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A fossil skull recovered from southern Brazil preserved the animal\u2019s jaws, revealing a cutting beak paired with tightly packed grinding teeth.<\/p>\n
By examining those features, Jeung Hee Schiefelbein at Universidade Federal de Santa Maria (UFSM<\/a>) showed the specimen belonged to a previously unknown species.<\/p>\n Distinct tooth rows and jaw proportions separated it from other known relatives, even those found in the same rock layers.<\/p>\n That clear anatomical break raises new questions about how many different plant-eating reptiles shared the same environment and how they divided resources.<\/p>\n A beak with teeth<\/p>\n Named Isodapedon varzealis, the reptile probably reached about five feet (1.5 meters) long and moved low on four sturdy limbs.<\/p>\n A toothless front beak sliced plants first, while rows of fused teeth crushed food farther back in the mouth.<\/p>\n Fine grooves on the front bones likely held keratin, the tough material that strengthens bird beaks today.<\/p>\n That mix of cutting and grinding points to an animal built for tough vegetation, not fast-moving prey.<\/p>\n Plant-eating machinery<\/p>\n On the upper jaw, the maxilla, a tooth<\/a>-bearing skull bone, carried two matching grinding surfaces instead of one.<\/p>\n Each side held three lengthwise tooth rows, giving both halves a balanced arrangement rarely seen in close relatives.<\/p>\n Most related animals show one wider side, so this equal layout marked more than common individual variation.<\/p>\n Feeding differences may have let several herbivores share the same landscape without using plants the same way in daily feeding.<\/p>\n A rare jaw pattern<\/p>\n Below that upper jaw<\/a>, the dentary \u2013 the main lower jaw bone \u2013 carried its own unusual shelf. This feature offered a clue to its bite.<\/p>\n Small teeth stood close together on that shelf, helping the lower blade meet the upper groove as the animal chewed.<\/p>\n Other Brazilian species had wider shelves, missing teeth, or extra grooves, leaving a different bite pattern through the mouth.<\/p>\n Those contrasts gave the fossil a clear identity, even though scientists had only part of the skull from incomplete bones.<\/p>\n Careful fossil preparation<\/p>\n Fragile fossils rarely reveal their details quickly, and this skull demanded months of patient preparation before scientists could read it clearly.<\/p>\n Technicians removed sediment slowly because one rushed move could break tooth-bearing areas needed for species identification without destroying evidence.<\/p>\n \u201cThe tooth region, which is very important for rhynchosaurs, contains the characteristics necessary for identification at the species level,\u201d said Schiefelbein.<\/p>\n That slow work turned buried bone into readable evidence, especially where bite mechanics carried the species signal rather than just its outline.<\/p>\n Fossils guide rock dating<\/p>\n Beyond naming one animal<\/a>, the find helps paleontologists line up rock layers across southern Brazil where direct rock dates are scarce.<\/p>\n That work is biostratigraphy, matching rocks by fossils, and rhynchosaurs make especially useful markers across scattered outcrops.<\/p>\n When the same jaw patterns appear at separate sites, researchers can compare beds that lack datable volcanic ash across the basin.<\/p>\n For Isodapedon, that work remains cautious because several matching fragments from Brazil\u2019s collections still need fuller study before names settle.<\/p>\n Brazil and Scotland<\/p>\n Family-tree tests placed the new reptile near Scottish forms rather than beside known South American species in the team\u2019s tests.<\/p>\n Shared jaw traits tied Brazil, Argentina, Scotland, and possibly Zimbabwe into a wider Late Triassic herbivore story on ancient land.<\/p>\n Continents then formed Pangaea, one supercontinent, so related animals could spread across connected land more easily over many generations.<\/p>\n That connection makes the Brazilian fossil part of a pattern larger than one local discovery in one quarry.<\/p>\n Life before dinosaurs<\/p>\n During that tense ecological moment, early dinosaurs existed in Brazil but had not yet taken over ecosystems.<\/p>\n Large herbivores still included rhynchosaurs and mammal cousins, while small early dinosaur relatives moved through the same food webs alongside them.<\/p>\n Climate stress during the Carnian Pluvial Episode<\/a>, a wetter interval in the Late Triassic, reshaped many ecosystems across land and sea.<\/p>\n Against that changing backdrop, different plant eaters may have survived by dividing food resources more finely than their rivals did.<\/p>\n Rarity keeps questions<\/p>\n Even after formal naming, the fossil record still leaves gaps around this animal\u2019s range through time.<\/p>\n A few isolated jaws from other Brazilian sites look similar, but fossil fragments can mislead careful researchers.<\/p>\n Age, wear, and growth can alter tooth rows, making young animals resemble separate species in collections without warning.<\/p>\n More complete skulls will test whether those fragments belong to Isodapedon or another hidden branch within the group.<\/p>\n What the fossil reveals<\/p>\n A beaked skull, balanced tooth rows, and careful preparation turn one fragile fossil into a sharper picture of Triassic life in detail.<\/p>\n Future finds can show how many herbivore strategies filled southern Brazil before dinosaurs became the dominant plant eaters over millions of years.<\/p>\n The study is published in Royal Society Open Science<\/a>.<\/p>\n \u2014\u2013<\/p>\n Like what you read?\u00a0Subscribe to our newsletter<\/a>\u00a0for engaging articles, exclusive content, and the latest updates.<\/p>\n Check us out on\u00a0EarthSnap<\/a>, a free app brought to you by\u00a0Eric Ralls<\/a>\u00a0and Earth.com.<\/p>\n \u2014\u2013<\/p>\n","protected":false},"excerpt":{"rendered":"Scientists have identified a 230 million-year-old reptile with a sharp, parrot-like beak that sliced and processed plants with…\n","protected":false},"author":2,"featured_media":405878,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[85,46,141],"class_list":{"0":"post-405877","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-science","8":"tag-il","9":"tag-israel","10":"tag-science"},"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/posts\/405877","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/comments?post=405877"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/posts\/405877\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/media\/405878"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/media?parent=405877"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/categories?post=405877"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/tags?post=405877"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}