf. vancouverensis⁹ ? Indogrammatodon cf. vancouverensis⁹ Meek 1858 clam
Arcida - Cucullaeidae	"Cucullaea (Idonearca) cordiformis" = Cucullaea cordiformis⁹, "Cucullaea youngi" = Cucullaea (Idonearca) youngi "Cucullaea (Idonearca) cordiformis" = Cucullaea cordiformis⁹ Packard 1922 clam "Cucullaea youngi" = Cucullaea (Idonearca) youngi Waring 1917 clam
Myalinida - Inoceramidae	Inoceramus cf. subundatus³ Inoceramus cf. subundatus³ Meek 1861 clam
Trigoniida - Steinmanellidae	Yaadia robusta n. sp.⁶ Yaadia robusta n. sp.⁶ Saul 1978 clam
Carditida - Crassatellidae	? Crassatella elongata⁹, Crassatella lomana, Crassatella (Crassatella) cf. conradiana⁹ ? Crassatella elongata⁹ Anderson 1958 clam Crassatella lomana Cooper 1894 clam Crassatella (Crassatella) cf. conradiana⁹ Gabb 1864 clam
Cardiida - Cardiidae	Protocardia (Pachycardium) cf. placerensis⁹ Protocardia (Pachycardium) cf. placerensis⁹ Gabb 1864 cockle
Cardiida - Tancrediidae	Meekia (Mygallia) daileyi¹⁰ Meekia (Mygallia) daileyi¹⁰ Saul and Popenoe 1962 clam
Cardiida - Arcticidae	Etea angulata⁹ Etea angulata⁹ Packard 1922 clam
Cardiida - Veneridae	"Trigonocallista bowersiana" = Calva (Egelicalva) bowersiana, "Flaventia lens" = Paraesa lens "Trigonocallista bowersiana" = Calva (Egelicalva) bowersiana Cooper 1894 venus clam "Flaventia lens" = Paraesa lens Gabb 1864 venus clam
Cardiida - Mactridae	Cymbophora triangulata⁹, Cymbophora ashburnerii, Cymbophora popenoei⁹, Cymbophora gabbiana, Cymbophora cf. stantoni⁹ Cymbophora triangulata⁹ Waring 1917 clam Cymbophora ashburnerii Gabb 1864 clam Cymbophora popenoei⁹ Saul 1974 clam Cymbophora gabbiana Anderson 1902 clam Cymbophora cf. stantoni⁹ Arnold 1908 clam
Cephalopoda
Ammonitida - Placenticeratidae	Metaplacenticeras bowersi n. sp.¹ Metaplacenticeras bowersi n. sp.¹ Anderson 1958 ammonite Matsumoto 1960 lists Metaplacenticeras pacificum. Unclear whether this is a reidentification, taxonomic opinion, or just missed it
Ammonitida - Pachydiscidae	"Anapachydiscus arrialoorensis" = Menuites arrialoorensis⁹ "Anapachydiscus arrialoorensis" = Menuites arrialoorensis⁹ Stoliczka 1865 ammonite
Ammonitida - Desmoceratidae	Desmophyllites diphylloides⁹ Desmophyllites diphylloides⁹ Forbes 1846 ammonite
Ammonitida - Diplomoceratidae	? Solenoceras sp.⁹, ? Neocrioceras sp.⁹ ? Solenoceras sp.⁹ Conrad 1860 ammonite ? Neocrioceras sp.⁹ ammonite
Ammonitida - Baculitidae	Baculites cf. inornatus³ Baculites cf. inornatus³ Meek 1862 ammonite

¹Anderson 1958; ²Elder and Saul 1996; ³Matsumoto 1960; ⁴Popenoe and Saul 1987; ⁵Popenoe et al. 1987; ⁶Saul 1978; ⁷Saul 1988; ⁸Saul 1991; ⁹Saul and Alderson 1981; ¹⁰Saul and Popenoe 1962; ¹¹Saul and Squires 2008; ¹²Squires 2010; ¹³Squires and Saul 2003; ¹⁴Squires and Stecheson 2017