Project 4281: R. R. Duque, F. L. Pinheiro, A. M. Barreto. 2022. The ontogenetic growth of Anhangueridae (Pterosauria, Pterodactyloidea) premaxillary crests as revealed by a crestless Anhanguera specimen. Journal of Vertebrate Paleontology. 42 (1):null.
Abstract
The Anhangueridae are a clade of toothed pterodactyloid pterosaurs, known from their characteristic anteriorly expanded premaxillae and conspicuous rostral sagittal premaxillary and dentary crests. Most known anhanguerids come from the Lower Cretaceous Romualdo Formation within the Araripe Basin of northeast Brazil. With four currently valid genera and several specimens referred to the clade, anhanguerids are the most abundant and diverse tetrapod group in the Romualdo Formation. However, some studies suggest this diversity may be overestimated, as many taxa have been diagnosed based on subtle differences in their premaxillary crests, a structure argued to be either ontogenetically variable or sexually dimorphic. Here we describe an anterior fragment of a gracile pterosaur rostrum that possesses the single diagnostic feature of Anhanguera (fifth and sixth pairs of dental alveoli smaller than the fourth and seventh), but lacks a sagittal crest. The affinities of the new fossil among other toothed pterosaurs were tested through both cladistic and geometric morphometric approaches, which allow referral of the new specimen to Anhanguera. The absence of a crest in the new specimen of Anhanguera suggests that this structure varies in terms of ontogeny and/or sex, and that perhaps it was influenced by sexual selection.Read the article »
Article DOI: 10.1080/02724634.2022.2116984
Project DOI: 10.7934/P4281, http://dx.doi.org/10.7934/P4281
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 4993 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 146 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 395 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:146/0 |
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MorphoBank Project 4281
MorphoBank Project 4281
- Creation Date:
20 June 2022 - Publication Date:
12 January 2023 - Project views: 5427
- Matrix downloads: 3
Authors' Institutions
- Universidade Federal de Pernmabuco (UFPE)
- Universidade Federal do Pampa (UNIPAMPA)
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
Felipe Pinheiro Project Administrator | 62 | 0 | 0 | 146 | 0 | 0 | 4993 (4654, 0, 339) | 0 | 0 | 0 | ||||
Alcina Barreto Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 | ||||
Rudah Duque Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M28804' (61 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] † Ornithosuchus woodwardi Last Modified in 01/12/23 | 3 | 130 | 130 | 0 | 13 | 0 | 0 | 3 |
[2] † Herrerasaurus ischigualastensis Last Modified in 01/12/23 | 2 | 131 | 131 | 0 | 13 | 0 | 0 | 3 |
[3] † Scleromochlus taylori Last Modified in 01/12/23 | 34 | 99 | 99 | 0 | 13 | 0 | 0 | 3 |
[4] † Anurognathus ammoni Last Modified in 01/12/23 | 20 | 113 | 113 | 0 | 13 | 0 | 0 | 3 |
[5] † Rhamphorhynchus muensteri Last Modified in 01/12/23 | 3 | 130 | 130 | 0 | 13 | 0 | 0 | 3 |
[6] † Darwinopterus linglongtaensis Last Modified in 01/12/23 | 28 | 111 | 111 | 0 | 7 | 0 | 0 | 3 |
[7] † Darwinopterus robustodens Last Modified in 01/12/23 | 36 | 103 | 103 | 0 | 7 | 0 | 0 | 3 |
[8] † Pterodactylus antiquus Last Modified in 01/12/23 | 14 | 121 | 121 | 0 | 11 | 0 | 0 | 3 |
[9] † Nyctosaurus gracilis Last Modified in 01/12/23 | 15 | 118 | 118 | 0 | 13 | 0 | 0 | 3 |
[10] † Muzquizopteryx coahuilensis Last Modified in 01/12/23 | 83 | 57 | 57 | 0 | 6 | 0 | 0 | 3 |
[11] † Pteranodon longiceps Last Modified in 01/12/23 | 3 | 132 | 132 | 0 | 11 | 0 | 0 | 3 |
[12] † Tethydraco regalis Last Modified in 01/12/23 | 140 | 6 | 6 | 0 | 0 | 0 | 0 | 3 |
[13] † Dsungaripterus weii Last Modified in 01/12/23 | 14 | 125 | 125 | 0 | 7 | 0 | 0 | 3 |
[14] † Noripterus parvus Last Modified in 01/12/23 | 55 | 84 | 84 | 0 | 7 | 0 | 0 | 3 |
[15] † Keresdrakon vilsoni Last Modified in 01/12/23 | 82 | 60 | 60 | 0 | 4 | 0 | 0 | 3 |
[16] † Tupuxuara leonardii Last Modified in 01/12/23 | 17 | 124 | 124 | 0 | 5 | 0 | 0 | 3 |
[17] † Thalassodromeus sethi Last Modified in 01/12/23 | 49 | 92 | 92 | 0 | 5 | 0 | 0 | 3 |
[18] † Caupedactylus ybaka Last Modified in 01/12/23 | 42 | 99 | 99 | 0 | 5 | 0 | 0 | 3 |
[19] † Aymberedactylus cearensis Last Modified in 01/12/23 | 121 | 22 | 22 | 0 | 3 | 0 | 0 | 3 |
[20] † Tupandactylus imperator Last Modified in 01/12/23 | 72 | 69 | 69 | 0 | 5 | 0 | 0 | 3 |
[21] † Caiuajara dobruski Last Modified in 01/12/23 | 39 | 102 | 102 | 0 | 5 | 0 | 0 | 3 |
[22] † Europejara olcadesorum Last Modified in 01/12/23 | 111 | 32 | 32 | 0 | 3 | 0 | 0 | 3 |
[23] † Tapejara wellnhoferi Last Modified in 01/12/23 | 19 | 122 | 122 | 0 | 5 | 0 | 0 | 3 |
[24] † Sinopterus dongi Last Modified in 01/12/23 | 30 | 111 | 111 | 0 | 5 | 0 | 0 | 3 |
[25] † Huaxiapterus corollatus Last Modified in 01/12/23 | 74 | 67 | 67 | 0 | 5 | 0 | 0 | 3 |
[26] † Huaxiapterus benxiensis Last Modified in 01/12/23 | 56 | 85 | 85 | 0 | 5 | 0 | 0 | 3 |
[27] † Eopteranodon lii Last Modified in 01/12/23 | 91 | 50 | 50 | 0 | 5 | 0 | 0 | 3 |
[28] † Chaoyangopterus zhangi Last Modified in 01/12/23 | 72 | 65 | 65 | 0 | 9 | 0 | 0 | 3 |
[29] † Shenzhoupterus chaoyangensis Last Modified in 01/12/23 | 53 | 86 | 86 | 0 | 7 | 0 | 0 | 3 |
[30] † Jidapterus edentus Last Modified in 01/12/23 | 73 | 64 | 64 | 0 | 9 | 0 | 0 | 3 |
[31] † Quetzalcoatlus sp. Last Modified in 01/12/23 | 33 | 101 | 101 | 0 | 12 | 0 | 0 | 3 |
[32] † Zhejiangopterus linhaiensis Last Modified in 01/12/23 | 41 | 88 | 88 | 0 | 17 | 0 | 0 | 3 |
[33] † Azhdarcho lancicollis Last Modified in 01/12/23 | 106 | 34 | 34 | 0 | 6 | 0 | 0 | 3 |
[34] † Hongshanopterus lacustris Last Modified in 01/12/23 | 97 | 46 | 46 | 0 | 3 | 0 | 0 | 3 |
[35] † Nurhachius ignaciobritoi Last Modified in 01/12/23 | 45 | 91 | 91 | 0 | 10 | 0 | 0 | 3 |
[36] † Istiodactylus latidens Last Modified in 01/12/23 | 35 | 100 | 100 | 0 | 11 | 0 | 0 | 3 |
[37] † Istiodactylus sinensis Last Modified in 01/12/23 | 48 | 87 | 87 | 0 | 11 | 0 | 0 | 3 |
[38] † Haopterus gracilis Last Modified in 01/12/23 | 74 | 65 | 65 | 0 | 7 | 0 | 0 | 3 |
[39] † Ikrandraco avatar Last Modified in 01/12/23 | 39 | 98 | 98 | 0 | 9 | 0 | 0 | 3 |
[40] † Lonchodraco giganteus Last Modified in 01/12/23 | 111 | 34 | 34 | 0 | 1 | 0 | 0 | 3 |
[41] † Tropeognathus mesembrinus Last Modified in 11/14/22 | 39 | 106 | 106 | 0 | 1 | 0 | 0 | 3 |
[42] † AMNH 22555 Last Modified in 01/12/23 | 27 | 118 | 118 | 0 | 1 | 0 | 0 | 3 |
[43] † Anhanguera blittersdorffi Last Modified in 01/12/23 | 58 | 87 | 87 | 0 | 1 | 0 | 0 | 3 |
[44] † Anhanguera piscator Last Modified in 01/12/23 | 17 | 128 | 128 | 0 | 1 | 0 | 0 | 3 |
[45] † Liaoningopterus gui Last Modified in 01/12/23 | 85 | 61 | 61 | 0 | 0 | 0 | 0 | 3 |
[46] † Siroccopteryx moroccensis Last Modified in 01/12/23 | 119 | 27 | 27 | 0 | 0 | 0 | 0 | 3 |
[47] † Uktenadactylus wadleighi Last Modified in 01/12/23 | 123 | 23 | 23 | 0 | 0 | 0 | 0 | 3 |
[48] † Coloborhynchus clavirostris Last Modified in 01/12/23 | 123 | 23 | 23 | 0 | 0 | 0 | 0 | 3 |
[49] † Ludodactylus sibbicki Last Modified in 01/12/23 | 62 | 83 | 83 | 0 | 1 | 0 | 0 | 3 |
[50] † Guidraco venator Last Modified in 01/12/23 | 70 | 73 | 73 | 0 | 3 | 0 | 0 | 3 |
[51] † Caulkicephalus trimicrodon Last Modified in 01/12/23 | 112 | 34 | 34 | 0 | 0 | 0 | 0 | 3 |
[52] † Cearadactylus atrox Last Modified in 01/12/23 | 79 | 65 | 65 | 0 | 2 | 0 | 0 | 3 |
[53] † Maaradactylus kellneri Last Modified in 01/12/23 | 86 | 60 | 60 | 0 | 0 | 0 | 0 | 3 |
[54] † Camposipterus nasutus Last Modified in 01/12/23 | 124 | 22 | 22 | 0 | 0 | 0 | 0 | 3 |
[55] † Cimoliopterus cuvieri Last Modified in 01/12/23 | 120 | 25 | 25 | 0 | 1 | 0 | 0 | 3 |
[56] † Ornithocheirus simus Last Modified in 01/12/23 | 123 | 22 | 22 | 0 | 1 | 0 | 0 | 3 |
[57] † Hamipterus tianshanensis Last Modified in 01/12/23 | 34 | 106 | 106 | 0 | 6 | 0 | 0 | 3 |
[58] † Iberodactylus andreui Last Modified in 01/12/23 | 119 | 27 | 27 | 0 | 0 | 0 | 0 | 3 |
[59] † Kariridraco dianae Last Modified in 01/12/23 | 92 | 49 | 49 | 0 | 5 | 0 | 0 | 3 |
[60] † Tupuxuara longicristatus Last Modified in 01/12/23 | 107 | 35 | 35 | 0 | 4 | 0 | 0 | 3 |
[61] † UFPE 8283ufpe 8283 Last Modified in 01/12/23 | 114 | 26 | 26 | 0 | 6 | 0 | 0 | 3 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 5427 | |
Project overview | 316 | |
Media views | 946 | Media search (720 views); M848104 (226 views); |
Matrix views | 207 | Matrix landing page (192 views); Phylogenetic matrix (15 views); |
Specimen list | 1085 | |
Taxon list | 2420 | |
Views for media list | 284 | |
Bibliography | 168 | |
Documents list | 1 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 7 | |
Matrix downloads | 3 | Phylogenetic matrix (3 downloads); |
Project downloads | 4 |