--- title: How Human Is New Species Homo Naledi description: The newfound species, uncovered in a South African cave system, appears to be an odd combination of primitive and modern features canonical: https://time.com/4029312/how-human-is-homo-naledi/ author: Justin Worland article:opinion: false article:content_tier: free article:published_time: 2015-09-10T18:34:01.000Z article:modified_time: 2026-02-22T10:50:18.434Z article:section: Science og:title: How Human Is New Species Homo Naledi og:description: The newfound species, uncovered in a South African cave system, appears to be an odd combination of primitive and modern features og:url: https://time.com/4029312/how-human-is-homo-naledi/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt4914195436c76385/698862f6f887dc77d6e92486/bones-south-africa-cave.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 og:image:width: 2560 og:image:height: 1440 og:image:alt: Homo naledi og:type: article twitter:card: summary_large_image twitter:title: How Human Is New Species Homo Naledi twitter:description: The newfound species, uncovered in a South African cave system, appears to be an odd combination of primitive and modern features twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt4914195436c76385/698862f6f887dc77d6e92486/bones-south-africa-cave.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 ---  # How 'Human' Is This Newly Discovered Species? > Sponsored content. 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Future Proof is TIME's weekly climate and energy newsletter, written by senior correspondent Justin Worland. It connects the energy transition to the decisions reshaping business, technology, policy and markets. #### Where can I follow the energy transition as a business story? Future Proof covers climate and energy as an economic and business story rather than only an environmental one. It publishes every Friday and is free at time.com/newsletters. #### Who writes Future Proof? Justin Worland, a senior correspondent at TIME and an award-winning climate journalist, writes Future Proof. #### Is Future Proof free? Yes. Future Proof is free at time.com/newsletters.  by [Justin Worland](https://time.com/author/justin-worland/)  ## Justin Worland Senior Correspondent Sep 10, 2015 6:34 PM UTC  Professor Lee Berger holds a replica of the skull of a newly discovered ancient species, named "Homo naledi", during its unveiling outside Johannesburg, on Sept. 10 2015. Professor Lee Berger holds a replica of the skull of a newly discovered ancient species, named "Homo naledi", during its unveiling outside Johannesburg, on Sept. 10 2015. Siphiwe Sibeko—Reuters  by [Justin Worland](https://time.com/author/justin-worland/)  ## Justin Worland Senior Correspondent Sep 10, 2015 6:34 PM UTC The discovery of a new human-related species, named _Homo naledi_, has thrown the evolutionary biology world for a loop. The newfound species_,_ uncovered in a South African cave system, appears to be an odd combination of primitive and modern features not previously seen together. From the remains of at least 15 individuals, scientists assembled the skeletal system of _Homo naledi_ and [published](http://elifesciences.org/content/4/e09560) the findings in the journal eLife. The new species has some remarkably human-like similarities, namely its hands and feet—though its brain is much smaller, as is its frame. Human hands have played a key role in the evolution of _Homo sapiens,_ and that’s one of the similarities between humans and _Homo naledi_ _._ Individuals of the _Homo naledi_ species had opposable thumbs much like our own that would have allowed them dexterity somewhat like that of humans. The curved nature of the hands also suggests that the species may have had climbing abilities. Many of our close ancestors, including chimpanzees and apes, have opposable thumbs. Perhaps the most significant similarity is not anatomical. Scientists say the cave location the _Homo naledi_ remains were found appears to be a burial chamber. Burying the dead was a practice previously thought to be a unique human trait. These similarities carry significance from an evolutionary perspective, but a number of traits make humans stand out from our predecessors. Human brains are typically between 1,100 and 1,200 cubic centimeters. Scientists estimated that the brain in _Homo naledi_ would have been about half that size. Brain size isn’t everything when it comes to intelligent life and evolution, of course, but the structure of the brain in _Homo naledi_, revealed by the shape of the skull, also suggests a more primitive brain. Together, when comparing humans to a direct ancestor, the brain does suggest some distance between humans and _Homo naledi._ The frame, including the shoulders and pelvis, also bears closer resemblance to early hominin species. Overall, scientists believe _Homo naledi_ individuals weigh less than their human counterparts. The differences between humans and _Homo naledi_ are significant, but that doesn’t diminish the significance of the finding. The discovery of a human-related species just underscores how little we know about the lifeforms the preceded ours’ millions of years ago. ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/4029312/how-human-is-homo-naledi/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/4029312/how-human-is-homo-naledi/"},"headline":"How 'Human' Is This Newly Discovered Species?","datePublished":"2015-09-10T18:34:01.000Z","dateModified":"2026-02-22T10:50:18.434Z","description":"The discovery of Homo naledi has thrown the evolutionary biology world for a loop","url":"https://time.com/4029312/how-human-is-homo-naledi/","keywords":["animals"],"thumbnailUrl":"https://static.time.com/v3/assets/bltea6093859af6183b/blt4914195436c76385/698862f6f887dc77d6e92486/bones-south-africa-cave.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","author":[{"@type":"Person","name":"Justin Worland","jobTitle":"Senior Correspondent","url":"https://time.com/author/justin-worland/"}],"articleSection":"Science","image":[{"@type":"ImageObject","url":"https://static.time.com/v3/assets/bltea6093859af6183b/blt4914195436c76385/698862f6f887dc77d6e92486/bones-south-africa-cave.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","width":1200,"height":675,"headline":"Homo naledi","caption":"Homo naled","creditText":"Siphiwe Sibeko—Reuters","representativeOfPage":true}],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/section/science/","name":"Science"}},{"@type":"ListItem","position":2,"item":{"@id":"/tag/animals/","name":"animals"}},{"@type":"ListItem","position":3,"item":{"@id":"https://time.com/4029312/how-human-is-homo-naledi/","name":"How 'Human' Is This Newly Discovered Species?"}}]}] ```