Morphobank

Project 4513: S. P. Zack, T. A. Penkrot. 2024. New material of Lophiparamys debequensis from the Willwood Formation (early Eocene) of Wyoming, including the first postcrania of the genus. Journal of Paleontology. epub ahead of print:1-16.

Specimen: † Lophiparamys debequensis (USNM:527685e)
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Abstract

We report new material of the rare early Eocene rodent Lophiparamys debequensis from the Willwood Formation of the southern Bighorn Basin, north-central Wyoming. The new material constitutes the first record of L. debequensis from the Bighorn Basin and documents aspects of the anatomy of Lophiparamys that were previously unknown, including a portion of the maxilla and a portion of the tarsus. The maxillary fragment demonstrates that Lophiparamys has a small P3 and a relatively large infraorbital canal. The tarsus of Lophiparamys is similar to other early rodents but differs in a few features that suggest an arboreal locomotor repertoire, including an asymmetric astragalar trochlea, long astragalar neck, transverse astragalar sustentacular facet, short calcaneal tuber, elongate calcaneal ectal facet, and circular calcaneal cuboid facet. The presence of arboreally adapted features in the tarsus of Lophiparamys is consistent with a hypothesized relationship between small-bodied Eocene microparamyine rodents and extant Gliridae. Phylogenetic analysis fails to consistently support this relationship or monophyly of Microparamyinae, but both remain plausible. Comparison of L. debequensis with other species of the genus emphasize the species’ distinctiveness of and suggest the presence of multiple lineages of Lophiparamys.

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Article DOI: 10.1017/jpa.2023.88

Project DOI: 10.7934/P4513, http://dx.doi.org/10.7934/P4513

This project contains	Matrices
1 Media 1 Matrix 3 Documents 94 Taxa 1 Specimen 108 Characters Total size of project's media files: 716.92k Download Project SDD File	Total scored cells: 8550 Total media associated with cells: 0 Total labels associated with cell media: 0
	Characters
	Total characters: 108 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 310 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:2/106

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MorphoBank Project 4513

Creation Date:
29 December 2022
Publication Date:
17 November 2023
Project views: 1775
Matrix downloads: 3

Authors' Institutions

University of Arizona

Members

Shawn Zack
Project Administrator

108

8550
(8518, 32, 0)

Taxonomic Overview for Matrix 'M29103' (94 Taxa)

taxon	unscored cells	scored cells	no cell support	NPA cells	"-" cells	cell images	labels on cell images	member access
[1] † Chambius Last Modified in 06/19/23	42	66	66	0	0	0	0	1
[2] † Macrocranion Last Modified in 06/19/23	24	85	84	0	0	0	0	1
[3] † Leptacodon Last Modified in 06/19/23	23	85	85	0	0	0	0	1
[4] † Palaechthon Last Modified in 06/19/23	23	85	85	0	0	0	0	1
[5] † Plesiolestes Last Modified in 06/19/23	23	85	85	0	0	0	0	1
[6] † Protungulatum Last Modified in 06/19/23	23	85	85	0	0	0	0	1
[7] † Mimotona Last Modified in 06/19/23	19	89	89	0	0	0	0	1
[8] † Gomphos Last Modified in 06/19/23	26	82	82	0	0	0	0	1
[9] † Eurymylus Last Modified in 06/19/23	27	81	81	0	0	0	0	1
[10] † Heomys Last Modified in 06/19/23	16	92	92	0	0	0	0	1
[11] † Rhombomylus Last Modified in 06/19/23	16	93	92	0	0	0	0	1
[12] † Decipomys Last Modified in 06/19/23	53	55	55	0	0	0	0	1
[13] † Alagomys Last Modified in 06/19/23	17	92	91	0	0	0	0	1
[14] † Tribosphenomys Last Modified in 06/19/23	12	96	96	0	0	0	0	1
[15] † Ivanantonia Last Modified in 06/19/23	63	45	45	0	0	0	0	1
[16] † Cocomys Last Modified in 06/19/23	13	95	95	0	0	0	0	1
[17] † Bumbanomys Last Modified in 06/19/23	27	82	81	0	0	0	0	1
[18] † Tamquammys Last Modified in 06/19/23	12	97	96	0	0	0	0	1
[19] † Tsinlingomys Last Modified in 06/19/23	13	95	95	0	0	0	0	1
[20] † Protataromys Last Modified in 06/19/23	25	85	83	0	0	0	0	1
[21] † Yindirtemys Last Modified in 06/19/23	14	97	94	0	0	0	0	1
[22] † Tataromys Last Modified in 06/19/23	21	87	87	0	0	0	0	1
[23] † Advenimus Last Modified in 06/19/23	13	100	95	0	0	0	0	1
[24] † Petrokozlovia Last Modified in 06/19/23	18	90	90	0	0	0	0	1
[25] † Yuomys Last Modified in 06/19/23	22	87	86	0	0	0	0	1
[26] † Anadianomys Last Modified in 06/19/23	26	83	82	0	0	0	0	1
[27] † Bandaomys Last Modified in 06/19/23	25	83	83	0	0	0	0	1
[28] † Birbalomys Last Modified in 06/19/23	1	112	107	0	0	0	0	1
[29] † Chapattimys Last Modified in 06/19/23	5	106	103	0	0	0	0	1
[30] † Fallomus Last Modified in 06/19/23	4	109	104	0	0	0	0	1
[31] † Diatomys Last Modified in 06/19/23	28	80	80	0	0	0	0	1
[32] † Baluchimys Last Modified in 06/19/23	19	91	89	0	0	0	0	1
[33] † Lophibaluchia Last Modified in 06/19/23	26	87	82	0	0	0	0	1
[34] † Lindsaya Last Modified in 06/19/23	24	85	84	0	0	0	0	1
[35] † Hodsahibia Last Modified in 06/19/23	4	116	104	0	0	0	0	1
[36] † Bugtimys Last Modified in 06/19/23	1	109	107	0	0	0	0	1
[37] † Protophiomys Last Modified in 06/19/23	7	106	101	0	0	0	0	1
[38] † Phiomys Last Modified in 06/19/23	11	101	97	0	0	0	0	1
[39] † Metaphiomys Last Modified in 06/19/23	23	89	85	0	0	0	0	1
[40] † Diamantomys Last Modified in 06/19/23	22	86	86	0	0	0	0	1
[41] † Paraphiomys Last Modified in 06/19/23	20	89	88	0	0	0	0	1
[42] † Paraulacodus Last Modified in 06/19/23	28	80	80	0	0	0	0	1
[43] † Platypittamys Last Modified in 06/19/23	15	93	93	0	0	0	0	1
[44] † Incamys Last Modified in 06/19/23	5	105	103	0	0	0	0	1
[45] † Sallamys Last Modified in 06/19/23	15	94	93	0	0	0	0	1
[46] † Branisamys Last Modified in 06/19/23	16	93	92	0	0	0	0	1
[47] † Tsaganomys Last Modified in 06/19/23	15	94	93	0	0	0	0	1
[48] † Pappocricetodon Last Modified in 06/19/23	36	73	72	0	0	0	0	1
[49] † Atavocricetodon Last Modified in 06/19/23	36	74	72	0	0	0	0	1
[50] † Pseudocricetodon Last Modified in 06/19/23	42	67	66	0	0	0	0	1
[51] † Sinosminthus Last Modified in 06/19/23	43	65	65	0	0	0	0	1
[52] † Primisminthus Last Modified in 06/19/23	45	67	63	0	0	0	0	1
[53] † Aksyiromys Last Modified in 06/19/23	48	62	60	0	0	0	0	1
[54] † Zindapiria Last Modified in 06/19/23	35	75	73	0	0	0	0	1
[55] † Yoderimys Last Modified in 06/19/23	1	108	107	0	0	0	0	1
[56] † Eomys Last Modified in 06/19/23	8	104	100	0	0	0	0	1
[57] † Glibia Last Modified in 06/19/23	30	79	78	0	0	0	0	1
[58] † Zegdoumys Last Modified in 06/19/23	38	70	70	0	0	0	0	1
[59] † Paranomalurus Last Modified in 06/19/23	22	86	86	0	0	0	0	1
[60] † Nementchamys Last Modified in 06/19/23	21	89	87	0	0	0	0	1
[61] † Downsimys Last Modified in 06/19/23	12	97	96	0	0	0	0	1
[62] † Janimus Last Modified in 06/19/23	24	84	84	0	0	0	0	1
[63] † Eutypomys Last Modified in 06/19/23	20	89	88	0	0	0	0	1
[64] † Eogliravus Last Modified in 06/19/23	12	100	96	0	0	0	0	1
[65] † Glamys Last Modified in 06/19/23	21	87	87	0	0	0	0	1
[66] † Bransatoglis Last Modified in 06/19/23	11	98	97	0	0	0	0	1
[67] † Knightomys Last Modified in 06/19/23	16	93	92	0	0	0	0	1
[68] † Prolapsus Last Modified in 06/19/23	15	95	93	0	0	0	0	1
[69] † Pauromys Last Modified in 06/19/23	8	102	100	0	0	0	0	1
[70] † Mysops Last Modified in 06/19/23	17	93	91	0	0	0	0	1
[71] † Ardynomys Last Modified in 06/19/23	18	94	90	0	0	0	0	1
[72] † Franimys Last Modified in 06/19/23	57	51	51	0	0	0	0	1
[73] † Paramys Last Modified in 06/19/23	3	105	105	0	0	0	0	1
[74] † Reithroparamys Last Modified in 06/19/23	16	94	92	0	0	0	0	1
[75] † Acritoparamys Last Modified in 06/19/23	17	91	91	0	0	0	0	1
[76] † Ailuravus Last Modified in 06/19/23	2	107	106	0	0	0	0	1
[77] † Corbarimys Last Modified in 06/19/23	6	105	102	0	0	0	0	1
[78] † Hartenbergeromys Last Modified in 06/19/23	8	103	100	0	0	0	0	1
[79] † Pantrogna Last Modified in 06/19/23	3	111	105	0	0	0	0	1
[80] † Protadelomys Last Modified in 06/19/23	1	108	107	0	0	0	0	1
[81] † Pseudoltinomys Last Modified in 06/19/23	3	108	105	0	0	0	0	1
[82] † Theridomys Last Modified in 06/19/23	4	106	104	0	0	0	0	1
[83] † Blainvillimys Last Modified in 06/19/23	2	109	106	0	0	0	0	1
[84] † Elfomys Last Modified in 06/19/23	13	97	95	0	0	0	0	1
[85] † Remys Last Modified in 06/19/23	1	110	107	0	0	0	0	1
[86] † Suevosciurus Last Modified in 06/19/23	3	110	105	0	0	0	0	1
[87] † Prosciurus Last Modified in 06/19/23	23	86	85	0	0	0	0	1
[88] † Plesispermophilus Last Modified in 06/19/23	9	101	99	0	0	0	0	1
[89] † Protosciurus Last Modified in 06/19/23	16	92	92	0	0	0	0	1
[90] † Palaeosciurus Last Modified in 06/19/23	2	107	106	0	0	0	0	1
[91] † Zamoramys Last Modified in 06/19/23	41	68	67	0	0	0	0	1
[92] † Lophiparamys debequensis Last Modified in 06/30/23	13	99	94	1	0	0	0	1
[93] † Microparamys hunterae Last Modified in 06/30/23	10	97	96	2	0	0	0	1
[94] † Microparamys sambucus Last Modified in 08/02/23	0	80	79	29	0	0	0	1

Project views

type	number of views	Individual items viewed (where applicable)
Total project views	1775
Project overview	136
Media views	297	Media search (252 views); M897124 (45 views);
Documents list	68
Matrix views	88	Matrix landing page (80 views); Marivaux et al. (2004) matrix with Lophiparamys and Microparamys (8 views);
Views for media list	96
Taxon list	852
Specimen list	175
Bibliography	63

Project downloads

type	number of downloads	Individual items downloaded (where applicable)
Total downloads from project	3
Matrix downloads	3	Marivaux et al. (2004) matrix with Lophiparamys and Microparamys (3 downloads);