Oriol Monclús-Gonzalo, Shubham Pal, Thomas A. Püschel, Alessandro Urciuoli, Víctor Vinuesa, Josep M. Robles, Sergio Almécija, David M. Alba
{"title":"来自Abocador de Can Mata （vall<e:1> - pened<e:1>盆地，东北伊比利亚半岛）的一种古猿Talus：形态上的亲缘关系及其对类人猿运动的进化意义","authors":"Oriol Monclús-Gonzalo, Shubham Pal, Thomas A. Püschel, Alessandro Urciuoli, Víctor Vinuesa, Josep M. Robles, Sergio Almécija, David M. Alba","doi":"10.1002/ajpa.70043","DOIUrl":null,"url":null,"abstract":"<div>\n \n \n <section>\n \n <h3> Objectives</h3>\n \n <p>The functional interpretation of postcranial remains of Middle Miocene great apes from Europe (dryopithecines) suggests a combination of quadrupedalism and orthograde behaviors without modern analogs. We provide further insights based on an isolated dryopithecine talus (IPS85037) from the Middle Miocene (11.7 Ma) Abocador de Can Mata locality ACM/C8-B* (Vallès-Penedès Basin, NE Iberian Peninsula), which represents the most complete one known to date.</p>\n </section>\n \n <section>\n \n <h3> Material and Methods</h3>\n \n <p>We compare the specimen with an extant anthropoid sample (<i>n</i> = 68) and the stem hominoid <i>Ekembo heseloni</i> (KMN RU 2036, ~18 Ma, Kenya) using 3D geometric morphometrics. For the two fossil tali, we assess their phenetic affinities using a between-group principal components analysis (bgPCA), estimate body mass based on centroid size, and make locomotor inferences using a partial least-squares regression (PLSR) between talar shape and locomotor repertoire.</p>\n </section>\n \n <section>\n \n <h3> Results</h3>\n \n <p>Its large inferred body mass (~38 kg) and the possession of several modern hominoid-like features (albeit combined with more plesiomorphic traits) support the attribution of IPS85037 to a male dryopithecine. The bgPCA indicates that IPS85037 falls close to the extant hominoid variation and is less cercopithecoid-like than that of <i>Ekembo</i>, whose inferred locomotor repertoire is vastly dominated by quadrupedalism (81%). In contrast, the locomotor repertoire inferred from IPS85037 combines important quadrupedal (32%) and vertical climbing/clambering (50%) components with only moderate suspension (10%).</p>\n </section>\n \n <section>\n \n <h3> Discussion</h3>\n \n <p>Our results align with previous inferences derived from other postcranial elements of Middle Miocene dryopithecines and, given their classification as crown hominoids, support the hypothesis that certain suspensory adaptations shared by extant hylobatids and hominids likely evolved independently.</p>\n </section>\n </div>","PeriodicalId":29759,"journal":{"name":"American Journal of Biological Anthropology","volume":"186 4","pages":""},"PeriodicalIF":1.7000,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A Dryopithecine Talus From Abocador de Can Mata (Vallès-Penedès Basin, NE Iberian Peninsula): Morphometric Affinities and Evolutionary Implications for Hominoid Locomotion\",\"authors\":\"Oriol Monclús-Gonzalo, Shubham Pal, Thomas A. Püschel, Alessandro Urciuoli, Víctor Vinuesa, Josep M. Robles, Sergio Almécija, David M. Alba\",\"doi\":\"10.1002/ajpa.70043\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n \\n <section>\\n \\n <h3> Objectives</h3>\\n \\n <p>The functional interpretation of postcranial remains of Middle Miocene great apes from Europe (dryopithecines) suggests a combination of quadrupedalism and orthograde behaviors without modern analogs. We provide further insights based on an isolated dryopithecine talus (IPS85037) from the Middle Miocene (11.7 Ma) Abocador de Can Mata locality ACM/C8-B* (Vallès-Penedès Basin, NE Iberian Peninsula), which represents the most complete one known to date.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Material and Methods</h3>\\n \\n <p>We compare the specimen with an extant anthropoid sample (<i>n</i> = 68) and the stem hominoid <i>Ekembo heseloni</i> (KMN RU 2036, ~18 Ma, Kenya) using 3D geometric morphometrics. For the two fossil tali, we assess their phenetic affinities using a between-group principal components analysis (bgPCA), estimate body mass based on centroid size, and make locomotor inferences using a partial least-squares regression (PLSR) between talar shape and locomotor repertoire.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Results</h3>\\n \\n <p>Its large inferred body mass (~38 kg) and the possession of several modern hominoid-like features (albeit combined with more plesiomorphic traits) support the attribution of IPS85037 to a male dryopithecine. The bgPCA indicates that IPS85037 falls close to the extant hominoid variation and is less cercopithecoid-like than that of <i>Ekembo</i>, whose inferred locomotor repertoire is vastly dominated by quadrupedalism (81%). 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A Dryopithecine Talus From Abocador de Can Mata (Vallès-Penedès Basin, NE Iberian Peninsula): Morphometric Affinities and Evolutionary Implications for Hominoid Locomotion
Objectives
The functional interpretation of postcranial remains of Middle Miocene great apes from Europe (dryopithecines) suggests a combination of quadrupedalism and orthograde behaviors without modern analogs. We provide further insights based on an isolated dryopithecine talus (IPS85037) from the Middle Miocene (11.7 Ma) Abocador de Can Mata locality ACM/C8-B* (Vallès-Penedès Basin, NE Iberian Peninsula), which represents the most complete one known to date.
Material and Methods
We compare the specimen with an extant anthropoid sample (n = 68) and the stem hominoid Ekembo heseloni (KMN RU 2036, ~18 Ma, Kenya) using 3D geometric morphometrics. For the two fossil tali, we assess their phenetic affinities using a between-group principal components analysis (bgPCA), estimate body mass based on centroid size, and make locomotor inferences using a partial least-squares regression (PLSR) between talar shape and locomotor repertoire.
Results
Its large inferred body mass (~38 kg) and the possession of several modern hominoid-like features (albeit combined with more plesiomorphic traits) support the attribution of IPS85037 to a male dryopithecine. The bgPCA indicates that IPS85037 falls close to the extant hominoid variation and is less cercopithecoid-like than that of Ekembo, whose inferred locomotor repertoire is vastly dominated by quadrupedalism (81%). In contrast, the locomotor repertoire inferred from IPS85037 combines important quadrupedal (32%) and vertical climbing/clambering (50%) components with only moderate suspension (10%).
Discussion
Our results align with previous inferences derived from other postcranial elements of Middle Miocene dryopithecines and, given their classification as crown hominoids, support the hypothesis that certain suspensory adaptations shared by extant hylobatids and hominids likely evolved independently.
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