{"elementGlobalId":103050,"circumscripConfidence":{"id":1,"circumscripConfidenceDescEn":"1 - Strong","circumscripConfidenceDescEs":"1 - Fuerte","circumscripConfidenceDescFr":"1 – Forte"},"classificationLevel":{"id":7,"classificationLevelNameEn":"Species","classificationLevelNameEs":"Especies","classificationLevelNameFr":"Espèce"},"classificationStatus":{"id":1,"classificationStatusDescEn":"Standard","classificationStatusDescEs":"Estándar","classificationStatusDescFr":"Standard"},"iucn":{"id":11,"iucnDescEn":"Least concern","iucnDescEs":"Menos preocupante","iucnDescFr":"Moins préoccupante","iucnCode":"LC"},"nameCategory":{"id":1,"nameCategoryDescEn":"Vertebrate Animal","nameCategoryDescEs":"Animal vertebrado","nameCategoryDescFr":"Animal vertébré","nameTypeCd":"A","nameTypeDesc":"Zoological"},"rankMethodUsed":null,"formattedScientificName":"<i>Petrosaurus mearnsi</i>","scientificName":"Petrosaurus mearnsi","scientificNameAuthor":"(Stejneger, 1894)","primaryCommonName":"Mearns's Rock Lizard","relatedItisNames":"<i>Petrosaurus mearnsi</i> (Stejneger, 1894) (TSN 173936)","uniqueId":"ELEMENT_GLOBAL.2.103050","elcode":"ARACF11010","conceptRefFullCitation":"Grismer, L. L. 1999. An evolutionary classification of reptiles on islands in the Gulf of California. Herpetologica 55:446-469.","conceptName":"<i>Petrosaurus mearnsi</i>","taxonomicComments":"This species formerly was included in the genus <i>Streptosaurus</i>. Grismer (1999) treated <i>P. mearnsi</i> and <i>P. slevini</i> as separate species. Gottscho (2015), based on RADseq data, found that <i>P. mearnsi</i> samples were divided into northern and southern clades and populations, with <i>P. slevini</i> included within the southern population and sister to the remaining members of that population (Nicholson 2025).","roundedGRank":"G4","conservationStatusFactorsEditionDate":"2005-07-06","conservationStatusFactorsEditionAuthors":"Hammerson, G.","primaryCommonNameLanguage":"EN","recordType":"SPECIES","elementNationals":[{"elementNationalId":166505,"classifConfidence":null,"nation":{"id":225,"nameEn":"United States","nameEs":"Estados Unidos","nameFr":"États-Unis","isoCode":"US","region":"United States"},"roundedNRank":"N4","elementSubnationals":[{"elementSubnationalId":355413,"subnation":{"id":7,"nameEn":"California","nameEs":"California","nameFr":"Californie","subnationCode":"CA","dnationId":225},"roundedSRank":"SNR","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"SNR","speciesSubnational":{"elementSubnationalId":355413,"hybrid":false,"exotic":false,"native":true}}],"nrankReviewYear":2005,"nrank":"N4","speciesNational":{"elementNationalId":166505,"exotic":false,"native":true}}],"lastModified":"2026-10-02T21:40:38.119151Z","lastPublished":"2026-10-02T21:32:08.892226Z","promotionalDescription":null,"conceptLineageSummary":null,"nsxUrl":"/Taxon/ELEMENT_GLOBAL.2.103050/Petrosaurus_mearnsi","grankAdjustmentReasons":null,"grankChangeDate":"1996-10-28","grankReviewDate":"2005-07-06","grankReasons":null,"grank":"G4","rankInfo":{"elementGlobalId":103050,"aooPercentGood":null,"enviromentalSpecificity":null,"intrinsicVulnerability":{"id":4,"intrinsicVulnerabilityDescEn":"Moderately vulnerable","intrinsicVulnerabilityDescEs":"Moderadamente vulnerable","intrinsicVulnerabilityDescFr":"Moyennement vulnérable"},"longTermTrend":{"id":38,"longTermTrendDescEn":"Decline of <30% to increase of 25%","longTermTrendDescEs":"Disminución de <30% a aumento de 25%.","longTermTrendDescFr":"Diminution de <30 % à augmentation de 25 %"},"numberEos":{"id":13,"numberEosDescEn":"81 - 300","numberEosDescEs":"De 81 a 300","numberEosDescFr":"De 81 à 300"},"numberGoodEos":null,"numberProtEos":null,"popSize":null,"rangeExtent":{"id":30,"rangeExtentDescEn":"20,000-200,000 square km (about 8000-80,000 square miles)","rangeExtentDescEs":"De 20.000 a 200.000 kilómetros cuadrados (aproximadamente 8.000 a 80.000.000 millas cuadradas)","rangeExtentDescFr":"De 20 000 à 200 000 km carrés (de 8 000 à 80 000 000 miles carrés approximativement)"},"shortTermTrend":{"id":40,"shortTermTrendDescEn":"Relatively Stable (<=10% change)","shortTermTrendDescEs":"Relativamente estable (variación = <10%)","shortTermTrendDescFr":"Relativement stable (variation = <10 %)"},"threatImpactAssigned":null,"rangeExtentComments":"The range extends from San Gorgonio Pass, Riverside County, California, south through the arid portions of the Peninsular Ranges to at least Bahia de los Angeles, Baja California, including the upper elevations of the Sierra las Pintas and the isolated El Pedregoso in Valle de Gato, Baja California; isolated populations on Mejia, Angel de la Guarda, and El Muerto islands in the Gulf of California (Grismer 2002, Stebbins 2003). Elevational range: from near sea level to around 3,600 feet (1,200 meters) (Grismer 2002, Stebbins 2003).","areaOfOccupancy":null,"areaOfOccupancyComments":null,"numberEosComments":"This species is represented by a large number of occurrences. Jennings (1990) mapped about 40 collection sites in Baja California and at least 25 in California.","popSizeComments":"Total adult population size is unknown but likely exceeds 10,000. The species is common or abundant in favorable habitat, such as cliffs and large rocks in canyon-bottom riparian zones (Grismer 2002).","viabilityComments":null,"threatImpactComments":"No major threats have been identified.","shortTermTrendComments":"Extent of occurrence, area of occupancy and population size are relatively large and appear to be stable.","longTermTrendComments":null,"inventoryNeeds":null,"numberProtEosComments":null,"protectionNeeds":null,"otherConsiderations":null,"intrinsicVulnerabilityComments":null,"enviromentalSpecificityComments":null},"animalCharacteristics":{"elementGlobalId":103050,"majorHabitat":{"id":3,"majorHabitatDescEn":"Terrestrial","majorHabitatDescEs":"Terrestre","majorHabitatDescFr":"Terrestre"},"nonMigrant":true,"localMigrant":false,"longDistanceMigrant":false,"mobilityMigrationComments":null,"foodHabitsComments":"Insects, spiders, blossoms, and buds (Stebbins 1985).","animalPhenologyComments":"Most active in the early morning (Behler and King 1979).","colonialBreeder":false,"length":29,"width":null,"weight":null,"animalPhenologies":[{"animalCagPhenologyId":102192,"animalPhenology":{"id":3,"animalPhenologyDescEn":"Diurnal","animalPhenologyDescEs":"Diurno","animalPhenologyDescFr":"Diurne","displayOrder":3},"adult":true,"immature":true}],"animalFoodHabits":[{"animalCagFoodHabitsId":104099,"foodHabits":{"id":3,"foodHabitsDescEn":"Invertivore","foodHabitsDescEs":"Invertívoro","foodHabitsDescFr":"Invertivore","displayOrder":3},"adult":true,"immature":true},{"animalCagFoodHabitsId":104100,"foodHabits":{"id":6,"foodHabitsDescEn":"Frugivore","foodHabitsDescEs":"Frugívoro","foodHabitsDescFr":"Frugivore","displayOrder":6},"adult":true,"immature":true}]},"occurrenceDelineations":[{"eoSpecsDetailId":1162,"locationUseClass":{"id":1,"locationUseClassDescEn":"Not applicable","locationUseClassDescEs":"No se aplica","locationUseClassDescFr":"Sans objet","displayOrder":1},"eoSpecGroupName":"Phrynosomatid Lizards","subtypes":null,"inferredExtentDistance":0.2,"inferredExtentNotes":null,"minimumEoCriteria":"Occurrences are based on evidence of historical presence, or current and likely recurring presence, at a given location. Such evidence minimally includes collection or reliable observation and documentation of one or more individuals (including eggs) in or near appropriate habitat where the species is presumed to be established and breeding.","mappingGuidance":null,"separationBarriers":"Busy highway or highway with obstructions such that lizards rarely if ever cross successfully; major river, lake, pond, or deep marsh; urbanized area dominated by buildings and pavement.","separationDistanceUnsuitableHabitatat":1.0,"separationDistanceSuitableHabitatat":5.0,"altSeparationProcedure":null,"separationJustification":"Phrynosomatid lizards have small home range sizes, usually less than 0.5 ha (often much less) and rarely more than 1 ha  (see examples in BCD EO Specs). In a study that documented exceptionally large home range size for a phrynosomatid, Munger (1984a) found that single-season home range size of <i>Phrynosoma cornutum</i> in southern Arizona averaged less than 2.5 ha. Dispersal distances are poorly known, and most studies have not been designed to detect long distance movements. The separation distance for suitable habitat is a compromise between the typical sedentary habits of these lizards, their physical ability to cover fairly large distances in a short period of time, their tendency to occur throughout patches of suitable habitat, and the likely low probability that two occupied locations separated by less than several kilometers of suitable habitat would represent independent populations.","versionDate":"2004-09-21","versionAuthor":"Hammerson, G.","versionNotes":null,"lastModified":"2020-04-30T02:06:33.240021Z"}],"plantCharacteristics":null,"elementManagement":{"elementGlobalId":103050,"eoManagementGroupName":null,"stewardshipOverview":null,"impacts":null,"restorationPotential":null,"siteConservationPlansConsidered":null,"managementMethods":null,"monitoringMethods":null,"managementProgramContacts":null,"monitoringProgramContacts":null,"managementResearchPrograms":null,"managementResearchNeeds":null,"biologicalResearchNeeds":null,"additionalTopics":null},"occurrenceViabilities":[{"eoRankSpecsDetailId":104541,"eoRankSpecsGroupName":null,"locationUseClass":{"id":1,"locationUseClassDescEn":"Not applicable","locationUseClassDescEs":"No se aplica","locationUseClassDescFr":"Sans objet","displayOrder":1},"excellentViability":null,"goodViability":null,"fairViability":null,"poorViability":null,"viabilityJustification":"Use the Generic Guidelines for the Application of Occurrence Ranks (2008).<br>The Key for Ranking Species Occurrences Using the Generic Approach provides a step-wise process for implementing this method.","versionDate":null,"versionAuthor":null,"versionNotes":null,"lastModified":"2020-05-14T02:23:05.553616Z"}],"references":[{"id":112940,"citation":"Aguilars-S., M. A., J. W. Sites, Jr., and R. W. Murphy. 1988. Genetic variability and population structure in the lizard genus <i>Petrosaurus </i>(Iguanidae). J. Herpetol. 22:135-145.","shortCitationAuthor":"Aguilars-S. et al.","shortCitationYear":1988,"referenceCode":"A88AGU01NAUS","lastModified":"2020-11-11T02:09:08.330353Z"},{"id":137372,"citation":"Behler, J. L., and F. W. King. 1979. The Audubon Society field guide to North American reptiles and amphibians. Alfred A. Knopf, New York. 719 pp.","shortCitationAuthor":"Behler and King","shortCitationYear":1979,"referenceCode":"B79BEH01NAUS","lastModified":"2020-02-25T14:38:24.173666Z"},{"id":137880,"citation":"Collins, J. T. 1990. Standard common and current scientific names for North American amphibians and reptiles. 3rd ed. Society for the Study of Amphibians and Reptiles. Herpetological Circular No. 19. 41 pp.","shortCitationAuthor":"Collins","shortCitationYear":1990,"referenceCode":"B90COL01NAUS","lastModified":"2020-02-25T14:38:15.579798Z"},{"id":621810,"citation":"Crother, B. I. (editor). 2008. Scientific and standard English names of amphibians and reptiles of North America north of Mexico, with comments regarding confidence in our understanding. Sixth edition. Society for the Study of Amphibians and Reptiles Herpetological Circular 37:1-84. Online with updates at: http://www.ssarherps.org/pages/comm_names/Index.php","shortCitationAuthor":"Crother","shortCitationYear":2008,"referenceCode":"B08CRO01NAUS","lastModified":"2020-02-25T14:38:20.142383Z"},{"id":722484,"citation":"Crother, B. I. (editor). 2012. Scientific and standard English names of amphibians and reptiles of North America north of Mexico, with comments regarding confidence in our understanding. 7th edition. SSAR Herpetological Circular 39:1-92.","shortCitationAuthor":"Crother","shortCitationYear":2012,"referenceCode":"B12CRO01NAUS","lastModified":"2020-02-25T18:11:51.08501Z"},{"id":943912,"citation":"Crother, B. I. (editor). 2017. Scientific and standard English names of amphibians and reptiles of North America north of Mexico, with comments regarding confidence in our understanding. 8th edition. SSAR Herpetological Circular 43:1-104. [Updates in SSAR North American Species Names Database at: https://ssarherps.org/cndb]","shortCitationAuthor":"Crother","shortCitationYear":2017,"referenceCode":"B17CRO01EHUS","lastModified":"2020-02-25T18:11:53.413199Z"},{"id":1066835,"citation":"Gottscho, A. D. 2015. Lineage diversification of lizards (Phrynosomatidae) in southwestern North America: integrating genomics and geology. 2015. Dissertation, San Diego State University. 254 pp.","shortCitationAuthor":"Gottscho","shortCitationYear":2015,"referenceCode":"N15GOT01NAUS","lastModified":"2020-11-11T02:03:39.310047Z"},{"id":463241,"citation":"Grismer, L. L. 1999. An evolutionary classification of reptiles on islands in the Gulf of California. Herpetologica 55:446-469.","shortCitationAuthor":"Grismer","shortCitationYear":1999,"referenceCode":"A99GRI02NAUS","lastModified":"2020-11-11T02:09:08.330353Z"},{"id":144678,"citation":"Jennings, M. R. 1990b. <i>Petrosaurus</i>. Cat. Am. Amph. Rep. 494.1-494.2.","shortCitationAuthor":"Jennings","shortCitationYear":1990,"referenceCode":"A90JEN02NAUS","lastModified":"2020-11-11T02:09:08.330353Z"},{"id":123202,"citation":"Jennings, M. R. 1990c. <i>Petrosaurus mearnsi</i>. Cat. Am. Amph. Rep. 495.1-495.3.","shortCitationAuthor":"Jennings","shortCitationYear":1990,"referenceCode":"A90JEN03NAUS","lastModified":"2020-11-11T02:09:08.330353Z"},{"id":1153425,"citation":"Nicholson, K. E. (ed.). 2025. Scientific and Standard English Names of Amphibians and Reptiles of North America North of Mexico, with Comments Regarding Confidence in Our Understanding. Ninth Edition. Society for the Study of Amphibians and Reptiles. 87 pp. Online database available at: https://cnah.org/SSARnames.aspx","shortCitationAuthor":"Nicholson","shortCitationYear":2025,"referenceCode":"B25NIC01NAUS","lastModified":"2026-06-06T01:36:32.018241Z"},{"id":144435,"citation":"Stebbins, R. C. 1985a. A field guide to western reptiles and amphibians. Second edition. Houghton Mifflin Company, Boston, Massachusetts. xiv + 336 pp.","shortCitationAuthor":"Stebbins","shortCitationYear":1985,"referenceCode":"B85STE01NAUS","lastModified":"2020-02-25T18:11:51.08501Z"},{"id":266629,"citation":"Stebbins, R. C. 2003. A field guide to western reptiles and amphibians. Third edition. Houghton Mifflin Company, Boston.","shortCitationAuthor":"Stebbins","shortCitationYear":2003,"referenceCode":"B03STE01NAUS","lastModified":"2020-02-25T18:11:51.08501Z"}],"otherCommonNames":[{"id":205761,"name":"Banded Rock Lizard","language":"EN"}],"speciesGlobal":{"elementGlobalId":103050,"cites":null,"cosewic":null,"fwsRegion":null,"genusSize":{"id":2,"genusSizeDescEn":"Very small genus","genusSizeDescEs":"Un género muy pequeño","genusSizeDescFr":"Très petit genre"},"jurisEndem":{"id":5,"jurisEndemDescEn":"occurs (regularly, as a native taxon) in multiple nations","jurisEndemDescEs":"Se encuentra en varias naciones (de manera regular, como un taxón nativo)","jurisEndemDescFr":"Se trouve dans plusieurs nations (de façon régulière, tel un taxon indigène)"},"nomenclaturallyEst":null,"usesa":null,"informalTaxonomy":{"informalTaxonomyId":7,"level1":"Animals","level2":"Vertebrates","level3":"Reptiles","level":3,"hasChildren":false,"parentId":2,"distributionStatus":"complete","displayOrder":1100},"parentSpecies":null,"infraspecies":false,"kingdom":"Animalia","phylum":"Craniata","taxclass":"Reptilia","taxorder":"Squamata","family":"Phrynosomatidae","genus":"Petrosaurus","americanFisheriesStatus":null,"americanFisheriesStatusDate":null,"saraStatus":null,"saraStatusDate":null,"cosewicDate":null,"interpretedCosewic":null,"cosewicComments":null,"usesaDate":null,"interpretedUsesa":null,"usesaComments":null,"completeDistribution":true,"synonyms":[],"infraspeciesList":[],"ebarId":null,"ebarCanadianScope":false,"ebarGlobalScope":false,"ebarKbaGroup":"Amphibians and Reptiles","caGeneralStatusId":null},"speciesCharacteristics":{"elementGlobalId":103050,"reproductionComments":"Lays a clutch of 2-6 eggs June-August (Stebbins 1985).","ecologyComments":null,"habitatComments":"This lizard is most abundant among massive rocks (high rocky cliffs) in the shady, narrower parts of canyons, on the desert slope of mountains (Grismer 2002, Stebbins 2003). In Baja California, some populations extend into chaparral and pinyon-juniper woodlands on the west face of the Sierra San Pedro Martir (Grismer 2002).","generalDescription":null,"diagnosticCharacteristics":null,"speciesMarineHabitats":[],"speciesTerrestrialHabitats":[{"cagTerrHabId":-112017,"terrestrialHabitat":{"id":5,"terrestrialHabitatDescEn":"Woodland - Conifer","terrestrialHabitatDescEs":"Lote de madera - Conífera","terrestrialHabitatDescFr":"Terrain boisé — Résineux","displayOrder":7}},{"cagTerrHabId":-112016,"terrestrialHabitat":{"id":7,"terrestrialHabitatDescEn":"Shrubland/chaparral","terrestrialHabitatDescEs":"Matorral/Chaparral","terrestrialHabitatDescFr":"Fruticée/Chaparral","displayOrder":9}},{"cagTerrHabId":-108814,"terrestrialHabitat":{"id":11,"terrestrialHabitatDescEn":"Desert","terrestrialHabitatDescEs":"Desierto","terrestrialHabitatDescFr":"Désert","displayOrder":13}},{"cagTerrHabId":-108815,"terrestrialHabitat":{"id":17,"terrestrialHabitatDescEn":"Bare rock/talus/scree","terrestrialHabitatDescEs":"Roca viva/pendiente de roca/piedras sueltas","terrestrialHabitatDescFr":"Éboulis","displayOrder":20}},{"cagTerrHabId":-108816,"terrestrialHabitat":{"id":18,"terrestrialHabitatDescEn":"Cliff","terrestrialHabitatDescEs":"Acantilado","terrestrialHabitatDescFr":"Falaise","displayOrder":21}}],"speciesRiverineHabitats":[],"speciesPalustrineHabitats":[],"speciesLacustrineHabitats":[],"speciesSubterraneanHabitats":[],"speciesEstuarineHabitats":[]},"primaryReference":{"id":1153425,"citation":"Nicholson, K. E. (ed.). 2025. Scientific and Standard English Names of Amphibians and Reptiles of North America North of Mexico, with Comments Regarding Confidence in Our Understanding. Ninth Edition. Society for the Study of Amphibians and Reptiles. 87 pp. Online database available at: https://cnah.org/SSARnames.aspx","shortCitationAuthor":"Nicholson","shortCitationYear":2025,"referenceCode":"B25NIC01NAUS","lastModified":"2026-06-06T01:36:32.018241Z"},"predecessors":[],"elementGlobalThreatAssessments":[]}