UC Museum of Paleontology

eScholarship stats: History by Item for April through July, 2026

Item	Title	Total requests	2026-07	2026-06	2026-05	2026-04
6tm05630	Paleobiology Database User Guide Version 1.0	3,134	286	337	1,069	1,442
9gg7n69f	Paleobiology Database User Guide Version 2.0	2,541	876	989	676
6r18f8wn	11th North American Paleontological Conference Program with Abstracts	1,481	509	335	320	317
0q3634zc	<em>Nucella demouthae</em>, a new Late Miocene muricid gastropod from Northern California, U.S.A.	1,021	97	252	539	133
6jk04749	Two new plioplatecarpine mosasaurs (Mosasauridae; Plioplatecarpinae) of the genus <em>Ectenosaurus</em> from the Upper Cretaceous of North America	964	137	349	269	209
4j1195hk	A new fossil <em>Euspira</em>? (Mollusca: Gastropoda: Naticidae) from the Gubik Formation on the North Slope of Arctic Alaska	901	161	247	274	219
147611bv	Oldest known marine turtle? A new protostegid from the Lower Cretaceous of Colombia	735	130	202	202	201
4hv2z5nt	Newly described specimens of leptarctine mustelids expand their geographic range in the western United States	695	92	142	283	178
3c46d2rh	Paleogene marine bivalves of the deep-water Keasey Formation in Oregon, Part IA: The protobranchs (Nuculidae, Sareptidae, Pristiglomidae)	642	87	166	205	184
0xv324c8	Early Oligocene (Rupelian) fishes (Chondrichthyes, Osteichthyes) from the Ashley Formation (Cooper Group) of South Carolina, USA	633	99	166	194	174
6zt71586	First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway	576	87	151	168	170
9g04504b	A late Eocene wood assemblage from the Crooked River Basin, Oregon, USA	554	99	138	186	131
7848q4c8	The skull of <em>Postosuchus kirkpatricki</em> (Archosauria: Paracrocodyliformes) from the Upper Triassic of the United States	549	75	116	211	147
1dd6d638	Revision of northeast Pacific Paleogene cypraeoidean gastropods (Mollusca), including recognition of three new species: Implications for paleobiogeographic distribution and faunal turnover	546	109	136	169	132
6bb3q574	Late Silurian to earliest Devonian vertebrate biostratigraphy of the Birch Creek II section, Roberts Mountains, Nevada, U.S.A.	537	77	125	177	158
0670875m	Arcoid bivalve biodiversity during Eocene doubthouse cooling: Contrasting the active Cascadia Margin coldspot with the intracratonic Paris Basin hotspot	527	74	124	186	143
42d4n02d	Geology, microstratigraphy, and paleontology of the lacustrine Truckee Formation diatomite deposits near Hazen, Nevada, USA, with emphasis on fossil stickleback fish	524	95	130	151	148
01w536hs	New dinosauromorph specimens from Petrified Forest National Park and a global biostratigraphic review of Triassic dinosauromorph body fossils	512	96	120	158	138
47m7252q	Paleogene marine bivalves of the deep-water Keasey Formation in Oregon, Part II: The pteriomorphs	512	83	132	148	149
5d08883v	A methane seep from the deep-marine, late Eocene Keasey Formation, Rock Creek, Columbia County, Oregon	511	67	123	179	142
5rx20642	Caecidae (Mollusca: Gastropoda) from late Miocene exposures of the “Imperial” Formation in Riverside County, California	511	91	137	154	129
6dv597pp	New remains of middle Miocene equids from the Cajon Valley Formation, San Bernardino National Forest, San Bernardino County, California, USA	503	86	127	154	136
3zn190m3	New species of the deep-water bivalve genera Acesta (Limidae, Bivalvia, Mollusca) and a questionable Malletia (Malletiidae, Bivalvia, Mollusca) from the Eocene of southern California	496	116	118	145	117
03b3j605	First record of the chancelloriid Allonnia from the middle Cambrian Wheeler Formation (Drumian, Miaolingian) of western Utah	487	64	141	155	127
27q4j8sj	Washington State trigoniids (Bivalvia) from the conglomerate of Patterson Lake (Early Cretaceous)	481	68	134	168	111
9hs935kx	Fossil leaves, fruits and seeds of the Late Eocene Teater Road flora near Post, Oregon, USA	463	89	103	138	133
84g0595b	The giant, spike-toothed salmon, <em>Oncorhynchus rastrosus</em> and the “Proto-Tuolumne River” (early Pliocene) of Central California	453	71	107	141	134
6106g279	Nestling-sized hadrosaurine cranial material from the Hell Creek Formation of northeastern Montana, USA, with an analysis of cranial ontogeny in <em>Edmontosaurus annectens</em>	446	96	70	122	158
8z33r6cx	New theropod fossils from the Upper Triassic Dockum Group of Texas, USA, and a brief overview of the Dockum theropod diversity	413	70	106	128	109
0fh2f5n3	Late Eocene (Priabonian) elasmobranchs from the Dry Branch Formation (Barnwell Group) of Aiken County, South Carolina, USA	408	83	89	141	95
3k43832x	Pleistocene vertebrates of Silicon Valley (Santa Clara County, California)	371	72	90	130	79
4p77k5pw	Multiple geniculated types in a single inoceramid (Bivalvia) species: “Inoceramus” nebrascensis	371	70	87	119	95
4990r1hx	The dentition of the extinct megamouth shark, Megachasma applegatei (Lamniformes: Megachasmidae), from southern California, USA, based on geometric morphometrics	366	57	95	127	87
7v55c2tr	The fauna and chronostratigraphy of the middle Miocene Mascall type area, John Day Basin, Oregon, USA	366	70	82	125	89
8v08w2d6	The first <em>in situ</em> collection of a mosasaurine from the marine Breien Member of the Hell Creek Formation in south-central North Dakota, USA	366	54	86	123	103
7t50309r	Checklist of California Paleogene–Neogene marine Mollusca since Keen and Bentson (1944)	364	68	72	126	98
6g94r8jf	Paleocene chimaeroid fishes (Chondrichthyes: Holocephali) from the eastern United States, including two new species of <em>Callorhinchus</em>	363	79	80	107	97
2bk874nr	Late Cretaceous endemic shallow-marine gastropod genera of the northeast Pacific: biodiversity and faunal changes	351	44	185	86	36
1gm970pg	Miocene marine macropaleontology of the fourth bore Caldecott Tunnel excavation, Berkeley Hills, Oakland, California, USA	347	52	71	129	95
4ht19712	New insights into Late Triassic dinosauromorph-bearing assemblages from Texas using apomorphy-based identifications	344	54	74	122	94
603017mr	Paleogene marine bivalves of the deep-water Keasey Formation in Oregon, Part III: The heteroconchs	337	58	81	115	83
04q5f9cr	Cenozoic Marine Formations of Washington and Oregon: an annotated catalogue	332	45	67	147	73
9bw9c80g	Revision of Eocene warm-water cassid gastropods from coastal southwestern North America: implications for paleobiogeographic distribution and faunal-turnover	330	60	71	116	83
84d1304f	Using machine learning to classify extant apes and interpret the dental morphology of the chimpanzee-human last common ancestor	320	57	77	108	78
95q4q6jt	Ediacaran-Cambrian transition of the Southwestern USA—Field Trip of the North American Paleontological Convention, June 19–22, 2019	312	56	83	112	61
521585s4	The middle Miocene in southern California: Mammals, environments, and tectonics of the Barstow, Crowder, and Cajon Valley formations—Field Trip of the North American Paleontological Convention, June 22, 2019	310	67	58	100	85
8x7767f8	A new drepanosauromorph, <em>Ancistronychus paradoxus</em> n. gen. et sp., from the Chinle Formation of Petrified Forest National Park, Arizona, USA	310	37	70	106	97
9wq3j155	Late Cretaceous chimaeroids (Chondrichthyes: Holocephali) from Alabama, USA	303	53	73	96	81
0q11x9vs	<em>Leidyosuchus</em> (Crocodylia: Alligatoroidea) from the Upper Cretaceous Kaiparowits Formation (late Campanian) of Utah, USA	301	61	68	100	72
3km3d2wm	Western Association of Vertebrate Paleontology Annual Meeting: Program with Abstracts	297	44	61	106	86

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