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Livro de Resumos - Dinossauros do Maranhão

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Paleontologia 267<br />

subaequilateralis). Na Bacia Potiguar, ocorrem Osteichthyes nas formações Açu (Chanidae:<br />

Tharrhias castellanoi) e Jandaíra (†Pycno<strong>do</strong>ntidae: Potiguara rosa<strong>do</strong>i; e †Semionotidae:<br />

Lepi<strong>do</strong>tes dixseptiensis). Na Bacia <strong>de</strong> São Luís, a Formação Alcântara é a unida<strong>de</strong> <strong>de</strong><br />

<strong>de</strong>staque, compreen<strong>de</strong>n<strong>do</strong> os Chondrichthyes †Hybo<strong>do</strong>ntidae (Tribodus),<br />

†Sclerorhynchidae (Onchopristis numidus e Atlanticopristis equatorialis) e Myliobatidae<br />

(Myliobatis); e os Osteichthyes †Semionotidae (Lepi<strong>do</strong>tes), formas in<strong>de</strong>terminadas <strong>de</strong><br />

†Semionotiformes, Lepisosteidae, Amiiformes e †Pycno<strong>do</strong>ntidae, além <strong>de</strong> †Mawsoniidae<br />

(Mawsonia gigas) e Dipnoiformes (Ceratodus africanus, Asiatoceratodus tiguidiensis e<br />

Protopterus humei). Na Bacia <strong>de</strong> Pirabas, <strong>de</strong>staca-se a paleoictiofauna da Formação<br />

Pirabas, abrangen<strong>do</strong> principalmente os Chondrichthyes: Ginglymostomatidae<br />

(Ginglymostoma serra, Nebrius ferrugineus), Lamnidae (Procarcharo<strong>do</strong>n megalo<strong>do</strong>n,<br />

Carcharo<strong>do</strong>n carcharias, Isurus oxyrinchus), Hemigaleidae (Hemipristis elongatus),<br />

Carcharhinidae (Carcharhinus sorrah, C. perezii, C. priscus, Carcharhinus sp., Galeocer<strong>do</strong><br />

cuvier, Rhizopriono<strong>do</strong>n lalan<strong>de</strong>i), Sphyrnidae (Sphyrna sp.) e Myliobatidae incertae sedis.<br />

Os Osteichthyes incluem Ariidae (Arius sp.), Sphyraenidae (Sphyraena cunhai e S. egleri),<br />

Sparidae (?Sphaerodus paraensis) e Dio<strong>do</strong>ntidae (Dio<strong>do</strong>n ferreirai).<br />

Palestras Magistrais

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