UC Museum of Paleontology

eScholarship stats: Breakdown by Item for March through June, 2026

Item	Title	Total requests	Download	View-only	%Dnld
6tm05630	Paleobiology Database User Guide Version 1.0	4,422	3,992	430	90.3%
9gg7n69f	Paleobiology Database User Guide Version 2.0	1,665	196	1,469	11.8%
6r18f8wn	11th North American Paleontological Conference Program with Abstracts	1,264	641	623	50.7%
0q3634zc	<em>Nucella demouthae</em>, a new Late Miocene muricid gastropod from Northern California, U.S.A.	1,052	467	585	44.4%
6jk04749	Two new plioplatecarpine mosasaurs (Mosasauridae; Plioplatecarpinae) of the genus <em>Ectenosaurus</em> from the Upper Cretaceous of North America	1,023	811	212	79.3%
4j1195hk	A new fossil <em>Euspira</em>? (Mollusca: Gastropoda: Naticidae) from the Gubik Formation on the North Slope of Arctic Alaska	945	701	244	74.2%
147611bv	Oldest known marine turtle? A new protostegid from the Lower Cretaceous of Colombia	748	229	519	30.6%
3c46d2rh	Paleogene marine bivalves of the deep-water Keasey Formation in Oregon, Part IA: The protobranchs (Nuculidae, Sareptidae, Pristiglomidae)	721	459	262	63.7%
4hv2z5nt	Newly described specimens of leptarctine mustelids expand their geographic range in the western United States	721	407	314	56.4%
1dd6d638	Revision of northeast Pacific Paleogene cypraeoidean gastropods (Mollusca), including recognition of three new species: Implications for paleobiogeographic distribution and faunal turnover	664	497	167	74.8%
0xv324c8	Early Oligocene (Rupelian) fishes (Chondrichthyes, Osteichthyes) from the Ashley Formation (Cooper Group) of South Carolina, USA	662	484	178	73.1%
6zt71586	First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway	618	454	164	73.5%
6bb3q574	Late Silurian to earliest Devonian vertebrate biostratigraphy of the Birch Creek II section, Roberts Mountains, Nevada, U.S.A.	597	403	194	67.5%
7848q4c8	The skull of <em>Postosuchus kirkpatricki</em> (Archosauria: Paracrocodyliformes) from the Upper Triassic of the United States	592	292	300	49.3%
9g04504b	A late Eocene wood assemblage from the Crooked River Basin, Oregon, USA	574	430	144	74.9%
42d4n02d	Geology, microstratigraphy, and paleontology of the lacustrine Truckee Formation diatomite deposits near Hazen, Nevada, USA, with emphasis on fossil stickleback fish	563	381	182	67.7%
5d08883v	A methane seep from the deep-marine, late Eocene Keasey Formation, Rock Creek, Columbia County, Oregon	559	462	97	82.6%
0670875m	Arcoid bivalve biodiversity during Eocene doubthouse cooling: Contrasting the active Cascadia Margin coldspot with the intracratonic Paris Basin hotspot	556	370	186	66.5%
47m7252q	Paleogene marine bivalves of the deep-water Keasey Formation in Oregon, Part II: The pteriomorphs	545	401	144	73.6%
03b3j605	First record of the chancelloriid Allonnia from the middle Cambrian Wheeler Formation (Drumian, Miaolingian) of western Utah	531	356	175	67.0%
5rx20642	Caecidae (Mollusca: Gastropoda) from late Miocene exposures of the “Imperial” Formation in Riverside County, California	530	363	167	68.5%
6dv597pp	New remains of middle Miocene equids from the Cajon Valley Formation, San Bernardino National Forest, San Bernardino County, California, USA	520	365	155	70.2%
01w536hs	New dinosauromorph specimens from Petrified Forest National Park and a global biostratigraphic review of Triassic dinosauromorph body fossils	517	276	241	53.4%
27q4j8sj	Washington State trigoniids (Bivalvia) from the conglomerate of Patterson Lake (Early Cretaceous)	512	351	161	68.6%
84g0595b	The giant, spike-toothed salmon, <em>Oncorhynchus rastrosus</em> and the “Proto-Tuolumne River” (early Pliocene) of Central California	505	197	308	39.0%
9hs935kx	Fossil leaves, fruits and seeds of the Late Eocene Teater Road flora near Post, Oregon, USA	471	225	246	47.8%
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	469	227	242	48.4%
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	418	179	239	42.8%
7t50309r	Checklist of California Paleogene–Neogene marine Mollusca since Keen and Bentson (1944)	408	183	225	44.9%
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>	405	171	234	42.2%
4990r1hx	The dentition of the extinct megamouth shark, Megachasma applegatei (Lamniformes: Megachasmidae), from southern California, USA, based on geometric morphometrics	404	126	278	31.2%
8z33r6cx	New theropod fossils from the Upper Triassic Dockum Group of Texas, USA, and a brief overview of the Dockum theropod diversity	400	228	172	57.0%
8x7767f8	A new drepanosauromorph, <em>Ancistronychus paradoxus</em> n. gen. et sp., from the Chinle Formation of Petrified Forest National Park, Arizona, USA	384	117	267	30.5%
2bk874nr	Late Cretaceous endemic shallow-marine gastropod genera of the northeast Pacific: biodiversity and faunal changes	378	76	302	20.1%
4p77k5pw	Multiple geniculated types in a single inoceramid (Bivalvia) species: “Inoceramus” nebrascensis	375	194	181	51.7%
0fh2f5n3	Late Eocene (Priabonian) elasmobranchs from the Dry Branch Formation (Barnwell Group) of Aiken County, South Carolina, USA	371	236	135	63.6%
04q5f9cr	Cenozoic Marine Formations of Washington and Oregon: an annotated catalogue	366	156	210	42.6%
3k43832x	Pleistocene vertebrates of Silicon Valley (Santa Clara County, California)	365	165	200	45.2%
1gm970pg	Miocene marine macropaleontology of the fourth bore Caldecott Tunnel excavation, Berkeley Hills, Oakland, California, USA	362	158	204	43.6%
7v55c2tr	The fauna and chronostratigraphy of the middle Miocene Mascall type area, John Day Basin, Oregon, USA	355	142	213	40.0%
603017mr	Paleogene marine bivalves of the deep-water Keasey Formation in Oregon, Part III: The heteroconchs	353	127	226	36.0%
6g94r8jf	Paleocene chimaeroid fishes (Chondrichthyes: Holocephali) from the eastern United States, including two new species of <em>Callorhinchus</em>	349	206	143	59.0%
4ht19712	New insights into Late Triassic dinosauromorph-bearing assemblages from Texas using apomorphy-based identifications	343	165	178	48.1%
9bw9c80g	Revision of Eocene warm-water cassid gastropods from coastal southwestern North America: implications for paleobiogeographic distribution and faunal-turnover	339	216	123	63.7%
84d1304f	Using machine learning to classify extant apes and interpret the dental morphology of the chimpanzee-human last common ancestor	329	87	242	26.4%
8vm8c6wc	Temporalis attachment area as a proxy for feeding ecology in toothed whales (Artiodactyla: Odontoceti)	327	187	140	57.2%
4x65w110	2025 Western Association of Vertebrate Paleontology Annual Meeting Abstracts	313	123	190	39.3%
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	312	85	227	27.2%
2vf0k82q	A fossil giant tortoise from the Mehrten Formation of Northern California	311	94	217	30.2%
1109w01k	New mammalian herbivore records from the Early to Middle Miocene Castilletes fauna, Colombia and late Neogene environmental change in northern South America	308	91	217	29.5%

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