extinct

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Definition/MeaningWord/Phrase
extinct small mostly diurnal lower primates that fed on leaves and fruit; abundant in North America and Europe 30 to 50 million years ago; their descendents probably include the lemurs; some authorities consider them ancestral to anthropoids but others co Adapid , Adapid group
extinct primate of about 38 million years ago; fossils found in Egypt Aegyptopithecus
huge extinct flightless birds: elephant birds Aepyorniformes , order Aepyorniformes
huge (to 9 ft.) extinct flightless bird of Madagascar aepyornis , elephant bird
superclass of eel-shaped chordates lacking jaws and pelvic fins: lampreys; hagfishes; some extinct forms Agnatha , superclass Agnatha
eel-shaped vertebrate without jaws or paired appendages including the cyclostomes and some extinct forms agnathan , jawless fish , jawless vertebrate
tiny (150 to 300 grams) extinct primate of 46 to 50 million years ago; fossils found in Algeria; considered by some authorities the leading candidate for the first anthropoid Algeripithecus minutus
extinct genus of Hominoidea Algeripithecus , genus Algeripithecus
fossil shell of extinct mollusk ammonite
one of the coiled chambered fossil shells of extinct mollusks ammonite , ammonoid
primitive reptile having no opening in the temporal region of the skull; all extinct except turtles anapsid , anapsid reptile
oldest known reptiles: turtles; extinct Permian forms Anapsida , subclass Anapsida
extinct small freshwater jawless fish usually having a heterocercal tail and an armored head; of the Silurian and Devonian anaspid
extinct order of jawless vertebrates Anaspida , order Anaspida
extinct branch of the Indo-European family of languages known from inscriptions and important in the reconstruction of Proto-Indo European Anatolian , Anatolian language
taxonomic kingdom comprising all living or extinct animals Animalia , animal kingdom , kingdom Animalia
small Australian marsupial having long snout and strong claws for feeding on termites; nearly extinct anteater , banded anteater , Myrmecobius fasciatus , numbat
extinct primitive toothed bird of the Jurassic period having a long feathered tail and hollow bones; usually considered the most primitive of all birds archaeopteryx , Archaeopteryx lithographica , archeopteryx
extinct primitive toothed bird with a long feathered tail and three free clawed digits on each wing archaeornis
extinct reptiles including: dinosaurs; plesiosaurs; pterosaurs; ichthyosaurs; thecodonts archosaur , archosaurian , archosaurian reptile
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