IRCF

		PALEARIS
		NEWS & EVENTS
		ABOUT PALEARIS
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The Semiarid Region of the Motagua Valley in northeastern Guatemala, comprised of thorn scrub and subtropical dry forest has been classified as an ecoregion based on its importance and uniqueness.

ABOUT CTENOSAURA PALEARIS

GENERAL

SPECIES DESCRIPTION

HABITAT & NATURAL HISTORY

MEMBER LOGIN CONTACT US PRIVACY

A PARTIAL LIST OF SPECIES AND SUBSPECIES WHICH HAVE BEEN DRIVEN TO EXTINCTION SINCE 1642

Cyclura cornuta onchiopsis • Peromyscus gossypinus restrictus • Canis rufus rufus • Canis rufus floridanus •Vulpes macrotis macrotis • Eschrichtius gibbosus gibbosus • Heteropsomys antillensis • Heteropsomys insulans • Elasmodontomys obliquus • Isolobodon portoricensis • Canis lupus alces • Microtus nesophilus • Peromyscus nesodytes • Peromyscus polionotus decoloratus • Geomys pinetis goffi • Thomomys mazama tacomensis • Eutamias minimus atristriatus • Acratocnus odontrigonus • Phyllonycteris major • Monophyllus plethodon frater • Nesophontes edithae • Microtus ochrogaster ludovicianus • Cervus canadensis merriami • Geomys fontanelus • Canis lupus beothucus • Monachus tropicalis • Cervus elaphus merriami • Sigmodon fulviventer goldmani • Rangifer tarandus dawsoni • Cervus canadensis canadensis • Hydrodamalis stelleri • Felis concolor schorgeri • Canis lupus mogollonensis • Canis lupus bernardi • Ovis canadensis auduboni • Canis lupus irremotus • Mustela macrodon • Canis lupus monstrabilis • Ursus arctos californicus • Canis lupus youngi • Canis lupus nubilus • Canis lupus fuscus • Moho nobilis • Moho braccatus • Moho bishopi • Moho apicalis • Chaetoptila angustipluma • Pinguinus impennis • Ectopistes migratorius • Drepanis funerea • Ciridops anna • Porzana sandwichensis • Chloridops kona • Conuropsis carolinensis • Camptorhynchus labradorius • Porzana palmeri • Tympanuchus phasianellus • Campephilus principalis • Vermivora bachmanii • Hemignathus ellisianus • Hemignathus obscurus • Hemignathus sagittirostris • Rhodacanthis flaviceps • Rhodacanthis palmeri • Paroreomyza flammea • Mayadestes woahensis • Tympanuchus cupido cupido • Phaeornis obscurus lanaiensis • Anas oustaleti • Loxops coccinea rufa • Acrocephalus familiaris familiaris • Melospiza melodia graminea • Passerherbulus henslowii • Houstonensis • Himatione sanguinea freethi • Aphanolimnas monasa • Hemignathus obscurus ellisianus • Phaeornis obscurus oahensis • Hemignathus lucidus lucidus • Hemignathus obscurus lanaiensis • Paroreomyza maculata montana • Psittirostra kona • Aplonis corvina • Ammodranus maritimus mirabilis • Melospiza melidia amaka • Drepanis pacifica • Myiagra freycineti • Otus nudipes newtoni • Aratinga chloroptera maugei • Pennula sandwichensis • Dysmorodrepanis munroi • Amazona vituta gracelipes • Conuropsis carolinensis carolinensis • Conuropsis carolinensis ludoviciana • Hemignathus obscurus obscurus • Pennula millsi • Thryomane bewickii leucophrys • Rallus wakensis • Plethodon ainsworthi • Rana fisheri • Eleutherodactylus jasperi • Eleutherodactylus karlschmidti • Leiocephalus eremitus • Alsophis sancticrucis • Notropis orca • Coregonus johannae • Gambusia georgei • Gambusia amistadensis • Lampetra minima • Empetrichthys merriami • Fundulus albolineatus • Pogonichthys ciscoides • Lepidomeda altivelis • Gila crassicauda • Cottus echinatus • Moxostoma lacerum • Chasmistes muriei • Noturus trautmani • Rhinichthys deaconi • Stizostedion vitreum glaucum • Coregonus nigripinnis • Salmo clarki macdonaldi • Notropis simus simus • Chasmistes liorus liorus • Cyprinodon nevadensis calidae • Cyprinodon nevadensis shoshone • Empetrichthys latos pahrump • Coregonus alpenae • Cyprinodon macularius ssp. • Coregonus kiyi orientalis • Oncorhynchus clarki ssp. • Cyprinella lutrensis blairi • Salvelinus agassizi • Rhinichthys cataractae smithi • Rhinichthys osculus relinquus • Notropis simus simus • Gila bicolor isolata • Empetrichthys latos concavus • Somatogyrus wheeleri • Scotorythra paratactis • Serratella spiculosa • Serratella frisoni • Stonemyia velutina • Swammerdamia castaneae • Somatogyrus pilsbryi • Paracapnia disala • Somatogyrus crassilabris • Papaipema aweme • Somatogyrus amnicoloides • Tischeria perplexa • Scotorythra nesiotes • Ruspolia remotus • Paracapnia ensicala • Parapsyche extensa • Philanthus nasalis • Philocasca oron • Pyrgulopsis ruinosa • Photuris bethaniensis • Leptoxis formani • Pseudonophthalmus krekeleri • Rhaphiomidas trochilus • Rhyacophila amabilis • Scotorythra megalophylla • Neoplanorbis carinatus • Medionidsu mcglameriae • Leptoxis occultata • Leptoxis picta • Nesoprosopis chlorosticata • Papaipema aerata • Leptoxis torrefacta • Leptoxis vittata • Physella microstriata • Marstonia olivacea • Achatinella buddii • Neoplanorbis smithi • Neoplanorbis tantillus • Neoplanorbis umbilicatus • Newcombia philippiana • Oreohelix parawanensis • Epioblasma propinqua • Epioblasma (=Dysnomia) sampsoni • Epioblasma stewardsonii • Lyropupa perlonga • Amastra elongata • Notropis simus simus • Gila bicolor isolata • Empetrichthys latos concavus • Somatogyrus wheeleri • Scotorythra paratactis • Serratella spiculosa • Serratella frisoni • Stonemyia velutina • Swammerdamia castaneae • Somatogyrus pilsbryi • Paracapnia disala • Somatogyrus crassilabris • Papaipema aweme • Somatogyrus amnicoloides • Tischeria perplexa • Scotorythra nesiotes • Ruspolia remotus • Paracapnia ensicala • Parapsyche extensa • Philanthus nasalis • Philocasca oron • Pyrgulopsis ruinosa • Photuris bethaniensis • Leptoxis formani • Pseudonophthalmus krekeleri • Rhaphiomidas trochilus • Rhyacophila amabilis • Scotorythra megalophylla • Neoplanorbis carinatus • Medionidsu mcglameriae • Leptoxis occultata • Leptoxis picta • Nesoprosopis chlorosticata • Papaipema aerata • Leptoxis torrefacta • Leptoxis vittata • Physella microstriata • Marstonia olivacea • Achatinella buddii • Neoplanorbis smithi • Neoplanorbis tantillus • Neoplanorbis umbilicatus • Newcombia philippiana • Oreohelix parawanensis • Epioblasma propinqua • Epioblasma (=Dysnomia) sampsoni • Epioblasma stewardsonii • Lyropupa perlonga • Amastra elongata • Leptoxis showalterii • Oreohelix florida • Gyrotoma walkeri • Gyrotoma pyramidata • Gyrotoma pumila • Gyrotoma pagoda • Gyrotoma lewisii • Gyrotoma excisa • Pleurobema bournianum • Amastra forbesi • Quadrula tuberosa • Achatinella thaanumi • Achatinella spaldingi • Achatinella papyracea • Achatinella lehuiensis • Achatinella decora • Achatinella casta • Achatinella caesia • Pyrgulopsis carinata • Amastra umbilicata • Limnebius aridus • Nesoprosopis angustula • Hydroptila wakulla • Hygrotus artus • Hypena laysanensis • Hypena plagiota • Isonychia diversa • Isoperla conspicua • Isoperla emarginata • Isoperla irregluaris • Isoperla jewetti • Isoperla maxana • Hydroporus spangleri • Leuctra laura • Hydroporus elusivus • Limnebius texanus • Megalagrion jugorum • Megalagrion molokaiense • Mesocapnia bakeri • Limnebius utahensis • Mesocapnia ogotoruka • Myrmosula pacifica • Neduba extincta • Nepytia pellucidaria • Nesopeplus serratus • Nesoprosopis coniceps • Lambdina canitiaria • Hedylepta epicentra • Drosophila lanaiensis • Ectodemia castaneae • Ectodemia phleophaga • Ephemera triplex • Ethmia monachella • Euchalcia borealis • Eximacris phenax • Eximacris superbum • Farula davisi • Flexamia rebranura • Haliplus nitens • Hydroporus utahensis • Hedylepta asaphombra • Nesoprosopis anthricina • Hedylepta euryprova • Hedylepta fullawayi • Hedylepta giffardi • Hedylepta iridias • Hedylepta laysanensis • Hedylepta meyricki • Hedylepta monogona • Hedylepta musicola • Hedylepta telegrapha • Heliothis minuta • Horologion speokites • Hedylepta anastrepta • Nesoprosopis rugulosa • Nesoprosopis andrenoides • Nesoprosopis mauiensis • Nesoprosopis melanothrix • Nesoprosopis mutata • Nesoprosopis neglecta • Nesoprosopis nivalis • Nesoprosopis obscurata • Nesoprosopis ombrias • Nesoprosopis pele • Nesoprosopis perspicua • Nesoprosopis psammobia • Nesoprosopis laticeps • Nesoprosopis rubrocaudatus • Nesoprosopis laeta • Nesoprosopis satellus • Nesoprosopis setosifrons • Nesoprosopis simplex • Nesoprosopis specularis • Nesoprosopis sphecodoides • Nesoprosopis unica • Nesoprosopis vicina • Nesotocus kauaiensis • Ochthebius putnamensis • Oecetis floridana • Oecetis parva • Nesoprosopis pubescens • Nesoprosopis finitima • Nesoprosopis assimulans • Nesoprosopis blackburni • Nesoprosopis caeruleipennis • Agrotis microeas • Nesoprosopis comes • Leptoxis lirata • Nesoprosopis connectens • Nesoprosopis crabronoides • Nesoprosopis difficilis • Nesoprosopis dimidiata • Nesoprosopis erythrodemas • Nesoprosopis longiceps • Nesoprosopis filicum • Paleoxenus dohrni • Nesoprosopis flavipes • Nesoprosopis haleakalae • Nesoprosopis hilaris • Nesoprosopis hirsutula • Nesoprosopis homeochroma • Nesoprosopis hostilis • Nesoprosopis hula • Nesoprosopis insignis • Nesoprosopis kauaiensis • Nesoprosopis koae • Nesoprosopis kona • Nesoprosopis facilis • Carelia olivacea • Achatinella abbreviata • Auriculella expansa • Auricelella uniplicata • Carelia bicolor • Carelia cochlea • Carelia dolei • Carelia evelynae • Carelia kalalauensis • Carelia lirata • Amastra tenuispira • Carelia necra • Amastra subsoror • Carelia paradoxa • Carelia pilsbryi • Carelia tenebrosa • Carelia turricula • Carelia waipouhiensis • Clappia cahabensis • Clappia unbilicata • Elimia brevis • Elimia clausa • Carelia mirabilis • Achatinella valida • Achatinella cestus • Achatinella dimorpha • Achatinella elegans • Leptoxis ligata • Achatinella juncea • Agrotis laysanensis • Achatinella phaeozona • Achatinella rosea • Achatinella swiftii • Amphigyra alabamensis • Achatinella turgida • Elimia hartmaniana • Achatinella vittata • Achatinella vulpina • Amastra albolabris • Amastra cornea • Amastra crassilabrum • Amastra pellucida • Amastra porcus • Amastra reticulata • Amastra subrostrata • Achatinella taeniolata • Somatogyrus pygnaeus • Somatogyrus constrictus • Somatogyrus coosaensis • Somatogyrus crassus • Somatogyrus currierianus • Somatogyrus decipiens • Somatogyrus excavatus • Somatogyrus georgianus • Somatogyrus hendersoni • Somatogyrus humerosus • Elimia fusiformis • Somatogyrus obtusus • Elimia pilsbryi • Somatogyrus quadratus • Somatogyrus sargenti • Somatogyrus strengi • Somatogyrus substriatus • Somatogyrus tennesseensis • Stagnicola utahensis • Sphalloplana holsingeri • Sphalloplana subtilis • Thermosphaeroma thermophilum • Somatogyrus nanus • Perdicella fulgurans • Achatinella juddii • Elimia impressa • Elimia cylindracea • Elimia pupaeformis • Elimia pupoidea • Elimia pygmaea • Elimia vanuxemiana • Erinna aulacospira • Leptoxis clipeata • Somatogyrus biangulatus • Paravitrea aulacogyra • Pyrgulopsis nevadensis • Perdicella mauiensis • Perdicella zebra • Perdicella zebrina • Planorbella multivolvis • Elimia jonesi • Elimia lachryma • Elimia laeta • Elimia macglameriana • Elimia olivula • Elimia gibbera • Leptoxis compacta • Anisota manitobensis • Calephelis dreisbachi • Procambarus connus • Stygobromus lucifugus • Acroneuria flinti • Agrotis cremata • Agrotis crinigera • Agrotis fasciata • Agrotis kerri • Agrotis melanoneura • Hemigrapsus oregonensis • Agrotis procellaris • Dexteria floridan • Anomala tibialis • Apamea smythi • Achatinella lorata • Argyresthia castaneella • Truncilla cognata • Autoplusia olivacea • Belocephalus micanopy • Belocephalus sleighti • Brachycercus flavus • Agrotis potophila • Alasmidonta robusta • Leptoxis formosa • Leptoxis crassa • Epioblasma personata • Epioblasma lewisii • Epioblasma lanior • Epioblasma haysiana • Epioblasma flexuosa • Epioblasma cincinnatiensis • Epioblasma biemarginata • Procambarus angustatus • Alasmidonta wrightiana • Asaphomyia texanus • Alasmidonta mccordi • Pentagenia robusta • Glaucopsyche xerces • Ephemera compar • Alloperla roberti • Pacifastacus nigrescens • Branchinella lithaca • Thermacarus nevadensis • Branchinella alachua • Epioblasma arcaeformis • Pleurobema avellanum • Trigonoscuta yorbalindae • Tritocleis microphylla • Usingerina moapensis • Calephelis freemani • Elliptio nigella • Appalachia hebardi • Epioblasma othcaloogensis • Epioblasma turgidula • Lampsilis binominata • Trigonoscuta rossi • Pleurobema altum • Anondonta dejecta • Pleurobema hanleyianum • Pleurobema johannis • Pleurobema marshalli • Pleurobema murrayense • Pleurobema nucleopsis • Pleurobema rubellum • Pleurobema verum • Quadrula couchiana • Quadrula stapes • Toxolasma corvunculus • Lampsilis haddletoni • Ceraclea floridana • Epioblasma metastriata • Triaenodes tridonta • Campsicnemus mirabilis • Chersodromia hawaiiensis • Cheumatopsyche vannotei • Cyrtopeltis phyllostegiae • Desmopachria cenchramis • Epioblasma lanior • Epioblasma haysiana • Epioblasma flexuosa • Epioblasma cincinnatiensis • Epioblasma biemarginata • Procambarus angustatus • Alasmidonta wrightiana • Asaphomyia texanus • Alasmidonta mccordi • Pentagenia robusta • Glaucopsyche xerces • Ephemera compar • Alloperla roberti • Pacifastacus nigrescens • Branchinella lithaca • Thermacarus nevadensis • Branchinella alachua • Epioblasma arcaeformis • Pleurobema avellanum • Trigonoscuta yorbalindae • Tritocleis microphylla • Usingerina moapensis • Calephelis freemani • Elliptio nigella • Appalachia hebardi • Epioblasma othcaloogensis • Epioblasma turgidula • Lampsilis binominata • Trigonoscuta rossi • Pleurobema altum • Anondonta dejecta • Pleurobema hanleyianum • Pleurobema johannis • Pleurobema marshalli • Pleurobema murrayense • Pleurobema nucleopsis • Pleurobema rubellum • Pleurobema verum • Quadrula couchiana • Quadrula stapes • Toxolasma corvunculus • Lampsilis haddletoni • Ceraclea floridana • Epioblasma metastriata • Triaenodes tridonta • Campsicnemus mirabilis • Chersodromia hawaiiensis • Cheumatopsyche vannotei • Cyrtopeltis phyllostegiae • Desmopachria cenchramis • Triaenodes phalacris • Cophura hurdi • Tetramolopium conyzoides • Isocoma humilis • Lipochaeta bryanii • Lipochaeta degeneri • Plagiobothrys glaber • Tetramolopium tenerrimum • Solidago porteri • Helianthus praetermissus • Cryptantha insolita • Diellia mannii • Cryptantha aperta • Lipochaeta perdita • Sesuvium trianthemoides • Achyranthes atollensis • Sanicula kauaiensis • Ochrosia kilaueaensis • Asplenium leucostegioides • Argyroxiphium virescens • Brickellia chenopodina • Erigeron mariposanus • Calochortus monanthus • Plagiobothrys hystriculus • Mimulus whiiipplei • Mimulus traskiae • Matelea radiata • Dissanthelium californicum • Melicope obovata • Melicope nealiae • Melicope macropus • Hedyotis foliosa • Rubus aliceae • Lysimachia kahiliensis • Lysimachia haupuensis • Lysimachia forbesii • Rumex tomentellus • Eriogonum truncatum • Polygala piliophora • Phlox peckii • Phyllostegia waimeae • Eragrostis mauiensis • Agalinis caddoensis • Perperomia degeneri • Triphora latifolia • Botrychium subbifoliatum • Sphaeralcea procera • Sida inflexa • Kokia lanceolata • Hibiscadelphus wilderianus • Hibiscadelphus crucibracteatus • Hibiscadelphus bombycinus • Stenogyne viridis • Stenogyne kanehoana • Stenogyne haliakalae • Stenogyne oxygona • Muhlenbergia californica • Fissidens clebschii • Franklinia alatamaha • Kikia cookei • Hibiscadelphus hualalaiensis • Hibiscadelphus giffardianus • Pritchardia affinis • Lycium verrucosum • Mimulus brandegeei • Potentilla multijuga • Calochortus indecorus • Monardella pringlei • Orbexilum stipulatum • Carex aboriginum • Plagiobothrys lamprocarpus • Melicope wailauensis • Wikstroemia hanalei • Phyllostegia variabilis • Agalinis calycina • Agalinis nuttallii • Micranthemum micranthemoides • Penstemon campanulatus • Cirsium praeteriens • Penstemon parviflorus • Pyrenula micheneri • Wikstroemia villosa • Brachymenium andersonii • Cephaloziella obtusilobula • Cylindrocolea andersonii • Erioderma pedicellatum • Astilbe crenatiloba • Penstemon leptanthus • Cyanea giffardii • Delissa sinuata • Delissa parviflora • Delissa lauliiana • Delissa laciniata • Delissa fallax • Cyanea truncata • Cyanea quercifolia • Cyanea pycnocarpa • Cyanea profuga • Cyanea pohaku • Cyanea parvifolia • Cyanea mauiensis • Stenogyne cinerea • Cyanea linearifolia • Schiedea amplexicaulis • Cyanea eleeleensis • Cyanea dolichopoda • Cyanea cylindrocalyx • Cyanea comata • Cyanea arborea • Clermontia multiflora • Callitriche fassettii • Thismia americana • Tropidocarpum capparideum • Thelypodium tenue • Streptanthus lemmonii • Rorippa coloradensis • Arabis fructicosa • Cyanea longissima • Cyrtrandra olona • Phyllostegia rockii • Phyllostegia imminuta • Phyllostegia hillebrandii • Phyllostegia helleri • Monardella leucocephala • Hedeoma pilosa • Haplostachys truncata • Haplostachys munroi • Haplostachys linearifolia • Haplostachys bryanii • Sisyrinchium farwellii • Elodea schweinitzii • Scaevola hobdyi • Lobelia remyi • Deparia kaalaana • Plagiobothrys lithocaryus • Schiedea implexa • Silene cryptopetala • Silene degeneri • Sicyos hillebrandii • Cyrtandra waiolani• •Cyperus rockii • Cyrtandra pruinosa • Dalea sabinalis • Orbexilum macrophyllum • Cyrtandra crenata • Cyrtandra gracilis • Cyrtandra kohalae • Symphoricarpos guadalupensis • Cyperus kunthianus