Cika jumla mai zuwa:
faduwar jam'iyyar kwaminisanci daga mulki a 1989 Brontosaurus ya zama kungiya mai zaman kanta kuma ya sake fasalin ciki. Kungiyar ta yanke shawarar mai da hankali kan ayyukan lokacin hutu da ilimi da kuma guje wa shiga siyasa da ke da shahara a tsakanin sauran kungiyoyin kare muhalli a Jamhuriyar Czech. A cikin 1992 gungun mambobi sun bar kuma sun kafa "Asociace Brontosaura" mai zaman kanta ("Association Brontosaurus"). A cikin 1996 rikici tsakanin ƙungiyoyi biyu a cikin Brontosaurus kusan ya rushe shi; gano ɓarna ya ƙara tsananta yanayin. Rikicin ya sami mafi yawan warwarewa a lokacin kaka 1999 - 2000 amma kungiyar ta lalace ta hanyar kudi (an gano wani ɓarna da tsohon shugaban ya yi). Gwamnati ta ba da sama da kashi 80% na kasafin kuɗinta a shekara ta 2001.