UC Museum of Paleontology

eScholarship stats: History by Item for June through September, 2026

Item	Title	Total requests	2026-09	2026-08	2026-07	2026-06
9gg7n69f	Paleobiology Database User Guide Version 2.0	3,947	1,064	1,017	877	989
6r18f8wn	11th North American Paleontological Conference Program with Abstracts	1,343	186	306	516	335
6tm05630	Paleobiology Database User Guide Version 1.0	1,302	217	462	286	337
6jk04749	Two new plioplatecarpine mosasaurs (Mosasauridae; Plioplatecarpinae) of the genus <em>Ectenosaurus</em> from the Upper Cretaceous of North America	704	79	139	137	349
147611bv	Oldest known marine turtle? A new protostegid from the Lower Cretaceous of Colombia	683	140	209	132	202
2t31k34t	Western Association of Vertebrate Paleontology Annual Meeting Abstracts	598	250	348
4j1195hk	A new fossil <em>Euspira</em>? (Mollusca: Gastropoda: Naticidae) from the Gubik Formation on the North Slope of Arctic Alaska	581	65	105	164	247
0xv324c8	Early Oligocene (Rupelian) fishes (Chondrichthyes, Osteichthyes) from the Ashley Formation (Cooper Group) of South Carolina, USA	515	89	161	99	166
84g0595b	The giant, spike-toothed salmon, <em>Oncorhynchus rastrosus</em> and the “Proto-Tuolumne River” (early Pliocene) of Central California	502	156	167	72	107
01w536hs	New dinosauromorph specimens from Petrified Forest National Park and a global biostratigraphic review of Triassic dinosauromorph body fossils	494	135	143	96	120
0q3634zc	<em>Nucella demouthae</em>, a new Late Miocene muricid gastropod from Northern California, U.S.A.	491	63	79	97	252
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	490	100	156	116	118
7848q4c8	The skull of <em>Postosuchus kirkpatricki</em> (Archosauria: Paracrocodyliformes) from the Upper Triassic of the United States	443	106	146	75	116
3c46d2rh	Paleogene marine bivalves of the deep-water Keasey Formation in Oregon, Part IA: The protobranchs (Nuculidae, Sareptidae, Pristiglomidae)	441	82	106	87	166
6zt71586	First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway	428	73	116	88	151
42d4n02d	Geology, microstratigraphy, and paleontology of the lacustrine Truckee Formation diatomite deposits near Hazen, Nevada, USA, with emphasis on fossil stickleback fish	423	80	118	95	130
9hs935kx	Fossil leaves, fruits and seeds of the Late Eocene Teater Road flora near Post, Oregon, USA	417	70	155	89	103
0fh2f5n3	Late Eocene (Priabonian) elasmobranchs from the Dry Branch Formation (Barnwell Group) of Aiken County, South Carolina, USA	405	98	135	83	89
8z33r6cx	New theropod fossils from the Upper Triassic Dockum Group of Texas, USA, and a brief overview of the Dockum theropod diversity	400	107	117	70	106
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	397	101	156	54	86
1dd6d638	Revision of northeast Pacific Paleogene cypraeoidean gastropods (Mollusca), including recognition of three new species: Implications for paleobiogeographic distribution and faunal turnover	393	65	83	109	136
7zs962s4	Revised age of early short-faced bears (Tremarctinae, <em>Plionarctos</em>) in the fossil record	392	92	300
9g04504b	A late Eocene wood assemblage from the Crooked River Basin, Oregon, USA	392	51	103	100	138
6bb3q574	Late Silurian to earliest Devonian vertebrate biostratigraphy of the Birch Creek II section, Roberts Mountains, Nevada, U.S.A.	384	76	104	79	125
3k43832x	Pleistocene vertebrates of Silicon Valley (Santa Clara County, California)	367	99	106	72	90
4hv2z5nt	Newly described specimens of leptarctine mustelids expand their geographic range in the western United States	366	46	86	92	142
6dv597pp	New remains of middle Miocene equids from the Cajon Valley Formation, San Bernardino National Forest, San Bernardino County, California, USA	360	51	96	86	127
7t50309r	Checklist of California Paleogene–Neogene marine Mollusca since Keen and Bentson (1944)	351	60	151	68	72
95q4q6jt	Ediacaran-Cambrian transition of the Southwestern USA—Field Trip of the North American Paleontological Convention, June 19–22, 2019	351	70	127	71	83
2bk874nr	Late Cretaceous endemic shallow-marine gastropod genera of the northeast Pacific: biodiversity and faunal changes	341	34	78	44	185
5d08883v	A methane seep from the deep-marine, late Eocene Keasey Formation, Rock Creek, Columbia County, Oregon	341	48	103	67	123
6g94r8jf	Paleocene chimaeroid fishes (Chondrichthyes: Holocephali) from the eastern United States, including two new species of <em>Callorhinchus</em>	338	87	89	82	80
03b3j605	First record of the chancelloriid Allonnia from the middle Cambrian Wheeler Formation (Drumian, Miaolingian) of western Utah	337	51	80	65	141
4990r1hx	The dentition of the extinct megamouth shark, Megachasma applegatei (Lamniformes: Megachasmidae), from southern California, USA, based on geometric morphometrics	334	80	102	57	95
5rx20642	Caecidae (Mollusca: Gastropoda) from late Miocene exposures of the “Imperial” Formation in Riverside County, California	334	32	74	91	137
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>	334	85	83	96	70
27q4j8sj	Washington State trigoniids (Bivalvia) from the conglomerate of Patterson Lake (Early Cretaceous)	327	51	74	68	134
47m7252q	Paleogene marine bivalves of the deep-water Keasey Formation in Oregon, Part II: The pteriomorphs	327	45	67	83	132
0670875m	Arcoid bivalve biodiversity during Eocene doubthouse cooling: Contrasting the active Cascadia Margin coldspot with the intracratonic Paris Basin hotspot	325	39	88	74	124
7v55c2tr	The fauna and chronostratigraphy of the middle Miocene Mascall type area, John Day Basin, Oregon, USA	325	68	105	70	82
603017mr	Paleogene marine bivalves of the deep-water Keasey Formation in Oregon, Part III: The heteroconchs	311	62	109	59	81
04q5f9cr	Cenozoic Marine Formations of Washington and Oregon: an annotated catalogue	310	75	123	45	67
4ht19712	New insights into Late Triassic dinosauromorph-bearing assemblages from Texas using apomorphy-based identifications	308	68	112	54	74
0q11x9vs	<em>Leidyosuchus</em> (Crocodylia: Alligatoroidea) from the Upper Cretaceous Kaiparowits Formation (late Campanian) of Utah, USA	301	76	96	61	68
6sg3v4gs	The age of the Oso Member, Capistrano Formation, and a review of fossil crocodylians from California	301	60	100	67	74
8x7767f8	A new drepanosauromorph, <em>Ancistronychus paradoxus</em> n. gen. et sp., from the Chinle Formation of Petrified Forest National Park, Arizona, USA	295	86	102	37	70
20n1p06q	Middle Eocene trees of the Clarno Petrified Forest, John Day Fossil Beds National Monument, Oregon	288	74	102	41	71
6q35k21s	A new aetosaur (Archosauria: Pseudosuchia) from the upper Blue Mesa Member (Adamanian: Early–Mid Norian) of the Late Triassic Chinle Formation, northern Arizona, USA, and a review of the paratypothoracin <em>Tecovasuchus</em> across the southwestern USA	284	61	113	33	77
4p77k5pw	Multiple geniculated types in a single inoceramid (Bivalvia) species: “Inoceramus” nebrascensis	280	60	62	71	87
84d1304f	Using machine learning to classify extant apes and interpret the dental morphology of the chimpanzee-human last common ancestor	280	74	72	57	77

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