extinct genus bulldog ants subfamily contains described species genus described stage early deposits british_columbia canada specimens collected queens exception single worker ants large eyes large developed sting present species behaviour ants similar extant ants foraging prey leaving trails food sources assigned tribe instead generally regarded identity challenged undoubtedly insect history classification extinct genus ants described species fossils extinct ants studied described cambridge massachusetts published description genus species annals journal article genus combination latin meaning ancient greek meaning included genus description paper contained description type species fossil species date colleagues originally classified latin uncertain placement subfamily specimens unable properly identified switzerland noted specimen genus allows proper examination key traits characters morphological characters wings specimens undoubtedly insect report russian describing new accepted classification colleagues mentioning comments following generated colleagues possible phylogenetic positions ants subfamily right included additional extinct genera compared left suggested closely related extinct ants extant description characters separate genera notable feature distinctly slender nature queens workers morphology shown clearly shape connecting abdomen similar modern genus genera distinguishable structure lacking seen eyes large developed poorly preserved sting present examined fossils unknown ants sting poor preservation sting preserved described single compression fossil found near british_columbia incomplete specimen queen numbered currently preserved collections housed british_columbia cover coined specific epithet latin meaning prolonged reference elongated morphology type specimen species species notably larger size preserved portion millimetres inches large specimen measuring millimetres inches poorly preserved studied preserved partly missing head second species described unlike known specimens included collections respectively specimen partial queen incomplete head fairly preserved isolated body portions indistinct complete queen missing parts legs hind wings overall species estimated millimetres inches long length millimetres inches distinguishable species smaller size half length head teeth additionally shape head capsule specimen large compound eyes specific epithet greek meaning jaw reference small size compared species described species found known worker specimens currently deposited collections additional worker tentatively assigned species deposited collections based complete workers mature specimens estimated millimetres inches size adult workers attributed overall head capsule structure distinguish eyes large length head legs preserved long flat narrow shape head basis cover choosing specific epithet greek word meaning tapering point ecology colleagues suggested life habits species similar extant ants ants soil trees possibly nesting genus case species known inhabit trees exclusively workers likely preyed killing sting fed workers found foraging trees low vegetation leaving trails food sources recruit solitary ants likely large eyes locate prey navigational purposes
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