Matches in SemOpenAlex for { <https://semopenalex.org/work/W2789926504> ?p ?o ?g. }
- W2789926504 endingPage "640" @default.
- W2789926504 startingPage "604" @default.
- W2789926504 abstract "Understanding ontogenetic patterns is important in vertebrate paleontology because the assessed skeletal maturity of an individual often has implications for paleobiogeography, species synonymy, paleobiology, and body size evolution of major clades. Further, for many groups the only means of confidently determining ontogenetic status of an organism is through the destructive process of histological sampling. Although the ontogenetic patterns of Late Jurassic and Cretaceous dinosaurs are better understood, knowledge of the ontogeny of the earliest dinosaurs is relatively poor because most species-level growth series known from these groups are small (usually, maximum of n ~ 5) and incomplete. To investigate the morphological changes that occur during ontogeny in early dinosaurs, I used ontogenetic sequence analysis (OSA) to reconstruct developmental sequences of morphological changes in the postcranial ontogeny of the early theropods Coelophysis bauri and Megapnosaurus rhodesiensis, both of which are known from large sample sizes (n = 174 and 182, respectively). I found a large amount of sequence polymorphism (i.e. intraspecific variation in developmental patterns) in both taxa, and especially in C. bauri, which possesses this variation in every element analyzed. Megapnosaurus rhodesiensis is similar, but it possesses no variation in the sequence of development of ontogenetic characters in the tibia and tarsus. Despite the large amount of variation in development, many characters occur consistently earlier or later in ontogeny and could therefore be important morphological features for assessing the relative maturity of other early theropods. Additionally, there is a phylogenetic signal to the order in which homologous characters appear in ontogeny, with homologous characters appearing earlier or later in developmental sequences of early theropods and the close relatives of dinosaurs, silesaurids. Many of these morphological features are important characters for the reconstruction of archosaurian phylogeny (e.g. trochanteric shelf). Because these features vary in presence or appearance with ontogeny, these characters should be used with caution when undertaking phylogenetic analyses in these groups, since a specimen may possess certain character states owing to ontogenetic stage, not evolutionary relationships." @default.
- W2789926504 created "2018-03-29" @default.
- W2789926504 creator A5048282866 @default.
- W2789926504 date "2018-01-23" @default.
- W2789926504 modified "2023-10-15" @default.
- W2789926504 title "Developmental patterns and variation among early theropods" @default.
- W2789926504 cites W1832897692 @default.
- W2789926504 cites W1852998243 @default.
- W2789926504 cites W1903457193 @default.
- W2789926504 cites W1944447591 @default.
- W2789926504 cites W1969396291 @default.
- W2789926504 cites W1970739414 @default.
- W2789926504 cites W1970959421 @default.
- W2789926504 cites W1972699172 @default.
- W2789926504 cites W1974589744 @default.
- W2789926504 cites W1980642358 @default.
- W2789926504 cites W1980965871 @default.
- W2789926504 cites W1981418482 @default.
- W2789926504 cites W1990732510 @default.
- W2789926504 cites W1992776306 @default.
- W2789926504 cites W1994182215 @default.
- W2789926504 cites W2002503490 @default.
- W2789926504 cites W2008032699 @default.
- W2789926504 cites W2009094188 @default.
- W2789926504 cites W2017861968 @default.
- W2789926504 cites W2020878527 @default.
- W2789926504 cites W2024771330 @default.
- W2789926504 cites W2026936178 @default.
- W2789926504 cites W2028973392 @default.
- W2789926504 cites W2030324538 @default.
- W2789926504 cites W2030417714 @default.
- W2789926504 cites W2031566253 @default.
- W2789926504 cites W2037195789 @default.
- W2789926504 cites W2038077536 @default.
- W2789926504 cites W2038207715 @default.
- W2789926504 cites W2039640942 @default.
- W2789926504 cites W2041587645 @default.
- W2789926504 cites W2044005382 @default.
- W2789926504 cites W2044849518 @default.
- W2789926504 cites W2050159958 @default.
- W2789926504 cites W2050709074 @default.
- W2789926504 cites W2052940923 @default.
- W2789926504 cites W2053435550 @default.
- W2789926504 cites W2054285217 @default.
- W2789926504 cites W2056991518 @default.
- W2789926504 cites W2059514783 @default.
- W2789926504 cites W2066146855 @default.
- W2789926504 cites W2066306833 @default.
- W2789926504 cites W2070199632 @default.
- W2789926504 cites W2075051078 @default.
- W2789926504 cites W2075629590 @default.
- W2789926504 cites W2077603276 @default.
- W2789926504 cites W2085040988 @default.
- W2789926504 cites W2088558337 @default.
- W2789926504 cites W2092003037 @default.
- W2789926504 cites W2094698530 @default.
- W2789926504 cites W2095429551 @default.
- W2789926504 cites W2097862648 @default.
- W2789926504 cites W2097975852 @default.
- W2789926504 cites W2099666527 @default.
- W2789926504 cites W2101751293 @default.
- W2789926504 cites W2106077668 @default.
- W2789926504 cites W2111223103 @default.
- W2789926504 cites W2111421474 @default.
- W2789926504 cites W2111465137 @default.
- W2789926504 cites W2112889981 @default.
- W2789926504 cites W2116590863 @default.
- W2789926504 cites W2122574584 @default.
- W2789926504 cites W2123722233 @default.
- W2789926504 cites W2140942114 @default.
- W2789926504 cites W2145346307 @default.
- W2789926504 cites W2152425246 @default.
- W2789926504 cites W2154387053 @default.
- W2789926504 cites W2154414810 @default.
- W2789926504 cites W2156727805 @default.
- W2789926504 cites W2162762344 @default.
- W2789926504 cites W2164660718 @default.
- W2789926504 cites W2165747516 @default.
- W2789926504 cites W2167580694 @default.
- W2789926504 cites W2171607814 @default.
- W2789926504 cites W2172140341 @default.
- W2789926504 cites W2174214743 @default.
- W2789926504 cites W2175280492 @default.
- W2789926504 cites W2176430550 @default.
- W2789926504 cites W2179073245 @default.
- W2789926504 cites W2180522875 @default.
- W2789926504 cites W2183114811 @default.
- W2789926504 cites W2186225655 @default.
- W2789926504 cites W2192703335 @default.
- W2789926504 cites W2197414505 @default.
- W2789926504 cites W2268851995 @default.
- W2789926504 cites W2271742164 @default.
- W2789926504 cites W2276824201 @default.
- W2789926504 cites W2279103404 @default.
- W2789926504 cites W2280099985 @default.
- W2789926504 cites W2281323456 @default.
- W2789926504 cites W2285964556 @default.
- W2789926504 cites W2291492864 @default.