Morphobank

Project 4893: C. Suarez, A. M. Forasiepi, M. J. Babot, T. Shinmura, J. Luque, R. D. Vanegas, E. A. Cadena, F. J. Goin. 2023. A sabre-tooth predator from the Neotropics: Cranial morphology of Anachlysictis gracilis Goin, 1997 (Metatheria, Thylacosmilidae), based on new specimens from La Venta (Middle Miocene, Colombia). Geodiversitas. 45 (18):497-572.

Specimen: † Anachlysictis gracilis (VPPLT:VPPLT 1612)
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Abstract

The fossil metatherian assemblage from La Venta (Middle Miocene, Colombia) is one of the most diverse in South America, and it is critical to understand the Neogene radiation of this group in this continent. La Venta contains the northernmost record of Thylacosmilidae Riggs, 1933 (Metatheria, Sparassodonta): Anachlysictis gracilis Goin, 1997, the first thylacosmilid species named for the Neotropics. This taxon was described mostly based on mandibular remains. Recent fieldwork and work in collections led to the discovery of new materials for this species, including the most complete skeleton ever found for this Sparassodonta Ameghino, 1894. Here, we present a detailed description of the cranial osteology and dentition of A. gracilis, which elucidates anatomical aspects previously inferred but hitherto unconfirmed. We investigate the phylogeny, and ecomorphological parameters of this taxon (diet and body mass) to set the evolutionary context of the species, understand its paleobiology, and evaluate palaeoecological implications. Additionally, we revise the phylogeny of the thylacosmilids, recovering the traditional classification of the group, differentiated from the proborhyaenids and borhyaenids. This work also proposes a new reconstruction of the external morphology of the head of A. gracilis based on 3D scans of the new referred materials.

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Article DOI: 10.5252/geodiversitas2023v45a18

Project DOI: 10.7934/P4893, http://dx.doi.org/10.7934/P4893

This project contains	Matrices
1 Media 1 Matrix 52 Taxa 1 Specimen 403 Characters Total size of project's media files: 10.54M Download Project SDD File	Total scored cells: 12118 Total media associated with cells: 0 Total labels associated with cell media: 0
	Characters
	Total characters: 403 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 907 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:312/91

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MorphoBank Project 4893

Creation Date:
21 September 2023
Publication Date:
14 October 2023
Media downloads: 2
Matrix downloads: 8

Authors' Institutions

University of Cambridge

Museo de La Plata

Universidad Nacional de la Plata (UNLP)

Field Museum of Natural History

Smithsonian Tropical Research Institute

Universidad del Rosario

Museo de Historia Natural la Tatacoa

Ashoro Museum of Paleontology

Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA)

Members

Catalina Suarez
Project Administrator

403

12118
(11682, 0, 436)

Taxonomic Overview for Matrix 'M29498' (52 Taxa)

taxon	unscored cells	scored cells	no cell support	NPA cells	"-" cells	cell images	labels on cell images	member access
[1] † prokennalestes Taxon name last Modified on 09/21/23	261	137	136	0	6	0	0	1
[2] † Asioryctes nemegtensis Taxon name last Modified on 09/21/23	148	240	240	0	15	0	0	1
[3] † Maelestes gobiensis Taxon name last Modified on 09/21/23	177	214	214	0	12	0	0	1
[4] † Holoclemensia texana Taxon name last Modified on 09/21/23	334	69	69	0	0	0	0	1
[5] † Deltatheroides cretacicus Taxon name last Modified on 09/21/23	331	70	69	0	3	0	0	1
[6] † Deltatheridium pretrituberculare Taxon name last Modified on 09/21/23	177	222	218	0	8	0	0	1
[7] † Kokopellia juddi Taxon name last Modified on 09/21/23	299	105	103	0	0	0	0	1
[8] † Eodelphis browni Taxon name last Modified on 09/21/23	242	163	159	0	2	0	0	1
[9] † Didelphodon vorax Taxon name last Modified on 09/21/23	158	245	242	0	3	0	0	1
[10] † pediomyidae Taxon name last Modified on 09/21/23	249	161	153	0	1	0	0	1
[11] † Alphadon spp. Taxon name last Modified on 09/21/23	284	128	119	0	0	0	0	1
[12] † Asiatherium reshetovi Taxon name last Modified on 09/21/23	210	193	192	0	1	0	0	1
[13] † Herpetotherium fugax Taxon name last Modified on 09/21/23	98	313	302	0	3	0	0	1
[14] † Mimoperadectes spp. Taxon name last Modified on 09/21/23	220	192	181	0	2	0	0	1
[15] Didelphis albiventris Taxon name last Modified on 09/21/23	1	424	397	0	5	0	0	1
[16] Metachirus nudicaudatus Taxon name last Modified on 09/21/23	23	380	375	0	5	0	0	1
[17] Monodelphis spp. Taxon name last Modified on 09/21/23	1	419	398	0	4	0	0	1
[18] Dromiciops gliroides Taxon name last Modified on 09/21/23	7	394	388	0	8	0	0	1
[19] Dasyurus spp. Taxon name last Modified on 09/21/23	7	411	388	0	8	0	0	1
[20] Sminthopsis crassicaudata Taxon name last Modified on 09/21/23	8	395	390	0	5	0	0	1
[21] † Thylacinus cynocephalus Taxon name last Modified on 09/21/23	6	385	378	0	19	0	0	1
[22] † Pucadelphys andinus Taxon name last Modified on 09/21/23	14	402	385	0	4	0	0	1
[23] † Andinodelphys cochabambensis Taxon name last Modified on 09/21/23	24	384	376	0	3	0	0	1
[24] † Mayulestes ferox Taxon name last Modified on 09/21/23	41	359	359	0	3	0	0	1
[25] † Allqokirus australis Taxon name last Modified on 09/21/23	163	237	237	0	3	0	0	1
[26] † Patene simpsoni Taxon name last Modified on 09/21/23	301	103	101	0	0	0	0	1
[27] † Hondadelphys fieldsi Taxon name last Modified on 09/21/23	193	208	208	0	2	0	0	1
[28] † Stylocynus paranensis Taxon name last Modified on 09/21/23	308	96	93	0	0	0	0	1
[29] † UF 27881 Taxon name last Modified on 09/21/23	349	55	51	0	2	0	0	1
[30] † Sallacyon hoffstetteri Taxon name last Modified on 09/21/23	247	150	149	0	7	0	0	1
[31] † Notogale mitis Taxon name last Modified on 09/21/23	236	160	157	0	10	0	0	1
[32] † Sipalocyon spp. Taxon name last Modified on 09/21/23	54	347	338	0	10	0	0	1
[33] † Acyon myctoderos Taxon name last Modified on 09/21/23	183	218	213	0	7	0	0	1
[34] † Cladosictis patagonica Taxon name last Modified on 09/21/23	44	368	349	0	10	0	0	1
[35] † Lycopsis longirostrus Taxon name last Modified on 09/21/23	127	270	265	0	11	0	0	1
[36] † Lycopsis padillai Taxon name last Modified on 09/21/23	366	35	35	0	2	0	0	1
[37] † Lycopsis torresi Taxon name last Modified on 09/21/23	306	93	91	0	6	0	0	1
[38] † Lycopsis viverensis Taxon name last Modified on 09/21/23	307	91	90	0	6	0	0	1
[39] † Prothylacynus patagonicus Taxon name last Modified on 09/21/23	44	350	343	0	16	0	0	1
[40] † Pharsophorus lacerans Taxon name last Modified on 09/21/23	243	154	152	0	8	0	0	1
[41] † Borhyaena tuberata Taxon name last Modified on 09/21/23	59	328	319	0	25	0	0	1
[42] † Arctodictis munizi Taxon name last Modified on 09/21/23	179	204	204	0	20	0	0	1
[43] † Arctodictis sinclairi Taxon name last Modified on 09/21/23	23	355	355	0	25	0	0	1
[44] † Australohyaena antiquua Taxon name last Modified on 09/21/23	172	209	208	0	22	0	0	1
[45] † Callistoe vincei Taxon name last Modified on 09/21/23	98	294	291	0	14	0	0	1
[46] † Paraborhyaena boliviana Taxon name last Modified on 09/21/23	270	127	127	0	6	0	0	1
[47] † Patagosmilus goini Taxon name last Modified on 09/21/23	246	139	136	0	21	0	0	1
[48] † Thylacosmilus atrox Taxon name last Modified on 09/21/23	83	286	281	0	39	0	0	1
[49] † Proborhyaena gigantea Taxon name last Modified on 09/21/23	324	74	73	0	6	0	0	1
[50] † Eomakhaira molossus Taxon name last Modified on 09/21/23	319	85	79	0	5	0	0	1
[51] † IGM 251108 Taxon name last Modified on 09/21/23	331	65	65	0	7	0	0	1
[52] † Anachlysictis gracilis Taxon name last Modified on 09/21/23	203	176	174	0	26	0	0	1

Project downloads

type	number of downloads	Individual items downloaded (where applicable)
Total downloads from project	12
Matrix downloads	8	Suarez_etal_2023_Anachlysictis_Geodiversitas (8 downloads);
Project downloads	2
Media downloads	2	M894496 (2 downloads);