OCCASIONAL PAPERS OF THE CALIFORNIA ACADEMY OF SCIENCES 
Number 159 
stone as the Repetto Member of the Fernando Formation whereas in the vicinity of the Palos Verdes Peninsula, 
Dibblee (1999) divided the Fernando Formation into a Late Pliocene upper unit, the Pico Member, and a lower 
unnamed unit of early Pliocene age. In the northern Santa Ana Mountains, Schoellhamer et al. (1981) recog¬ 
nized the Fernando Formation to be formed of two unnamed units, a lower member of early Pliocene age and 
an upper member of Late Pliocene age. In his analysis of the eastern Ventura (Ridge) Basin, Crowell (2003) 
followed Yeats et al. (1994) and assigned the name Fernando Formation to what was formerly called Pico 
Formation by Winterer and Durham (1962). Squires et al. (2006) recognized the Pico Formation as a Late 
Pliocene unit in the Ventura Basin and made no mention of the Fernando Formation. As a compromise, we fol¬ 
low Blake (1991) and recognize the Fernando, Pico, and Repetto Formations as separate units in the Los 
Angeles Basin and vicinity. 
The accepted age of a stratigraphic unit often changes after further study of its fossil content, lithology, 
geopolarity, etc. We take a conservative approach and give an age range (e.g., Plio-Pleistocene) when there is 
ambiguity in the literature, or if the unit was deposited over more than one epoch and we are not sure in which 
part of the unit the fossil fish was collected. In general, we follow Blake (1991) for the chronostratigraphy of 
the Los Angles Basin and vicinity. 
Organization of the Catalog 
With few exceptions, we have followed the systematic classification presented by Nelson (2006). The 
exceptions usually include a revised classification based on new molecular evidence (e.g., placing billfishes in 
the Xiphioidei rather than Scombroidei). 
Each species account contains a selected synonymy and references, brief description and museum number 
for the holotype (and paratypes, if named), the type locality (locality number, geographical setting, geological 
formation, and age), all referred specimens with locality data taken from each author listed in the synonymy 
and references, and a general remarks section. We provide a photograph of each fossil holotype, if its where¬ 
abouts is known, but do not include photographs of extant holotypes. Because some workers assigned a taxon 
to a different family than the one to which we assign it in this catalog, we have included the original family 
designation in bold (e.g., Cybiidae) at the end of each author’s entry. 
Institutional abbreviations are defined on page nine and then the abbreviations are used throughout the 
document. An Appendix that consists of a catalog summary in tabular form follows the literature cited. 
Geographic, stratigraphic and systematic indices are provided. 
Catalog Summary 
The specimens in the catalog represent 26 orders, 74 families, 176 genera, and 214 species (Appendix). 
Some published accounts only identified the specimens to order and family (e.g., Acipenseriformes, 
Acipenseridae) and other accounts to order, family, and genus (e.g., Clupeiformes, Clupeidae, tEtringus). Most 
taxa are identified to order, family, genus, and species (e.g., Albuliformes, Halosauridae, |Laytonia californi- 
ca David), although a few are identified as a species-like taxon (e.g., Cypriniformes, Catostomidae, Chamistes 
cf. C. cujus Cope). 
Seventy of the fossil holotypes are housed at CAS, 28 at LACM, and five in four institutions outside of 
California. Twenty-one of the fossil holotypes and 145 of the referred specimens are lost or misplaced (desig¬ 
nated as ‘whereabouts unknown’). Most of the latter specimens were studied by Jordan and/or Gilbert and/or 
David. They were part of the Stanford University collection then, but we do not know whether they were lost 
in transit to CAS or if they were ever included in the donation. 
Of 170 taxa that were collected in Miocene or Mio-Pliocene strata, only six are extant. In contrast, of the 
74 taxa that were collected in Pliocene and Plio-Pleistocene strata, 45 are extant. Two hundred and fifty-four 
taxa were collected in marine deposits, whereas only 28 taxa were found in freshwater deposits. Only one 
species, Gasterosteus aculeatus Linnaeus, was collected in both freshwater and marine deposits. One hundred 
and thirty-four taxa were identified from imprints (counterparts), 84 from otoliths, 44 from scales, 26 from 
bones, and eight from teeth. Twenty-eight taxa were identified from a combination of elements (e.g., counter¬ 
parts and otoliths, or counterparts and scales, or scales and otoliths, etc.). 
